1
|
Roux A, Alsalman Z, Jiang T, Mulatier JC, Pitrat D, Dumont E, Riobé F, Gillet N, Girard E, Maury O. Influence of Chemical Modifications of the Crystallophore on Protein Nucleating Properties and Supramolecular Interactions Network. Chemistry 2024; 30:e202400900. [PMID: 38738452 DOI: 10.1002/chem.202400900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 05/07/2024] [Accepted: 05/08/2024] [Indexed: 05/14/2024]
Abstract
Crystallophores are lanthanide complexes that have demonstrated outstanding induction of crystallization for various proteins. This article explores the effect of tailored modifications of the crystallophore first generation and their impact on the nucleating properties and protein crystal structures. Through high-throughput crystallization experiments and dataset analysis, we evaluated the effectiveness of these variants, in comparison to the first crystallophore generation G1. In particular, the V1 variant, featuring a propanol pendant arm, demonstrated the ability to produce new crystallization conditions for the proteins tested (hen-egg white lysozyme, proteinase K and thaumatin). Structural analysis performed in the case of hen egg-white lysozyme along with Molecular Dynamics simulations, highlights V1's unique behavior, taking advantage of the flexibility of its propanol arm to explore different protein surfaces and form versatile supramolecular interactions.
Collapse
Affiliation(s)
- Amandine Roux
- Univ. Lyon, École Normale Supérieure de Lyon, CNRS UMR 5182, Laboratoire de Chimie, 46 allée d'Italie, 69007, Lyon, France
- Polyvalan SAS, Lyon, France
| | - Zaynab Alsalman
- Univ Grenoble Alpes, CEA, CNRS, IBS, F-38000, Grenoble, France
| | - Tao Jiang
- Univ. Lyon, École Normale Supérieure de Lyon, CNRS UMR 5182, Laboratoire de Chimie, 46 allée d'Italie, 69007, Lyon, France
| | - Jean-Christophe Mulatier
- Univ. Lyon, École Normale Supérieure de Lyon, CNRS UMR 5182, Laboratoire de Chimie, 46 allée d'Italie, 69007, Lyon, France
| | - Delphine Pitrat
- Univ. Lyon, École Normale Supérieure de Lyon, CNRS UMR 5182, Laboratoire de Chimie, 46 allée d'Italie, 69007, Lyon, France
| | - Elise Dumont
- Univ. Côte d'Azur, CNRS, Institut de Chimie de Nice, UMR 7272, 06108, Nice, France
- Institut Universitaire de France, 5 rue Descartes, 75005, Paris, France
| | - François Riobé
- Univ. Lyon, École Normale Supérieure de Lyon, CNRS UMR 5182, Laboratoire de Chimie, 46 allée d'Italie, 69007, Lyon, France
- Univ Bordeaux, Bordeaux INP, CNRS, Institut de Chimie de la Matière Condensée de Bordeaux, 33608, Pessac, France
| | - Natacha Gillet
- Univ. Lyon, École Normale Supérieure de Lyon, CNRS UMR 5182, Laboratoire de Chimie, 46 allée d'Italie, 69007, Lyon, France
| | - Eric Girard
- Univ Grenoble Alpes, CEA, CNRS, IBS, F-38000, Grenoble, France
| | - Olivier Maury
- Univ. Lyon, École Normale Supérieure de Lyon, CNRS UMR 5182, Laboratoire de Chimie, 46 allée d'Italie, 69007, Lyon, France
| |
Collapse
|
2
|
Rao S, Sadybekov A, DeWitt DC, Lipka J, Katritch V, Herring BE. Detection of autism spectrum disorder-related pathogenic trio variants by a novel structure-based approach. Mol Autism 2024; 15:12. [PMID: 38566250 PMCID: PMC10988830 DOI: 10.1186/s13229-024-00590-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 02/16/2024] [Indexed: 04/04/2024] Open
Abstract
BACKGROUND Glutamatergic synapse dysfunction is believed to underlie the development of Autism Spectrum Disorder (ASD) and Intellectual Disability (ID) in many individuals. However, identification of genetic markers that contribute to synaptic dysfunction in these individuals is notoriously difficult. Based on genomic analysis, structural modeling, and functional data, we recently established the involvement of the TRIO-RAC1 pathway in ASD and ID. Furthermore, we identified a pathological de novo missense mutation hotspot in TRIO's GEF1 domain. ASD/ID-related missense mutations within this domain compromise glutamatergic synapse function and likely contribute to the development of ASD/ID. The number of ASD/ID cases with mutations identified within TRIO's GEF1 domain is increasing. However, tools for accurately predicting whether such mutations are detrimental to protein function are lacking. METHODS Here we deployed advanced protein structural modeling techniques to predict potential de novo pathogenic and benign mutations within TRIO's GEF1 domain. Mutant TRIO-9 constructs were generated and expressed in CA1 pyramidal neurons of organotypic cultured hippocampal slices. AMPA receptor-mediated postsynaptic currents were examined in these neurons using dual whole-cell patch clamp electrophysiology. We also validated these findings using orthogonal co-immunoprecipitation and fluorescence lifetime imaging (FLIM-FRET) experiments to assay TRIO mutant overexpression effects on TRIO-RAC1 binding and on RAC1 activity in HEK293/T cells. RESULTS Missense mutations in TRIO's GEF1 domain that were predicted to disrupt TRIO-RAC1 binding or stability were tested experimentally and found to greatly impair TRIO-9's influence on glutamatergic synapse function. In contrast, missense mutations in TRIO's GEF1 domain that were predicted to have minimal effect on TRIO-RAC1 binding or stability did not impair TRIO-9's influence on glutamatergic synapse function in our experimental assays. In orthogonal assays, we find most of the mutations predicted to disrupt binding display loss of function but mutants predicted to disrupt stability do not reflect our results from neuronal electrophysiological data. LIMITATIONS We present a method to predict missense mutations in TRIO's GEF1 domain that may compromise TRIO function and test for effects in a limited number of assays. Possible limitations arising from the model systems employed here can be addressed in future studies. Our method does not provide evidence for whether these mutations confer ASD/ID risk or the likelihood that such mutations will result in the development of ASD/ID. CONCLUSIONS Here we show that a combination of structure-based computational predictions and experimental validation can be employed to reliably predict whether missense mutations in the human TRIO gene impede TRIO protein function and compromise TRIO's role in glutamatergic synapse regulation. With the growing accessibility of genome sequencing, the use of such tools in the accurate identification of pathological mutations will be instrumental in diagnostics of ASD/ID.
Collapse
Affiliation(s)
- Sadhna Rao
- Department of Biological Sciences, Neurobiology Section, Dornsife College of Letters, Arts and Sciences, University of Southern California, Los Angeles, CA, 90089, USA.
- Neuroscience Graduate Program, University of Southern California, Los Angeles, CA, 90089, USA.
| | - Anastasiia Sadybekov
- Quantitative and Computational Biology, University of Southern California, Los Angeles, CA, 90089, USA
- Department of Chemistry, University of Southern California, Los Angeles, CA, 90089, USA
| | - David C DeWitt
- Department of Pathology, Genentech, Inc., South San Francisco, CA, 94080, USA
| | - Joanna Lipka
- Department of Neuroscience, Genentech, Inc., South San Francisco, CA, 94080, USA
| | - Vsevolod Katritch
- Quantitative and Computational Biology, University of Southern California, Los Angeles, CA, 90089, USA.
- Department of Chemistry, University of Southern California, Los Angeles, CA, 90089, USA.
| | - Bruce E Herring
- Department of Biological Sciences, Neurobiology Section, Dornsife College of Letters, Arts and Sciences, University of Southern California, Los Angeles, CA, 90089, USA.
- Neuroscience Graduate Program, University of Southern California, Los Angeles, CA, 90089, USA.
| |
Collapse
|
3
|
Miller JE, Agdanowski MP, Dolinsky JL, Sawaya MR, Cascio D, Rodriguez JA, Yeates TO. AlphaFold-assisted structure determination of a bacterial protein of unknown function using X-ray and electron crystallography. Acta Crystallogr D Struct Biol 2024; 80:270-278. [PMID: 38451205 PMCID: PMC10994174 DOI: 10.1107/s205979832400072x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 01/19/2024] [Indexed: 03/08/2024] Open
Abstract
Macromolecular crystallography generally requires the recovery of missing phase information from diffraction data to reconstruct an electron-density map of the crystallized molecule. Most recent structures have been solved using molecular replacement as a phasing method, requiring an a priori structure that is closely related to the target protein to serve as a search model; when no such search model exists, molecular replacement is not possible. New advances in computational machine-learning methods, however, have resulted in major advances in protein structure predictions from sequence information. Methods that generate predicted structural models of sufficient accuracy provide a powerful approach to molecular replacement. Taking advantage of these advances, AlphaFold predictions were applied to enable structure determination of a bacterial protein of unknown function (UniProtKB Q63NT7, NCBI locus BPSS0212) based on diffraction data that had evaded phasing attempts using MIR and anomalous scattering methods. Using both X-ray and micro-electron (microED) diffraction data, it was possible to solve the structure of the main fragment of the protein using a predicted model of that domain as a starting point. The use of predicted structural models importantly expands the promise of electron diffraction, where structure determination relies critically on molecular replacement.
Collapse
Affiliation(s)
- Justin E. Miller
- Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Matthew P. Agdanowski
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Joshua L. Dolinsky
- Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Michael R. Sawaya
- Institute for Genomics and Proteomics, UCLA–DOE, Los Angeles, CA 90095, USA
| | - Duilio Cascio
- Institute for Genomics and Proteomics, UCLA–DOE, Los Angeles, CA 90095, USA
| | - Jose A. Rodriguez
- Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
- Institute for Genomics and Proteomics, UCLA–DOE, Los Angeles, CA 90095, USA
| | - Todd O. Yeates
- Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
- Institute for Genomics and Proteomics, UCLA–DOE, Los Angeles, CA 90095, USA
| |
Collapse
|
4
|
Perrett S, Fadini A, Hutchison CDM, Bhattacharya S, Morrison C, Turkot O, Jakobsen MB, Größler M, Licón-Saláiz J, Griese F, Flewett S, Valerio J, Schulz J, Biednov M, Jiang Y, Han H, Yousef H, Khakhulin D, Milne C, Barty A, van Thor JJ. Kilohertz droplet-on-demand serial femtosecond crystallography at the European XFEL station FXE. STRUCTURAL DYNAMICS (MELVILLE, N.Y.) 2024; 11:024310. [PMID: 38638699 PMCID: PMC11026113 DOI: 10.1063/4.0000248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 04/03/2024] [Indexed: 04/20/2024]
Abstract
X-ray Free Electron Lasers (XFELs) allow the collection of high-quality serial femtosecond crystallography data. The next generation of megahertz superconducting FELs promises to drastically reduce data collection times, enabling the capture of more structures with higher signal-to-noise ratios and facilitating more complex experiments. Currently, gas dynamic virtual nozzles (GDVNs) stand as the sole delivery method capable of best utilizing the repetition rate of megahertz sources for crystallography. However, their substantial sample consumption renders their use impractical for many protein targets in serial crystallography experiments. Here, we present a novel application of a droplet-on-demand injection method, which allowed operation at 47 kHz at the European XFEL (EuXFEL) by tailoring a multi-droplet injection scheme for each macro-pulse. We demonstrate a collection rate of 150 000 indexed patterns per hour. We show that the performance and effective data collection rate are comparable to GDVN, with a sample consumption reduction of two orders of magnitude. We present lysozyme crystallographic data using the Large Pixel Detector at the femtosecond x-ray experiment endstation. Significant improvement of the crystallographic statistics was made by correcting for a systematic drift of the photon energy in the EuXFEL macro-pulse train, which was characterized from indexing the individual frames in the pulse train. This is the highest resolution protein structure collected and reported at the EuXFEL at 1.38 Å resolution.
Collapse
Affiliation(s)
- Samuel Perrett
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, London SW7 2AZ, United Kingdom
| | - Alisia Fadini
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, London SW7 2AZ, United Kingdom
| | | | - Sayantan Bhattacharya
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, London SW7 2AZ, United Kingdom
| | - Cade Morrison
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, London SW7 2AZ, United Kingdom
| | | | - Mads Bregenholt Jakobsen
- Center for Data and Computing in Natural Sciences (CDCS), Notkestrasse 10, D-22607 Hamburg, Germany
| | - Michael Größler
- Center for Data and Computing in Natural Sciences (CDCS), Notkestrasse 10, D-22607 Hamburg, Germany
| | - José Licón-Saláiz
- Center for Data and Computing in Natural Sciences (CDCS), Notkestrasse 10, D-22607 Hamburg, Germany
| | | | - Samuel Flewett
- Center for Data and Computing in Natural Sciences (CDCS), Notkestrasse 10, D-22607 Hamburg, Germany
| | - Joana Valerio
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | | | | | - Yifeng Jiang
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Huijong Han
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Hazem Yousef
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | | | | | - Anton Barty
- Center for Data and Computing in Natural Sciences (CDCS), Notkestrasse 10, D-22607 Hamburg, Germany
| | - Jasper J. van Thor
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, London SW7 2AZ, United Kingdom
| |
Collapse
|
5
|
Paulson L, Narayanasamy SR, Shelby ML, Frank M, Trebbin M. Advanced manufacturing provides tailor-made solutions for crystallography with x-ray free-electron lasers. STRUCTURAL DYNAMICS (MELVILLE, N.Y.) 2024; 11:011101. [PMID: 38389979 PMCID: PMC10883715 DOI: 10.1063/4.0000229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 01/15/2024] [Indexed: 02/24/2024]
Abstract
Serial crystallography at large facilities, such as x-ray free-electron lasers and synchrotrons, evolved as a powerful method for the high-resolution structural investigation of proteins that are critical for human health, thus advancing drug discovery and novel therapies. However, a critical barrier to successful serial crystallography experiments lies in the efficient handling of the protein microcrystals and solutions at microscales. Microfluidics are the obvious approach for any high-throughput, nano-to-microliter sample handling, that also requires design flexibility and rapid prototyping to deal with the variable shapes, sizes, and density of crystals. Here, we discuss recent advances in polymer 3D printing for microfluidics-based serial crystallography research and present a demonstration of emerging, large-scale, nano-3D printing approaches leading into the future of 3D sample environment and delivery device fabrication from liquid jet gas-dynamic virtual nozzles devices to fixed-target sample environment technology.
Collapse
Affiliation(s)
- Lars Paulson
- Department of Chemistry & Research and Education in Energy, Environment and Water (RENEW), The State University of New York at Buffalo, Buffalo, New York 14260, USA
| | - Sankar Raju Narayanasamy
- Biosciences and Biotechnology Division, Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - Megan L. Shelby
- Biosciences and Biotechnology Division, Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | | | | |
Collapse
|
6
|
Xie J, Liu J, Zhang C, Chen X, Huai P, Zheng J, Zhang X. Weakly supervised learning for pattern classification in serial femtosecond crystallography. OPTICS EXPRESS 2023; 31:32909-32924. [PMID: 37859083 DOI: 10.1364/oe.492311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 07/30/2023] [Indexed: 10/21/2023]
Abstract
Serial femtosecond crystallography at X-ray free electron laser facilities opens a new era for the determination of crystal structure. However, the data processing of those experiments is facing unprecedented challenge, because the total number of diffraction patterns needed to determinate a high-resolution structure is huge. Machine learning methods are very likely to play important roles in dealing with such a large volume of data. Convolutional neural networks have made a great success in the field of pattern classification, however, training of the networks need very large datasets with labels. This heavy dependence on labeled datasets will seriously restrict the application of networks, because it is very costly to annotate a large number of diffraction patterns. In this article we present our job on the classification of diffraction pattern by weakly supervised algorithms, with the aim of reducing as much as possible the size of the labeled dataset required for training. Our result shows that weakly supervised methods can significantly reduce the need for the number of labeled patterns while achieving comparable accuracy to fully supervised methods.
Collapse
|
7
|
Gu KK, Liu Z, Narayanasamy SR, Shelby ML, Chan N, Coleman MA, Frank M, Kuhl TL. All polymer microfluidic chips-A fixed target sample delivery workhorse for serial crystallography. BIOMICROFLUIDICS 2023; 17:051302. [PMID: 37840537 PMCID: PMC10576627 DOI: 10.1063/5.0167164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 09/27/2023] [Indexed: 10/17/2023]
Abstract
The development of x-ray free electron laser (XFEL) light sources and serial crystallography methodologies has led to a revolution in protein crystallography, enabling the determination of previously unobtainable protein structures and near-atomic resolution of otherwise poorly diffracting protein crystals. However, to utilize XFEL sources efficiently demands the continuous, rapid delivery of a large number of difficult-to-handle microcrystals to the x-ray beam. A recently developed fixed-target system, in which crystals of interest are enclosed within a sample holder, which is rastered through the x-ray beam, is discussed in detail in this Perspective. The fixed target is easy to use, maintains sample hydration, and can be readily modified to allow a broad range of sample types and different beamline requirements. Recent innovations demonstrate the potential of such microfluidic-based fixed targets to be an all-around "workhorse" for serial crystallography measurements. This Perspective will summarize recent advancements in microfluidic fixed targets for serial crystallography, examine needs for future development, and guide users in designing, choosing, and utilizing a fixed-target sample delivery device for their system.
Collapse
Affiliation(s)
- Kevin K. Gu
- Department of Chemical Engineering, University of California at Davis, Davis, California 95616, USA
| | - Zhongrui Liu
- Department of Chemical Engineering, University of California at Davis, Davis, California 95616, USA
| | - Sankar Raju Narayanasamy
- Biosciences and Biotechnology Division, Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - Megan L. Shelby
- Biosciences and Biotechnology Division, Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - Nicholas Chan
- Department of Chemical Engineering, University of California at Davis, Davis, California 95616, USA
| | | | | | - Tonya L. Kuhl
- Department of Chemical Engineering, University of California at Davis, Davis, California 95616, USA
| |
Collapse
|
8
|
Sonker M, Doppler D, Egatz-Gomez A, Zaare S, Rabbani MT, Manna A, Cruz Villarreal J, Nelson G, Ketawala GK, Karpos K, Alvarez RC, Nazari R, Thifault D, Jernigan R, Oberthür D, Han H, Sierra R, Hunter MS, Batyuk A, Kupitz CJ, Sublett RE, Poitevin F, Lisova S, Mariani V, Tolstikova A, Boutet S, Messerschmidt M, Meza-Aguilar JD, Fromme R, Martin-Garcia JM, Botha S, Fromme P, Grant TD, Kirian RA, Ros A. Electrically stimulated droplet injector for reduced sample consumption in serial crystallography. BIOPHYSICAL REPORTS 2022; 2:100081. [PMID: 36425668 PMCID: PMC9680787 DOI: 10.1016/j.bpr.2022.100081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 09/27/2022] [Indexed: 06/16/2023]
Abstract
With advances in X-ray free-electron lasers (XFELs), serial femtosecond crystallography (SFX) has enabled the static and dynamic structure determination for challenging proteins such as membrane protein complexes. In SFX with XFELs, the crystals are typically destroyed after interacting with a single XFEL pulse. Therefore, thousands of new crystals must be sequentially introduced into the X-ray beam to collect full data sets. Because of the serial nature of any SFX experiment, up to 99% of the sample delivered to the X-ray beam during its "off-time" between X-ray pulses is wasted due to the intrinsic pulsed nature of all current XFELs. To solve this major problem of large and often limiting sample consumption, we report on improvements of a revolutionary sample-saving method that is compatible with all current XFELs. We previously reported 3D-printed injection devices coupled with gas dynamic virtual nozzles (GDVNs) capable of generating samples containing droplets segmented by an immiscible oil phase for jetting crystal-laden droplets into the path of an XFEL. Here, we have further improved the device design by including metal electrodes inducing electrowetting effects for improved control over droplet generation frequency to stimulate the droplet release to matching the XFEL repetition rate by employing an electrical feedback mechanism. We report the improvements in this electrically triggered segmented flow approach for sample conservation in comparison with a continuous GDVN injection using the microcrystals of lysozyme and 3-deoxy-D-manno-octulosonate 8-phosphate synthase and report the segmented flow approach for sample injection applied at the Macromolecular Femtosecond Crystallography instrument at the Linear Coherent Light Source for the first time.
Collapse
Affiliation(s)
- Mukul Sonker
- School of Molecular Sciences, Arizona State University, Tempe, Arizona
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona
| | - Diandra Doppler
- School of Molecular Sciences, Arizona State University, Tempe, Arizona
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona
| | - Ana Egatz-Gomez
- School of Molecular Sciences, Arizona State University, Tempe, Arizona
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona
| | - Sahba Zaare
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona
- Department of Physics, Arizona State University, Tempe, Arizona
| | - Mohammad T. Rabbani
- School of Molecular Sciences, Arizona State University, Tempe, Arizona
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona
| | - Abhik Manna
- School of Molecular Sciences, Arizona State University, Tempe, Arizona
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona
| | - Jorvani Cruz Villarreal
- School of Molecular Sciences, Arizona State University, Tempe, Arizona
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona
| | - Garrett Nelson
- Department of Physics, Arizona State University, Tempe, Arizona
| | - Gihan K. Ketawala
- School of Molecular Sciences, Arizona State University, Tempe, Arizona
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona
| | - Konstantinos Karpos
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona
- Department of Physics, Arizona State University, Tempe, Arizona
| | - Roberto C. Alvarez
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona
- Department of Physics, Arizona State University, Tempe, Arizona
| | - Reza Nazari
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona
- Department of Physics, Arizona State University, Tempe, Arizona
| | - Darren Thifault
- School of Molecular Sciences, Arizona State University, Tempe, Arizona
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona
| | - Rebecca Jernigan
- School of Molecular Sciences, Arizona State University, Tempe, Arizona
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona
| | - Dominik Oberthür
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Hamburg, Germany
| | | | - Raymond Sierra
- Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, Menlo Park, California
| | - Mark S. Hunter
- Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, Menlo Park, California
| | - Alexander Batyuk
- Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, Menlo Park, California
| | - Christopher J. Kupitz
- Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, Menlo Park, California
| | - Robert E. Sublett
- Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, Menlo Park, California
| | - Frederic Poitevin
- Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, Menlo Park, California
| | - Stella Lisova
- Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, Menlo Park, California
| | - Valerio Mariani
- Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, Menlo Park, California
| | - Alexandra Tolstikova
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Hamburg, Germany
| | - Sebastien Boutet
- Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, Menlo Park, California
| | - Marc Messerschmidt
- School of Molecular Sciences, Arizona State University, Tempe, Arizona
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona
| | - J. Domingo Meza-Aguilar
- School of Molecular Sciences, Arizona State University, Tempe, Arizona
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona
| | - Raimund Fromme
- School of Molecular Sciences, Arizona State University, Tempe, Arizona
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona
| | - Jose M. Martin-Garcia
- Institute Physical-Chemistry Rocasolano, Spanish National Research Council, Madrid, Spain
| | - Sabine Botha
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona
- Department of Physics, Arizona State University, Tempe, Arizona
| | - Petra Fromme
- School of Molecular Sciences, Arizona State University, Tempe, Arizona
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona
| | - Thomas D. Grant
- Department of Structural Biology, Jacobs School of Medicine and Biomedical Sciences, SUNY University at Buffalo, Buffalo, New York
| | - Richard A. Kirian
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona
- Department of Physics, Arizona State University, Tempe, Arizona
| | - Alexandra Ros
- School of Molecular Sciences, Arizona State University, Tempe, Arizona
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona
| |
Collapse
|
9
|
Smith N, Wilson MA. Understanding Cysteine Chemistry Using Conventional and Serial X-Ray Protein Crystallography. CRYSTALS 2022; 12:1671. [PMID: 36685087 PMCID: PMC9850494 DOI: 10.3390/cryst12111671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Proteins that use cysteine residues for catalysis or regulation are widely distributed and intensively studied, with many biomedically important examples. Enzymes where cysteine is a catalytic nucleophile typically generate covalent catalytic intermediates whose structures are important for understanding mechanism and for designing targeted inhibitors. The formation of catalytic intermediates can change enzyme conformational dynamics, sometimes activating protein motions that are important for catalytic turnover. However, these transiently populated intermediate species have been challenging to structurally characterize using traditional crystallographic approaches. This review describes the use and promise of new time-resolved serial crystallographic methods to study cysteine-dependent enzymes, with a focus on the main (Mpro) and papain-like (PLpro) cysteine proteases of SARS-CoV-2 as well as other examples. We review features of cysteine chemistry that are relevant for the design and execution of time-resolved serial crystallography experiments. In addition, we discuss emerging X-ray techniques such as time-resolved sulfur X-ray spectroscopy that may be able to detect changes in sulfur charge state and covalency during catalysis or regulatory modification. In summary, cysteine-dependent enzymes have features that make them especially attractive targets for new time-resolved serial crystallography approaches, which can reveal both changes to enzyme structure and dynamics during catalysis in crystalline samples.
Collapse
|
10
|
Barends TR, Stauch B, Cherezov V, Schlichting I. Serial femtosecond crystallography. NATURE REVIEWS. METHODS PRIMERS 2022; 2:59. [PMID: 36643971 PMCID: PMC9833121 DOI: 10.1038/s43586-022-00141-7] [Citation(s) in RCA: 40] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
With the advent of X-ray Free Electron Lasers (XFELs), new, high-throughput serial crystallography techniques for macromolecular structure determination have emerged. Serial femtosecond crystallography (SFX) and related methods provide possibilities beyond canonical, single-crystal rotation crystallography by mitigating radiation damage and allowing time-resolved studies with unprecedented temporal resolution. This primer aims to assist structural biology groups with little or no experience in serial crystallography planning and carrying out a successful SFX experiment. It discusses the background of serial crystallography and its possibilities. Microcrystal growth and characterization methods are discussed, alongside techniques for sample delivery and data processing. Moreover, it gives practical tips for preparing an experiment, what to consider and do during a beamtime and how to conduct the final data analysis. Finally, the Primer looks at various applications of SFX, including structure determination of membrane proteins, investigation of radiation damage-prone systems and time-resolved studies.
Collapse
Affiliation(s)
- Thomas R.M. Barends
- Department for Biological Mechanisms, Max Planck Institute for Medical Research, Heidelberg, Germany
| | - Benjamin Stauch
- Department of Chemistry, The Bridge Institute, University of Southern California, Los Angeles, CA, USA
| | - Vadim Cherezov
- Department of Chemistry, The Bridge Institute, University of Southern California, Los Angeles, CA, USA
| | - Ilme Schlichting
- Department for Biological Mechanisms, Max Planck Institute for Medical Research, Heidelberg, Germany,
| |
Collapse
|
11
|
Nam KH. Hit and Indexing Rate in Serial Crystallography: Incomparable Statistics. Front Mol Biosci 2022; 9:858815. [PMID: 35402509 PMCID: PMC8990040 DOI: 10.3389/fmolb.2022.858815] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 01/31/2022] [Indexed: 11/13/2022] Open
Affiliation(s)
- Ki Hyun Nam
- Department of Life Science, Pohang University of Science and Technology, Pohang, South Korea
- POSTECH Biotech Center, Pohang University of Science and Technology, Pohang, South Korea
- *Correspondence: Ki Hyun Nam,
| |
Collapse
|
12
|
Chaussavoine I, Isabet T, Lener R, Montaville P, Vasireddi R, Chavas LMG. Implementation of wedged-serial protein crystallography at PROXIMA-1. JOURNAL OF SYNCHROTRON RADIATION 2022; 29:439-446. [PMID: 35254307 PMCID: PMC8900848 DOI: 10.1107/s1600577521013242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 12/14/2021] [Indexed: 06/14/2023]
Abstract
An approach for serial crystallography experiments based on wedged-data collection is described. This is an alternative method for recording in situ X-ray diffraction data on crystalline samples efficiently loaded in an X-ray compatible microfluidic chip. Proper handling of the microfluidic chip places crystalline samples at geometrically known positions with respect to the focused X-ray interaction area for serial data collection of small wedges. The integration of this strategy takes advantage of the greatly modular sample environment available on the endstation, which allows access to both in situ and more classical cryo-crystallography with minimum time loss. The method represents another optional data collection approach that adds up to the already large set of methods made available to users. Coupled with the advances in processing serial crystallography data, the wedged-data collection strategy proves highly efficient in minimizing the amount of required sample crystals for recording a complete dataset. From the advances in microfluidic technology presented here, high-throughput room-temperature crystallography experiments may become routine and should be easily extended to industrial use.
Collapse
Affiliation(s)
| | | | - Robin Lener
- Synchrotron SOLEIL, 91192 Gif-sur-Yvette, France
| | | | | | | |
Collapse
|
13
|
Processing of Multicrystal Diffraction Patterns in Macromolecular Crystallography Using Serial Crystallography Programs. CRYSTALS 2022. [DOI: 10.3390/cryst12010103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Cryocrystallography is a widely used method for determining the crystal structure of macromolecules. This technique uses a cryoenvironment, which significantly reduces the radiation damage to the crystals and has the advantage of requiring only one crystal for structural determination. In standard cryocrystallography, a single crystal is used for collecting diffraction data, which include single-crystal diffraction patterns. However, the X-ray data recorded often may contain diffraction patterns from several crystals. The indexing of multicrystal diffraction patterns in cryocrystallography requires more precise data processing techniques and is therefore time consuming. Here, an approach for processing multicrystal diffraction data using a serial crystallography program is introduced that allows for the integration of multicrystal diffraction patterns from a single image. Multicrystal diffraction data were collected from lysozyme crystals and processed using the serial crystallography program CrystFEL. From 360 images containing multicrystal diffraction patterns, 1138 and 691 crystal lattices could be obtained using the XGANDALF and MOSFLM indexing algorithms, respectively. Using this indexed multi-lattice information, the crystal structure of the lysozyme could be determined successfully at a resolution of 1.9 Å. Therefore, the proposed approach, which is based on serial crystallography, is suitable for processing multicrystal diffraction data in cryocrystallography.
Collapse
|
14
|
Pan D, Oyama R, Sato T, Nakane T, Mizunuma R, Matsuoka K, Joti Y, Tono K, Nango E, Iwata S, Nakatsu T, Kato H. Crystal structure of CmABCB1 multi-drug exporter in lipidic mesophase revealed by LCP-SFX. IUCRJ 2022; 9:134-145. [PMID: 35059217 PMCID: PMC8733880 DOI: 10.1107/s2052252521011611] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 11/03/2021] [Indexed: 06/14/2023]
Abstract
CmABCB1 is a Cyanidioschyzon merolae homolog of human ABCB1, a well known ATP-binding cassette (ABC) transporter responsible for multi-drug resistance in various cancers. Three-dimensional structures of ABCB1 homologs have revealed the snapshots of inward- and outward-facing states of the transporters in action. However, sufficient information to establish the sequential movements of the open-close cycles of the alternating-access model is still lacking. Serial femtosecond crystallography (SFX) using X-ray free-electron lasers has proven its worth in determining novel structures and recording sequential conformational changes of proteins at room temperature, especially for medically important membrane proteins, but it has never been applied to ABC transporters. In this study, 7.7 mono-acyl-glycerol with cholesterol as the host lipid was used and obtained well diffracting microcrystals of the 130 kDa CmABCB1 dimer. Successful SFX experiments were performed by adjusting the viscosity of the crystal suspension of the sponge phase with hy-droxy-propyl methyl-cellulose and using the high-viscosity sample injector for data collection at the SACLA beamline. An outward-facing structure of CmABCB1 at a maximum resolution of 2.22 Å is reported, determined by SFX experiments with crystals formed in the lipidic cubic phase (LCP-SFX), which has never been applied to ABC transporters. In the type I crystal, CmABCB1 dimers interact with adjacent molecules via not only the nucleotide-binding domains but also the transmembrane domains (TMDs); such an interaction was not observed in the previous type II crystal. Although most parts of the structure are similar to those in the previous type II structure, the substrate-exit region of the TMD adopts a different configuration in the type I structure. This difference between the two types of structures reflects the flexibility of the substrate-exit region of CmABCB1, which might be essential for the smooth release of various substrates from the transporter.
Collapse
Affiliation(s)
- Dongqing Pan
- Department of Structural Biology, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Yoshida Shimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Ryo Oyama
- Department of Structural Biology, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Yoshida Shimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Tomomi Sato
- Department of Structural Biology, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Yoshida Shimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Takanori Nakane
- Department of Biological Science, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Ryo Mizunuma
- Department of Structural Biology, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Yoshida Shimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Keita Matsuoka
- Department of Structural Biology, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Yoshida Shimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Yasumasa Joti
- Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Kensuke Tono
- Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Eriko Nango
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - So Iwata
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
- Department of Cell Biology, Graduate School of Medicine, Kyoto University, Yoshidakonoe-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Toru Nakatsu
- Department of Structural Biology, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Yoshida Shimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Hiroaki Kato
- Department of Structural Biology, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Yoshida Shimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| |
Collapse
|
15
|
Fransson T, Alonso-Mori R, Chatterjee R, Cheah MH, Ibrahim M, Hussein R, Zhang M, Fuller F, Gul S, Kim IS, Simon PS, Bogacz I, Makita H, de Lichtenberg C, Song S, Batyuk A, Sokaras D, Massad R, Doyle M, Britz A, Weninger C, Zouni A, Messinger J, Yachandra VK, Yano J, Kern J, Bergmann U. Effects of x-ray free-electron laser pulse intensity on the Mn K β 1,3 x-ray emission spectrum in photosystem II-A case study for metalloprotein crystals and solutions. STRUCTURAL DYNAMICS (MELVILLE, N.Y.) 2021; 8:064302. [PMID: 34849380 PMCID: PMC8610604 DOI: 10.1063/4.0000130] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 10/24/2021] [Indexed: 05/21/2023]
Abstract
In the last ten years, x-ray free-electron lasers (XFELs) have been successfully employed to characterize metalloproteins at room temperature using various techniques including x-ray diffraction, scattering, and spectroscopy. The approach has been to outrun the radiation damage by using femtosecond (fs) x-ray pulses. An example of an important and damage sensitive active metal center is the Mn4CaO5 cluster in photosystem II (PS II), the catalytic site of photosynthetic water oxidation. The combination of serial femtosecond x-ray crystallography and Kβ x-ray emission spectroscopy (XES) has proven to be a powerful multimodal approach for simultaneously probing the overall protein structure and the electronic state of the Mn4CaO5 cluster throughout the catalytic (Kok) cycle. As the observed spectral changes in the Mn4CaO5 cluster are very subtle, it is critical to consider the potential effects of the intense XFEL pulses on the Kβ XES signal. We report here a systematic study of the effects of XFEL peak power, beam focus, and dose on the Mn Kβ1,3 XES spectra in PS II over a wide range of pulse parameters collected over seven different experimental runs using both microcrystal and solution PS II samples. Our findings show that for beam intensities ranging from ∼5 × 1015 to 5 × 1017 W/cm2 at a pulse length of ∼35 fs, the spectral effects are small compared to those observed between S-states in the Kok cycle. Our results provide a benchmark for other XFEL-based XES studies on metalloproteins, confirming the viability of this approach.
Collapse
Affiliation(s)
- Thomas Fransson
- Department of Theoretical Chemistry and Biology, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Roberto Alonso-Mori
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Ruchira Chatterjee
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Mun Hon Cheah
- Department of Chemistry – Ångström Laboratory, Molecular Biomimetics, Uppsala University, SE 75120 Uppsala, Sweden
| | - Mohamed Ibrahim
- Humboldt-Universität zu Berlin, Department of Biology, 10099 Berlin, Germany
| | - Rana Hussein
- Humboldt-Universität zu Berlin, Department of Biology, 10099 Berlin, Germany
| | - Miao Zhang
- Humboldt-Universität zu Berlin, Department of Biology, 10099 Berlin, Germany
| | - Franklin Fuller
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Sheraz Gul
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - In-Sik Kim
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Philipp S. Simon
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Isabel Bogacz
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Hiroki Makita
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | | | - Sanghoon Song
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Alexander Batyuk
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Dimosthenis Sokaras
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Ramzi Massad
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Margaret Doyle
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | | | | | - Athina Zouni
- Humboldt-Universität zu Berlin, Department of Biology, 10099 Berlin, Germany
| | | | - Vittal K. Yachandra
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Junko Yano
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Jan Kern
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Uwe Bergmann
- Department of Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
| |
Collapse
|
16
|
Zhang J, Trejo M, Bradford SD, Lei L, Kong W. Electron Diffraction of Ionic Argon Nanoclusters Embedded in Superfluid Helium Droplets. J Phys Chem Lett 2021; 12:9644-9650. [PMID: 34586826 PMCID: PMC8550877 DOI: 10.1021/acs.jpclett.1c02712] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We report electron diffraction of cationic argon nanoclusters embedded in superfluid helium droplets. Superfluid helium droplets are first doped with neutral argon atoms to form nanoclusters, and then the doped droplets are ionized by electrons. The much lower ionization energy of argon ensures that the positive charge resides on the Ar nanocluster. Using different stagnation temperatures and therefore droplets with different sizes, we have been able to preferentially form a small ionic cluster containing 2-4 Ar atoms and a larger cluster containing 7-11 atoms. The fitting results of the diffraction profiles agree with structures reported from theoretical calculations, containing a cationic trimer core with the remaining atoms largely neutral. This work testifies to the feasibility of performing electron diffraction from ionic species embedded in superfluid helium droplets, dispelling the concern over the particle density in the diffraction region. However, the large number of neutral helium atoms surrounding the cationic nanoclusters poses a challenge for the detection of the helium solvation layer, and the detection of which awaits further technological improvements.
Collapse
Affiliation(s)
| | | | | | | | - Wei Kong
- Corresponding author, , 541-737-6714
| |
Collapse
|
17
|
Kamyshinsky RA, Kralin VA, Chesnokov MY, Samygina VR, Orekhov AS. Electron Diffraction of Microcrystals on the Example of Lysozyme. CRYSTALLOGR REP+ 2021. [DOI: 10.1134/s1063774521050084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
18
|
Brändén G, Neutze R. Advances and challenges in time-resolved macromolecular crystallography. Science 2021; 373:373/6558/eaba0954. [PMID: 34446579 DOI: 10.1126/science.aba0954] [Citation(s) in RCA: 66] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Conformational changes within biological macromolecules control a vast array of chemical reactions in living cells. Time-resolved crystallography can reveal time-dependent structural changes that occur within protein crystals, yielding chemical insights in unparalleled detail. Serial crystallography approaches developed at x-ray free-electron lasers are now routinely used for time-resolved diffraction studies of macromolecules. These techniques are increasingly being applied at synchrotron radiation sources and to a growing diversity of macromolecules. Here, we review recent progress in the field, including visualizing ultrafast structural changes that guide the initial trajectories of light-driven reactions as well as capturing biologically important conformational changes on slower time scales, for which bacteriorhodopsin and photosystem II are presented as illustrative case studies.
Collapse
Affiliation(s)
- Gisela Brändén
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden
| | - Richard Neutze
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden.
| |
Collapse
|
19
|
Durdagi S, Dağ Ç, Dogan B, Yigin M, Avsar T, Buyukdag C, Erol I, Ertem FB, Calis S, Yildirim G, Orhan MD, Guven O, Aksoydan B, Destan E, Sahin K, Besler SO, Oktay L, Shafiei A, Tolu I, Ayan E, Yuksel B, Peksen AB, Gocenler O, Yucel AD, Can O, Ozabrahamyan S, Olkan A, Erdemoglu E, Aksit F, Tanisali G, Yefanov OM, Barty A, Tolstikova A, Ketawala GK, Botha S, Dao EH, Hayes B, Liang M, Seaberg MH, Hunter MS, Batyuk A, Mariani V, Su Z, Poitevin F, Yoon CH, Kupitz C, Sierra RG, Snell EH, DeMirci H. Near-physiological-temperature serial crystallography reveals conformations of SARS-CoV-2 main protease active site for improved drug repurposing. Structure 2021; 29:1382-1396.e6. [PMID: 34403647 PMCID: PMC8367086 DOI: 10.1016/j.str.2021.07.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 05/19/2021] [Accepted: 07/20/2021] [Indexed: 02/06/2023]
Abstract
The COVID-19 pandemic has resulted in 198 million reported infections and more than 4 million deaths as of July 2021 (covid19.who.int). Research to identify effective therapies for COVID-19 includes: (1) designing a vaccine as future protection; (2) de novo drug discovery; and (3) identifying existing drugs to repurpose them as effective and immediate treatments. To assist in drug repurposing and design, we determine two apo structures of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) main protease at ambient temperature by serial femtosecond X-ray crystallography. We employ detailed molecular simulations of selected known main protease inhibitors with the structures and compare binding modes and energies. The combined structural and molecular modeling studies not only reveal the dynamics of small molecules targeting the main protease but also provide invaluable opportunities for drug repurposing and structure-based drug design strategies against SARS-CoV-2.
Collapse
Affiliation(s)
- Serdar Durdagi
- Computational Biology and Molecular Simulations Laboratory, Department of Biophysics, School of Medicine, Bahcesehir University, Istanbul 34734, Turkey.
| | - Çağdaş Dağ
- Department of Molecular Biology and Genetics, Koc University, Istanbul 34450, Turkey
| | - Berna Dogan
- Computational Biology and Molecular Simulations Laboratory, Department of Biophysics, School of Medicine, Bahcesehir University, Istanbul 34734, Turkey
| | - Merve Yigin
- Department of Molecular Biology and Genetics, Koc University, Istanbul 34450, Turkey
| | - Timucin Avsar
- Department of Medical Biology, School of Medicine, Bahcesehir University, Istanbul 34734, Turkey
| | - Cengizhan Buyukdag
- Department of Molecular Biology and Genetics, Koc University, Istanbul 34450, Turkey
| | - Ismail Erol
- Computational Biology and Molecular Simulations Laboratory, Department of Biophysics, School of Medicine, Bahcesehir University, Istanbul 34734, Turkey; Department of Chemistry, Gebze Technical University, Kocaeli 41400, Turkey
| | - Fatma Betul Ertem
- Department of Molecular Biology and Genetics, Koc University, Istanbul 34450, Turkey
| | - Seyma Calis
- Department of Medical Biology, School of Medicine, Bahcesehir University, Istanbul 34734, Turkey; Department of Molecular Biology - Genetics and Biotechnology, Istanbul Technical University, Istanbul 34469, Turkey
| | - Gunseli Yildirim
- Department of Molecular Biology and Genetics, Koc University, Istanbul 34450, Turkey
| | - Muge D Orhan
- Department of Medical Biology, School of Medicine, Bahcesehir University, Istanbul 34734, Turkey
| | - Omur Guven
- Department of Molecular Biology and Genetics, Koc University, Istanbul 34450, Turkey
| | - Busecan Aksoydan
- Computational Biology and Molecular Simulations Laboratory, Department of Biophysics, School of Medicine, Bahcesehir University, Istanbul 34734, Turkey; Neuroscience Program, Graduate School of Health Sciences, Bahcesehir University, Istanbul 34734, Turkey
| | - Ebru Destan
- Department of Molecular Biology and Genetics, Koc University, Istanbul 34450, Turkey
| | - Kader Sahin
- Computational Biology and Molecular Simulations Laboratory, Department of Biophysics, School of Medicine, Bahcesehir University, Istanbul 34734, Turkey
| | - Sabri O Besler
- Department of Molecular Biology and Genetics, Koc University, Istanbul 34450, Turkey
| | - Lalehan Oktay
- Computational Biology and Molecular Simulations Laboratory, Department of Biophysics, School of Medicine, Bahcesehir University, Istanbul 34734, Turkey
| | - Alaleh Shafiei
- Department of Molecular Biology and Genetics, Koc University, Istanbul 34450, Turkey
| | - Ilayda Tolu
- Computational Biology and Molecular Simulations Laboratory, Department of Biophysics, School of Medicine, Bahcesehir University, Istanbul 34734, Turkey
| | - Esra Ayan
- Department of Molecular Biology and Genetics, Koc University, Istanbul 34450, Turkey
| | - Busra Yuksel
- Department of Molecular Biology and Genetics, Koc University, Istanbul 34450, Turkey
| | - Ayse B Peksen
- Department of Molecular Biology and Genetics, Koc University, Istanbul 34450, Turkey
| | - Oktay Gocenler
- Department of Molecular Biology and Genetics, Koc University, Istanbul 34450, Turkey
| | - Ali D Yucel
- Department of Molecular Biology and Genetics, Koc University, Istanbul 34450, Turkey
| | - Ozgur Can
- Department of Molecular Biology and Genetics, Koc University, Istanbul 34450, Turkey
| | - Serena Ozabrahamyan
- Department of Molecular Biology and Genetics, Koc University, Istanbul 34450, Turkey
| | - Alpsu Olkan
- Computational Biology and Molecular Simulations Laboratory, Department of Biophysics, School of Medicine, Bahcesehir University, Istanbul 34734, Turkey; School of Medicine, Bahcesehir University, Istanbul 34734, Turkey
| | - Ece Erdemoglu
- Computational Biology and Molecular Simulations Laboratory, Department of Biophysics, School of Medicine, Bahcesehir University, Istanbul 34734, Turkey; Faculty of Medicine, Mersin University, Mersin 33070, Turkey
| | - Fulya Aksit
- Department of Molecular Biology and Genetics, Koc University, Istanbul 34450, Turkey
| | - Gokhan Tanisali
- Department of Molecular Biology and Genetics, Koc University, Istanbul 34450, Turkey
| | | | - Anton Barty
- Deutsches Elektronen-Synchrotron, Notkestrasse 85, Hamburg 22607, Germany
| | | | - Gihan K Ketawala
- Department of Physics, Arizona State University, Tempe, AZ 85287-1504, USA; Biodesign Center for Applied Structural Discovery, Arizona State University, Tempe, AZ 85287-5001, USA
| | - Sabine Botha
- Department of Physics, Arizona State University, Tempe, AZ 85287-1504, USA; Biodesign Center for Applied Structural Discovery, Arizona State University, Tempe, AZ 85287-5001, USA
| | - E Han Dao
- Stanford PULSE Institute, SLAC National Laboratory, Menlo Park, CA 94025, USA
| | - Brandon Hayes
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Mengning Liang
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Matthew H Seaberg
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Mark S Hunter
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Alex Batyuk
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Valerio Mariani
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Zhen Su
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA; Department of Applied Physics, Stanford University, Stanford, CA, USA
| | - Frederic Poitevin
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Chun Hong Yoon
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Christopher Kupitz
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Raymond G Sierra
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Edward H Snell
- Hauptman-Woodward Medical Research Institute, University at Buffalo, 700 Ellicott St, Buffalo, NY, USA; Materials Design and Innovation, SUNY at Buffalo, 700 Ellicott St., Buffalo, NY, USA
| | - Hasan DeMirci
- Department of Molecular Biology and Genetics, Koc University, Istanbul 34450, Turkey; Stanford PULSE Institute, SLAC National Laboratory, Menlo Park, CA 94025, USA; Koc University Isbank Center for Infectious Diseases (KUISCID), 34450, Istanbul, Turkey.
| |
Collapse
|
20
|
Czyzewski A, Krawiec F, Brzezinski D, Porebski PJ, Minor W. Detecting anomalies in X-ray diffraction images using convolutional neural networks. EXPERT SYSTEMS WITH APPLICATIONS 2021; 174:114740. [PMID: 34366575 PMCID: PMC8341115 DOI: 10.1016/j.eswa.2021.114740] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Our understanding of life is based upon the interpretation of macromolecular structures and their dynamics. Almost 90% of currently known macromolecular models originated from electron density maps constructed using X-ray diffraction images. Even though diffraction images are critical for structure determination, due to their vast amounts and noisy, non-intuitive nature, their quality is rarely inspected. In this paper, we use recent advances in machine learning to automatically detect seven types of anomalies in X-ray diffraction images. For this purpose, we utilize a novel X-ray beam center detection algorithm, propose three different image representations, and compare the predictive performance of general-purpose classifiers and deep convolutional neural networks (CNNs). In benchmark tests on a set of 6,311 X-ray diffraction images, the proposed CNN achieved between 87% and 99% accuracy depending on the type of anomaly. Experimental results show that the proposed anomaly detection system can be considered suitable for early detection of sub-optimal data collection conditions and malfunctions at X-ray experimental stations.
Collapse
Affiliation(s)
- Adam Czyzewski
- Institute of Computing Science, Poznan University of
Technology, ul. Piotrowo 2, 60-965 Poznan, Poland
| | - Faustyna Krawiec
- Institute of Computing Science, Poznan University of
Technology, ul. Piotrowo 2, 60-965 Poznan, Poland
| | - Dariusz Brzezinski
- Institute of Computing Science, Poznan University of
Technology, ul. Piotrowo 2, 60-965 Poznan, Poland
- Center for Biocrystallographic Research, Institute of
Bioorganic Chemistry, Polish Academy of Sciences, Poznan, 61-714, Poland
- Center for Artificial Intelligence and Machine Learning,
Poznan University of Technology, ul. Piotrowo 2, 60-965 Poznan, Poland
- Department of Molecular Physiology and Biological Physics,
University of Virginia, Charlottesville, VA 22901, USA
| | - Przemyslaw Jerzy Porebski
- Department of Molecular Physiology and Biological Physics,
University of Virginia, Charlottesville, VA 22901, USA
| | - Wladek Minor
- Department of Molecular Physiology and Biological Physics,
University of Virginia, Charlottesville, VA 22901, USA
| |
Collapse
|
21
|
Ohkubo YZ, Madsen JJ. Uncovering Membrane-Bound Models of Coagulation Factors by Combined Experimental and Computational Approaches. Thromb Haemost 2021; 121:1122-1137. [PMID: 34214998 PMCID: PMC8432591 DOI: 10.1055/s-0040-1722187] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
In the life sciences, including hemostasis and thrombosis, methods of structural biology have become indispensable tools for shedding light on underlying mechanisms that govern complex biological processes. Advancements of the relatively young field of computational biology have matured to a point where it is increasingly recognized as trustworthy and useful, in part due to their high space–time resolution that is unparalleled by most experimental techniques to date. In concert with biochemical and biophysical approaches, computational studies have therefore proven time and again in recent years to be key assets in building or suggesting structural models for membrane-bound forms of coagulation factors and their supramolecular complexes on membrane surfaces where they are activated. Such endeavors and the proposed models arising from them are of fundamental importance in describing and understanding the molecular basis of hemostasis under both health and disease conditions. We summarize the body of work done in this important area of research to drive forward both experimental and computational studies toward new discoveries and potential future therapeutic strategies.
Collapse
Affiliation(s)
- Y Zenmei Ohkubo
- Department of Bioinformatics, School of Life and Natural Sciences, Abdullah Gül University, Kayseri, Turkey
| | - Jesper J Madsen
- Global and Planetary Health, College of Public Health, University of South Florida, Tampa, Florida, United States
| |
Collapse
|
22
|
Lahey-Rudolph JM, Schönherr R, Barthelmess M, Fischer P, Seuring C, Wagner A, Meents A, Redecke L. Fixed-target serial femtosecond crystallography using in cellulo grown microcrystals. IUCRJ 2021; 8:665-677. [PMID: 34258014 PMCID: PMC8256716 DOI: 10.1107/s2052252521005297] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 05/18/2021] [Indexed: 05/05/2023]
Abstract
The crystallization of recombinant proteins in living cells is an exciting new approach in structural biology. Recent success has highlighted the need for fast and efficient diffraction data collection, optimally directly exposing intact crystal-containing cells to the X-ray beam, thus protecting the in cellulo crystals from environmental challenges. Serial femtosecond crystallography (SFX) at free-electron lasers (XFELs) allows the collection of detectable diffraction even from tiny protein crystals, but requires very fast sample exchange to utilize each XFEL pulse. Here, an efficient approach is presented for high-resolution structure elucidation using serial femtosecond in cellulo diffraction of micometre-sized crystals of the protein HEX-1 from the fungus Neurospora crassa on a fixed target. Employing the fast and highly accurate Roadrunner II translation-stage system allowed efficient raster scanning of the pores of micro-patterned, single-crystalline silicon chips loaded with living, crystal-containing insect cells. Compared with liquid-jet and LCP injection systems, the increased hit rates of up to 30% and reduced background scattering enabled elucidation of the HEX-1 structure. Using diffraction data from only a single chip collected within 12 min at the Linac Coherent Light Source, a 1.8 Å resolution structure was obtained with significantly reduced sample consumption compared with previous SFX experiments using liquid-jet injection. This HEX-1 structure is almost superimposable with that previously determined using synchrotron radiation from single HEX-1 crystals grown by sitting-drop vapour diffusion, validating the approach. This study demonstrates that fixed-target SFX using micro-patterned silicon chips is ideally suited for efficient in cellulo diffraction data collection using living, crystal-containing cells, and offers huge potential for the straightforward structure elucidation of proteins that form intracellular crystals at both XFELs and synchrotron sources.
Collapse
Affiliation(s)
- J. Mia Lahey-Rudolph
- Institute of Biochemistry, University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany
- Center for Free-Electron Laser Science (CFEL), Deutsches Elektronen Synchrotron (DESY), Notkestrasse 85, 22607 Hamburg, Germany
| | - Robert Schönherr
- Institute of Biochemistry, University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany
- Photon Science, Deutsches Elektronen Synchrotron (DESY), Notkestrasse 85, 22607 Hamburg, Germany
| | - Miriam Barthelmess
- Center for Free-Electron Laser Science (CFEL), Deutsches Elektronen Synchrotron (DESY), Notkestrasse 85, 22607 Hamburg, Germany
| | - Pontus Fischer
- Center for Free-Electron Laser Science (CFEL), Deutsches Elektronen Synchrotron (DESY), Notkestrasse 85, 22607 Hamburg, Germany
| | - Carolin Seuring
- Center for Free-Electron Laser Science (CFEL), Deutsches Elektronen Synchrotron (DESY), Notkestrasse 85, 22607 Hamburg, Germany
- The Hamburg Center for Ultrafast Imaging, 22671 Hamburg, Germany
| | - Armin Wagner
- Diamond Light Source, Diamond House DH2-52, Chilton, Didcot OX11 0DE, United Kingdom
| | - Alke Meents
- Center for Free-Electron Laser Science (CFEL), Deutsches Elektronen Synchrotron (DESY), Notkestrasse 85, 22607 Hamburg, Germany
- Photon Science, Deutsches Elektronen Synchrotron (DESY), Notkestrasse 85, 22607 Hamburg, Germany
| | - Lars Redecke
- Institute of Biochemistry, University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany
- Photon Science, Deutsches Elektronen Synchrotron (DESY), Notkestrasse 85, 22607 Hamburg, Germany
| |
Collapse
|
23
|
Atsavapranee B, Stark CD, Sunden F, Thompson S, Fordyce PM. Fundamentals to function: Quantitative and scalable approaches for measuring protein stability. Cell Syst 2021; 12:547-560. [PMID: 34139165 DOI: 10.1016/j.cels.2021.05.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 04/16/2021] [Accepted: 05/07/2021] [Indexed: 12/11/2022]
Abstract
Folding a linear chain of amino acids into a three-dimensional protein is a complex physical process that ultimately confers an impressive range of diverse functions. Although recent advances have driven significant progress in predicting three-dimensional protein structures from sequence, proteins are not static molecules. Rather, they exist as complex conformational ensembles defined by energy landscapes spanning the space of sequence and conditions. Quantitatively mapping the physical parameters that dictate these landscapes and protein stability is therefore critical to develop models that are capable of predicting how mutations alter function of proteins in disease and informing the design of proteins with desired functions. Here, we review the approaches that are used to quantify protein stability at a variety of scales, from returning multiple thermodynamic and kinetic measurements for a single protein sequence to yielding indirect insights into folding across a vast sequence space. The physical parameters derived from these approaches will provide a foundation for models that extend beyond the structural prediction to capture the complexity of conformational ensembles and, ultimately, their function.
Collapse
Affiliation(s)
| | - Catherine D Stark
- Department of Biochemistry, Stanford University, Stanford, CA 94305, USA; ChEM-H, Stanford University, Stanford, CA 94305, USA
| | - Fanny Sunden
- Department of Biochemistry, Stanford University, Stanford, CA 94305, USA
| | - Samuel Thompson
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA.
| | - Polly M Fordyce
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA; ChEM-H, Stanford University, Stanford, CA 94305, USA; Department of Genetics, Stanford University, Stanford, CA 94305, USA; Chan Zuckerberg Biohub, San Francisco, CA 94110, USA.
| |
Collapse
|
24
|
Suzuki T. Spiers Memorial Lecture: Introduction to ultrafast spectroscopy and imaging of photochemical reactions. Faraday Discuss 2021; 228:11-38. [PMID: 33876168 DOI: 10.1039/d1fd00015b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A brief overview is presented on ultrafast spectroscopy and imaging of photochemical reactions by highlighting several experimental studies reported in the last five years. A particular focus is placed on new experiments performed using high-order harmonic generation, X-ray free electron lasers, and relativistic electron beams. Exploration of fundamental chemical reaction dynamics using these advanced experimental methodologies is in an early stage, and exciting new research opportunities await in this rapidly expanding and advancing research field. At the same time, there is no experimental methodology that provides all aspects of the electronic and structural dynamics in a single experiment, and investigations using different methodologies with various perspectives need to be considered in a comprehensive manner.
Collapse
Affiliation(s)
- Toshinori Suzuki
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan.
| |
Collapse
|
25
|
Shaye H, Stauch B, Gati C, Cherezov V. Molecular mechanisms of metabotropic GABA B receptor function. SCIENCE ADVANCES 2021; 7:7/22/eabg3362. [PMID: 34049877 PMCID: PMC8163086 DOI: 10.1126/sciadv.abg3362] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 04/14/2021] [Indexed: 05/06/2023]
Abstract
Metabotropic γ-aminobutyric acid G protein-coupled receptors (GABAB) represent one of the two main types of inhibitory neurotransmitter receptors in the brain. These receptors act both pre- and postsynaptically by modulating the transmission of neuronal signals and are involved in a range of neurological diseases, from alcohol addiction to epilepsy. A series of recent cryo-EM studies revealed critical details of the activation mechanism of GABAB Structures are now available for the receptor bound to ligands with different modes of action, including antagonists, agonists, and positive allosteric modulators, and captured in different conformational states from the inactive apo to the fully active state bound to a G protein. These discoveries provide comprehensive insights into the activation of the GABAB receptor, which not only broaden our understanding of its structure, pharmacology, and physiological effects but also will ultimately facilitate the discovery of new therapeutic drugs and neuromodulators.
Collapse
Affiliation(s)
- Hamidreza Shaye
- Department of Chemistry, University of Southern California, Los Angeles, CA, USA
- Bridge Institute, Michelson Center for Convergent Biosciences, University of Southern California, Los Angeles, CA, USA
| | - Benjamin Stauch
- Department of Chemistry, University of Southern California, Los Angeles, CA, USA
- Bridge Institute, Michelson Center for Convergent Biosciences, University of Southern California, Los Angeles, CA, USA
| | - Cornelius Gati
- Bridge Institute, Michelson Center for Convergent Biosciences, University of Southern California, Los Angeles, CA, USA
- Biosciences Division, SLAC National Accelerator Laboratory, Menlo Park, CA, USA
- Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA
| | - Vadim Cherezov
- Department of Chemistry, University of Southern California, Los Angeles, CA, USA.
- Bridge Institute, Michelson Center for Convergent Biosciences, University of Southern California, Los Angeles, CA, USA
- Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA
| |
Collapse
|
26
|
Subramanian M, Kielar C, Tsushima S, Fahmy K, Oertel J. DNA-Mediated Stack Formation of Nanodiscs. Molecules 2021; 26:1647. [PMID: 33809519 PMCID: PMC8000961 DOI: 10.3390/molecules26061647] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 03/05/2021] [Accepted: 03/12/2021] [Indexed: 11/16/2022] Open
Abstract
Membrane-scaffolding proteins (MSPs) derived from apolipoprotein A-1 have become a versatile tool in generating nano-sized discoidal membrane mimetics (nanodiscs) for membrane protein research. Recent efforts have aimed at exploiting their controlled lipid protein ratio and size distribution to arrange membrane proteins in regular supramolecular structures for diffraction studies. Thereby, direct membrane protein crystallization, which has remained the limiting factor in structure determination of membrane proteins, would be circumvented. We describe here the formation of multimers of membrane-scaffolding protein MSP1D1-bounded nanodiscs using the thiol reactivity of engineered cysteines. The mutated positions N42 and K163 in MSP1D1 were chosen to support chemical modification as evidenced by fluorescent labeling with pyrene. Minimal interference with the nanodisc formation and structure was demonstrated by circular dichroism spectroscopy, differential light scattering and size exclusion chromatography. The direct disulphide bond formation of nanodiscs formed by the MSP1D1_N42C variant led to dimers and trimers with low yield. In contrast, transmission electron microscopy revealed that the attachment of oligonucleotides to the engineered cysteines of MSP1D1 allowed the growth of submicron-sized tracts of stacked nanodiscs through the hybridization of nanodisc populations carrying complementary strands and a flexible spacer.
Collapse
Affiliation(s)
- Madhumalar Subramanian
- Biophysics Department, Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, 01328 Dresden, Germany; (M.S.); (C.K.); (S.T.)
- Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, 01062 Dresden, Germany
| | - Charlotte Kielar
- Biophysics Department, Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, 01328 Dresden, Germany; (M.S.); (C.K.); (S.T.)
| | - Satoru Tsushima
- Biophysics Department, Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, 01328 Dresden, Germany; (M.S.); (C.K.); (S.T.)
| | - Karim Fahmy
- Biophysics Department, Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, 01328 Dresden, Germany; (M.S.); (C.K.); (S.T.)
- Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, 01062 Dresden, Germany
| | - Jana Oertel
- Biophysics Department, Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, 01328 Dresden, Germany; (M.S.); (C.K.); (S.T.)
| |
Collapse
|
27
|
Bauer WJ, Woodruff SB. A science education model for large collaborative centers. STRUCTURAL DYNAMICS (MELVILLE, N.Y.) 2021; 8:020402. [PMID: 33728362 PMCID: PMC7936880 DOI: 10.1063/4.0000081] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 02/02/2021] [Indexed: 06/12/2023]
Affiliation(s)
| | - Sarah B. Woodruff
- Discovery Center for Evaluation, Research, and Professional Learning, Miami University, Oxford, Ohio 45056, USA
| |
Collapse
|
28
|
Beyond X-rays: an overview of emerging structural biology methods. Emerg Top Life Sci 2021; 5:221-230. [DOI: 10.1042/etls20200272] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 12/27/2020] [Accepted: 01/20/2021] [Indexed: 11/17/2022]
Abstract
Structural biologists rely on X-ray crystallography as the main technique for determining the three-dimensional structures of macromolecules; however, in recent years, new methods that go beyond X-ray-based technologies are broadening the selection of tools to understand molecular structure and function. Simultaneously, national facilities are developing programming tools and maintaining personnel to aid novice structural biologists in de novo structure determination. The combination of X-ray free electron lasers (XFELs) and serial femtosecond crystallography (SFX) now enable time-resolved structure determination that allows for capture of dynamic processes, such as reaction mechanism and conformational flexibility. XFEL and SFX, along with microcrystal electron diffraction (MicroED), help side-step the need for large crystals for structural studies. Moreover, advances in cryogenic electron microscopy (cryo-EM) as a tool for structure determination is revolutionizing how difficult to crystallize macromolecules and/or complexes can be visualized at the atomic scale. This review aims to provide a broad overview of these new methods and to guide readers to more in-depth literature of these methods.
Collapse
|
29
|
Birch J, Cheruvara H, Gamage N, Harrison PJ, Lithgo R, Quigley A. Changes in Membrane Protein Structural Biology. BIOLOGY 2020; 9:E401. [PMID: 33207666 PMCID: PMC7696871 DOI: 10.3390/biology9110401] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 11/11/2020] [Accepted: 11/12/2020] [Indexed: 12/21/2022]
Abstract
Membrane proteins are essential components of many biochemical processes and are important pharmaceutical targets. Membrane protein structural biology provides the molecular rationale for these biochemical process as well as being a highly useful tool for drug discovery. Unfortunately, membrane protein structural biology is a difficult area of study due to low protein yields and high levels of instability especially when membrane proteins are removed from their native environments. Despite this instability, membrane protein structural biology has made great leaps over the last fifteen years. Today, the landscape is almost unrecognisable. The numbers of available atomic resolution structures have increased 10-fold though advances in crystallography and more recently by cryo-electron microscopy. These advances in structural biology were achieved through the efforts of many researchers around the world as well as initiatives such as the Membrane Protein Laboratory (MPL) at Diamond Light Source. The MPL has helped, provided access to and contributed to advances in protein production, sample preparation and data collection. Together, these advances have enabled higher resolution structures, from less material, at a greater rate, from a more diverse range of membrane protein targets. Despite this success, significant challenges remain. Here, we review the progress made and highlight current and future challenges that will be overcome.
Collapse
Affiliation(s)
- James Birch
- Membrane Protein Laboratory, Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot OX11 0DE, UK; (J.B.); (H.C.); (N.G.); (P.J.H.); (R.L.)
- Research Complex at Harwell (RCaH), Harwell Science and Innovation Campus, Didcot OX11 0FA, UK
| | - Harish Cheruvara
- Membrane Protein Laboratory, Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot OX11 0DE, UK; (J.B.); (H.C.); (N.G.); (P.J.H.); (R.L.)
- Research Complex at Harwell (RCaH), Harwell Science and Innovation Campus, Didcot OX11 0FA, UK
| | - Nadisha Gamage
- Membrane Protein Laboratory, Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot OX11 0DE, UK; (J.B.); (H.C.); (N.G.); (P.J.H.); (R.L.)
- Research Complex at Harwell (RCaH), Harwell Science and Innovation Campus, Didcot OX11 0FA, UK
| | - Peter J. Harrison
- Membrane Protein Laboratory, Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot OX11 0DE, UK; (J.B.); (H.C.); (N.G.); (P.J.H.); (R.L.)
- Research Complex at Harwell (RCaH), Harwell Science and Innovation Campus, Didcot OX11 0FA, UK
| | - Ryan Lithgo
- Membrane Protein Laboratory, Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot OX11 0DE, UK; (J.B.); (H.C.); (N.G.); (P.J.H.); (R.L.)
- Research Complex at Harwell (RCaH), Harwell Science and Innovation Campus, Didcot OX11 0FA, UK
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough LE12 5RD, Leicestershire, UK
| | - Andrew Quigley
- Membrane Protein Laboratory, Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot OX11 0DE, UK; (J.B.); (H.C.); (N.G.); (P.J.H.); (R.L.)
- Research Complex at Harwell (RCaH), Harwell Science and Innovation Campus, Didcot OX11 0FA, UK
| |
Collapse
|
30
|
Nass K. Pixel modelling - a new age in SFX data analysis. IUCRJ 2020; 7:949-950. [PMID: 33209307 PMCID: PMC7642796 DOI: 10.1107/s2052252520014281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A new program, diffBragg, employs per-pixel maximum likelihood optimization of X-ray pulse and crystal parameters to improve the accuracy of structure factor amplitudes attainable in SFX experiments.
Collapse
Affiliation(s)
- Karol Nass
- SwissFEL, Paul Scherrer Institut, Forschungsstrasse 111, Villigen PSI, 5232, Switzerland
| |
Collapse
|
31
|
Zhao FZ, Sun B, Yu L, Xiao QJ, Wang ZJ, Chen LL, Liang H, Wang QS, He JH, Yin DC. A novel sample delivery system based on circular motion for in situ serial synchrotron crystallography. LAB ON A CHIP 2020; 20:3888-3898. [PMID: 32966481 DOI: 10.1039/d0lc00443j] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A sample delivery system is one of the key parts of serial crystallography. It is the main limiting factor affecting the application of serial crystallography. At present, although a variety of useful sample delivery systems have been developed for serial crystallography, it still remains the focus of the field to further improve the performance and efficiency of sample delivery. In existing sample delivery technologies, samples are usually delivered in linear motion. Here we show that the samples can also be delivered using circular motion, which is a novel motion mode never tested before. In this paper, we report a microfluidic rotating-target sample delivery device, which is characterized by the circular motion of the samples, and verify the performance of the device at a synchrotron radiation facility. The microfluidic rotating-target sample delivery device consists of two parts: a microfluidic sample plate and a motion control system. Sample delivery is realized by rotating the microfluidic sample plate containing in situ grown crystals. This device offers significant advantages, including a very wide adjustable range of delivery speed, low background noise, and low sample consumption. Using the microfluidic rotating-target device, we carried out in situ serial crystallography experiments with lysozyme and proteinase K as model samples at the Shanghai Synchrotron Radiation Facility, and performed structural determination based on the serial crystallographic data. The results showed that the designed device is fully compatible with the synchrotron radiation facility, and the structure determination of proteins is successful using the serial crystallographic data obtained with the device.
Collapse
Affiliation(s)
- Feng-Zhu Zhao
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, China.
| | - Bo Sun
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, China
| | - Li Yu
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, China.
| | - Qing-Jie Xiao
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, China. and State Key Laboratory of Biotherapy, Sichuan University, Chengdu, China
| | - Zhi-Jun Wang
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, China
| | - Liang-Liang Chen
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, China.
| | - Huan Liang
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, China.
| | - Qi-Sheng Wang
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, China
| | - Jian-Hua He
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, China. and The Institute for Advanced Studies, Wuhan University, Wuhan, China
| | - Da-Chuan Yin
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, China. and Shenzhen Research Institute, Northwestern Polytechnical University, Shenzhen, China
| |
Collapse
|
32
|
Zhu L, Bu G, Jing L, Shi D, Lee MY, Gonen T, Liu W, Nannenga BL. Structure Determination from Lipidic Cubic Phase Embedded Microcrystals by MicroED. Structure 2020; 28:1149-1159.e4. [PMID: 32735770 PMCID: PMC7544639 DOI: 10.1016/j.str.2020.07.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 06/02/2020] [Accepted: 07/13/2020] [Indexed: 01/22/2023]
Abstract
The lipidic cubic phase (LCP) technique has proved to facilitate the growth of high-quality crystals that are otherwise difficult to grow by other methods. However, the crystal size optimization process could be time and resource consuming, if it ever happens. Therefore, improved techniques for structure determination using these small crystals is an important strategy in diffraction technology development. Microcrystal electron diffraction (MicroED) is a technique that uses a cryo-transmission electron microscopy to collect electron diffraction data and determine high-resolution structures from very thin micro- and nanocrystals. In this work, we have used modified LCP and MicroED protocols to analyze crystals embedded in LCP converted by 2-methyl-2,4-pentanediol or lipase, including Proteinase K crystals grown in solution, cholesterol crystals, and human adenosine A2A receptor crystals grown in LCP. These results set the stage for the use of MicroED to analyze microcrystalline samples grown in LCP, especially for those highly challenging membrane protein targets.
Collapse
Affiliation(s)
- Lan Zhu
- Biodesign Center for Applied Structural Discovery, Biodesign Institute, Arizona State University, 727 East Tyler Street, Tempe, AZ 85287, USA; School of Molecular Sciences, Arizona State University, 551 East University Drive, Tempe, AZ 85287, USA
| | - Guanhong Bu
- Biodesign Center for Applied Structural Discovery, Biodesign Institute, Arizona State University, 727 East Tyler Street, Tempe, AZ 85287, USA; School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, USA
| | - Liang Jing
- Biodesign Center for Applied Structural Discovery, Biodesign Institute, Arizona State University, 727 East Tyler Street, Tempe, AZ 85287, USA; School of Molecular Sciences, Arizona State University, 551 East University Drive, Tempe, AZ 85287, USA
| | - Dan Shi
- Structural Biophysics Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD, USA
| | - Ming-Yue Lee
- Biodesign Center for Applied Structural Discovery, Biodesign Institute, Arizona State University, 727 East Tyler Street, Tempe, AZ 85287, USA; School of Molecular Sciences, Arizona State University, 551 East University Drive, Tempe, AZ 85287, USA
| | - Tamir Gonen
- Howard Hughes Medical Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA; Departments of Biological Chemistry and Physiology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Wei Liu
- Biodesign Center for Applied Structural Discovery, Biodesign Institute, Arizona State University, 727 East Tyler Street, Tempe, AZ 85287, USA; School of Molecular Sciences, Arizona State University, 551 East University Drive, Tempe, AZ 85287, USA.
| | - Brent L Nannenga
- Biodesign Center for Applied Structural Discovery, Biodesign Institute, Arizona State University, 727 East Tyler Street, Tempe, AZ 85287, USA; School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, USA.
| |
Collapse
|
33
|
Echelmeier A, Cruz Villarreal J, Messerschmidt M, Kim D, Coe JD, Thifault D, Botha S, Egatz-Gomez A, Gandhi S, Brehm G, Conrad CE, Hansen DT, Madsen C, Bajt S, Meza-Aguilar JD, Oberthür D, Wiedorn MO, Fleckenstein H, Mendez D, Knoška J, Martin-Garcia JM, Hu H, Lisova S, Allahgholi A, Gevorkov Y, Ayyer K, Aplin S, Ginn HM, Graafsma H, Morgan AJ, Greiffenberg D, Klujev A, Laurus T, Poehlsen J, Trunk U, Mezza D, Schmidt B, Kuhn M, Fromme R, Sztuk-Dambietz J, Raab N, Hauf S, Silenzi A, Michelat T, Xu C, Danilevski C, Parenti A, Mekinda L, Weinhausen B, Mills G, Vagovic P, Kim Y, Kirkwood H, Bean R, Bielecki J, Stern S, Giewekemeyer K, Round AR, Schulz J, Dörner K, Grant TD, Mariani V, Barty A, Mancuso AP, Weierstall U, Spence JCH, Chapman HN, Zatsepin N, Fromme P, Kirian RA, Ros A. Segmented flow generator for serial crystallography at the European X-ray free electron laser. Nat Commun 2020; 11:4511. [PMID: 32908128 PMCID: PMC7481229 DOI: 10.1038/s41467-020-18156-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 07/23/2020] [Indexed: 12/14/2022] Open
Abstract
Serial femtosecond crystallography (SFX) with X-ray free electron lasers (XFELs) allows structure determination of membrane proteins and time-resolved crystallography. Common liquid sample delivery continuously jets the protein crystal suspension into the path of the XFEL, wasting a vast amount of sample due to the pulsed nature of all current XFEL sources. The European XFEL (EuXFEL) delivers femtosecond (fs) X-ray pulses in trains spaced 100 ms apart whereas pulses within trains are currently separated by 889 ns. Therefore, continuous sample delivery via fast jets wastes >99% of sample. Here, we introduce a microfluidic device delivering crystal laden droplets segmented with an immiscible oil reducing sample waste and demonstrate droplet injection at the EuXFEL compatible with high pressure liquid delivery of an SFX experiment. While achieving ~60% reduction in sample waste, we determine the structure of the enzyme 3-deoxy-D-manno-octulosonate-8-phosphate synthase from microcrystals delivered in droplets revealing distinct structural features not previously reported.
Collapse
Affiliation(s)
- Austin Echelmeier
- School of Molecular Sciences, Arizona State University, Tempe, AZ, 85287-1604, USA.,Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, AZ, 85287-7401, USA
| | - Jorvani Cruz Villarreal
- School of Molecular Sciences, Arizona State University, Tempe, AZ, 85287-1604, USA.,Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, AZ, 85287-7401, USA
| | - Marc Messerschmidt
- School of Molecular Sciences, Arizona State University, Tempe, AZ, 85287-1604, USA.,Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, AZ, 85287-7401, USA.,European XFEL, Holzkoppel 4, 22869, Schenefeld, Germany
| | - Daihyun Kim
- School of Molecular Sciences, Arizona State University, Tempe, AZ, 85287-1604, USA.,Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, AZ, 85287-7401, USA
| | - Jesse D Coe
- School of Molecular Sciences, Arizona State University, Tempe, AZ, 85287-1604, USA.,Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, AZ, 85287-7401, USA
| | - Darren Thifault
- School of Molecular Sciences, Arizona State University, Tempe, AZ, 85287-1604, USA.,Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, AZ, 85287-7401, USA
| | - Sabine Botha
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, AZ, 85287-7401, USA.,Department of Physics, Arizona State University, Tempe, AZ, 85287-1504, USA
| | - Ana Egatz-Gomez
- School of Molecular Sciences, Arizona State University, Tempe, AZ, 85287-1604, USA.,Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, AZ, 85287-7401, USA
| | - Sahir Gandhi
- School of Molecular Sciences, Arizona State University, Tempe, AZ, 85287-1604, USA.,Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, AZ, 85287-7401, USA
| | - Gerrit Brehm
- Institute for X-Ray Physics, University of Göttingen, Friedrich-Hund-Platz 1, 37077, Göttingen, Germany
| | - Chelsie E Conrad
- School of Molecular Sciences, Arizona State University, Tempe, AZ, 85287-1604, USA.,Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, AZ, 85287-7401, USA
| | - Debra T Hansen
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, AZ, 85287-7401, USA
| | - Caleb Madsen
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, AZ, 85287-7401, USA.,Department of Physics, Arizona State University, Tempe, AZ, 85287-1504, USA
| | - Saša Bajt
- Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22607, Hamburg, Germany.,Centre for Ultrafast Imaging, Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany
| | | | - Dominik Oberthür
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22607, Hamburg, Germany
| | - Max O Wiedorn
- Centre for Ultrafast Imaging, Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany.,Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22607, Hamburg, Germany
| | - Holger Fleckenstein
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22607, Hamburg, Germany
| | - Derek Mendez
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, AZ, 85287-7401, USA.,Department of Physics, Arizona State University, Tempe, AZ, 85287-1504, USA
| | - Juraj Knoška
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22607, Hamburg, Germany.,Department of Physics, Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany
| | - Jose M Martin-Garcia
- School of Molecular Sciences, Arizona State University, Tempe, AZ, 85287-1604, USA.,Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, AZ, 85287-7401, USA
| | - Hao Hu
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, AZ, 85287-7401, USA.,Department of Physics, Arizona State University, Tempe, AZ, 85287-1504, USA
| | - Stella Lisova
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, AZ, 85287-7401, USA.,Department of Physics, Arizona State University, Tempe, AZ, 85287-1504, USA
| | - Aschkan Allahgholi
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22607, Hamburg, Germany
| | - Yaroslav Gevorkov
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22607, Hamburg, Germany.,Hamburg University of Technology, Vision Systems E-2, Harburger Schloßstraße 20, 21079, Hamburg, Germany
| | - Kartik Ayyer
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22607, Hamburg, Germany
| | - Steve Aplin
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22607, Hamburg, Germany
| | - Helen Mary Ginn
- Division of Structural Biology, University of Oxford, Oxford, OX1 2JD, United Kingdom.,Diamond Light Source Ltd, Didcot, Oxfordshire, OX11 0DE, United Kingdom
| | - Heinz Graafsma
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22607, Hamburg, Germany
| | - Andrew J Morgan
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22607, Hamburg, Germany
| | | | - Alexander Klujev
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22607, Hamburg, Germany
| | - Torsten Laurus
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22607, Hamburg, Germany
| | - Jennifer Poehlsen
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22607, Hamburg, Germany
| | - Ulrich Trunk
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22607, Hamburg, Germany
| | - Davide Mezza
- Paul Scherrer Institute, Forschungsstrasse 111, 5232, Villigen, Switzerland
| | - Bernd Schmidt
- Paul Scherrer Institute, Forschungsstrasse 111, 5232, Villigen, Switzerland
| | - Manuela Kuhn
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22607, Hamburg, Germany
| | - Raimund Fromme
- School of Molecular Sciences, Arizona State University, Tempe, AZ, 85287-1604, USA.,Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, AZ, 85287-7401, USA
| | | | - Natascha Raab
- European XFEL, Holzkoppel 4, 22869, Schenefeld, Germany
| | - Steffen Hauf
- European XFEL, Holzkoppel 4, 22869, Schenefeld, Germany
| | | | | | - Chen Xu
- European XFEL, Holzkoppel 4, 22869, Schenefeld, Germany
| | | | | | | | | | - Grant Mills
- European XFEL, Holzkoppel 4, 22869, Schenefeld, Germany
| | | | - Yoonhee Kim
- European XFEL, Holzkoppel 4, 22869, Schenefeld, Germany
| | | | - Richard Bean
- European XFEL, Holzkoppel 4, 22869, Schenefeld, Germany
| | | | - Stephan Stern
- European XFEL, Holzkoppel 4, 22869, Schenefeld, Germany.,Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22607, Hamburg, Germany
| | | | - Adam R Round
- European XFEL, Holzkoppel 4, 22869, Schenefeld, Germany.,School of Chemical and Physical Sciences, Keele University, Staffordshire, ST5 5AZ, United Kingdom
| | | | | | - Thomas D Grant
- Department of Structural Biology, Jacobs School of Medicine and Biomedical Sciences, SUNY University at Buffalo, 955 Main St, Buffalo, NY, 14203, USA
| | - Valerio Mariani
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22607, Hamburg, Germany
| | - Anton Barty
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22607, Hamburg, Germany
| | - Adrian P Mancuso
- European XFEL, Holzkoppel 4, 22869, Schenefeld, Germany.,Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, VIC, 3086, Australia
| | - Uwe Weierstall
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, AZ, 85287-7401, USA.,Department of Physics, Arizona State University, Tempe, AZ, 85287-1504, USA
| | - John C H Spence
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, AZ, 85287-7401, USA.,Department of Physics, Arizona State University, Tempe, AZ, 85287-1504, USA
| | - Henry N Chapman
- Centre for Ultrafast Imaging, Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany.,Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22607, Hamburg, Germany.,Department of Physics, Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany
| | - Nadia Zatsepin
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, AZ, 85287-7401, USA.,Department of Physics, Arizona State University, Tempe, AZ, 85287-1504, USA.,ARC Centre of Excellence in Advanced Molecular Imaging, Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, VIC, 3086, Australia
| | - Petra Fromme
- School of Molecular Sciences, Arizona State University, Tempe, AZ, 85287-1604, USA.,Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, AZ, 85287-7401, USA
| | - Richard A Kirian
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, AZ, 85287-7401, USA.,Department of Physics, Arizona State University, Tempe, AZ, 85287-1504, USA
| | - Alexandra Ros
- School of Molecular Sciences, Arizona State University, Tempe, AZ, 85287-1604, USA. .,Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, AZ, 85287-7401, USA.
| |
Collapse
|
34
|
Maeki M, Ito S, Takeda R, Ueno G, Ishida A, Tani H, Yamamoto M, Tokeshi M. Room-temperature crystallography using a microfluidic protein crystal array device and its application to protein-ligand complex structure analysis. Chem Sci 2020; 11:9072-9087. [PMID: 34094189 PMCID: PMC8162031 DOI: 10.1039/d0sc02117b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Room-temperature (RT) protein crystallography provides significant information to elucidate protein function under physiological conditions. In particular, contrary to typical binding assays, X-ray crystal structure analysis of a protein–ligand complex can determine the three-dimensional (3D) configuration of its binding site. This allows the development of effective drugs by structure-based and fragment-based (FBDD) drug design. However, RT crystallography and RT crystallography-based protein–ligand complex analyses require the preparation and measurement of numerous crystals to avoid the X-ray radiation damage. Thus, for the application of RT crystallography to protein–ligand complex analysis, the simultaneous preparation of protein–ligand complex crystals and sequential X-ray diffraction measurement remain challenging. Here, we report an RT crystallography technique using a microfluidic protein crystal array device for protein–ligand complex structure analysis. We demonstrate the microfluidic sorting of protein crystals into microwells without any complicated procedures and apparatus, whereby the sorted protein crystals are fixed into microwells and sequentially measured to collect X-ray diffraction data. This is followed by automatic data processing to calculate the 3D protein structure. The microfluidic device allows the high-throughput preparation of the protein–ligand complex solely by the replacement of the microchannel content with the required ligand solution. We determined eight trypsin–ligand complex structures for the proof of concept experiment and found differences in the ligand coordination of the corresponding RT and conventional cryogenic structures. This methodology can be applied to easily obtain more natural structures. Moreover, drug development by FBDD could be more effective using the proposed methodology. Room temperature protein crystallography and its application to protein–ligand complex structure analysis was demonstrated using a microfluidic protein crystal array device.![]()
Collapse
Affiliation(s)
- Masatoshi Maeki
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University Kita 13 Nishi 8, Kita-ku Sapporo 060-8628 Japan +81-11-706-6745 +81-11-706-6745 +81-11-706-6744.,RIKEN SPring-8 Center 1-1-1 Kouto, Sayo-cho Sayo-gun Hyogo 679-5148 Japan
| | - Sho Ito
- Graduate School of Life Science, University of Hyogo 3-2-1 Kouto, Kamigori Ako Hyogo 678-1297 Japan.,ROD (Single Crystal Analysis) Group, Application Laboratories, Rigaku Corporation 3-9-12 Matubara-cho Akishima Tokyo 196-8666 Japan
| | - Reo Takeda
- Graduate School of Chemical Sciences and Engineering, Hokkaido University Kita 13 Nishi 8, Kita-ku Sapporo 060-8628 Japan
| | - Go Ueno
- RIKEN SPring-8 Center 1-1-1 Kouto, Sayo-cho Sayo-gun Hyogo 679-5148 Japan
| | - Akihiko Ishida
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University Kita 13 Nishi 8, Kita-ku Sapporo 060-8628 Japan +81-11-706-6745 +81-11-706-6745 +81-11-706-6744
| | - Hirofumi Tani
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University Kita 13 Nishi 8, Kita-ku Sapporo 060-8628 Japan +81-11-706-6745 +81-11-706-6745 +81-11-706-6744
| | - Masaki Yamamoto
- RIKEN SPring-8 Center 1-1-1 Kouto, Sayo-cho Sayo-gun Hyogo 679-5148 Japan.,Graduate School of Life Science, University of Hyogo 3-2-1 Kouto, Kamigori Ako Hyogo 678-1297 Japan
| | - Manabu Tokeshi
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University Kita 13 Nishi 8, Kita-ku Sapporo 060-8628 Japan +81-11-706-6745 +81-11-706-6745 +81-11-706-6744
| |
Collapse
|
35
|
The discovery of a new antibody for BRIL-fused GPCR structure determination. Sci Rep 2020; 10:11669. [PMID: 32669569 PMCID: PMC7363855 DOI: 10.1038/s41598-020-68355-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 06/21/2020] [Indexed: 12/17/2022] Open
Abstract
G-protein-coupled receptors (GPCRs)—the largest family of cell-surface membrane proteins—mediate the intracellular signal transduction of many external ligands. Thus, GPCRs have become important drug targets. X-ray crystal structures of GPCRs are very useful for structure-based drug design (SBDD). Herein, we produced a new antibody (SRP2070) targeting the thermostabilised apocytochrome b562 from Escherichia coli M7W/H102I/R106L (BRIL). We found that a fragment of this antibody (SRP2070Fab) facilitated the crystallisation of the BRIL-tagged, ligand bound GPCRs, 5HT1B and AT2R. Furthermore, the electron densities of the ligands were resolved, suggesting that SPR2070Fab is versatile and adaptable for GPCR SBDD. We anticipate that this new tool will significantly accelerate structure determination of other GPCRs and the design of small molecular drugs targeting them.
Collapse
|
36
|
Thompson MC, Yeates TO, Rodriguez JA. Advances in methods for atomic resolution macromolecular structure determination. F1000Res 2020; 9:F1000 Faculty Rev-667. [PMID: 32676184 PMCID: PMC7333361 DOI: 10.12688/f1000research.25097.1] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/25/2020] [Indexed: 12/13/2022] Open
Abstract
Recent technical advances have dramatically increased the power and scope of structural biology. New developments in high-resolution cryo-electron microscopy, serial X-ray crystallography, and electron diffraction have been especially transformative. Here we highlight some of the latest advances and current challenges at the frontiers of atomic resolution methods for elucidating the structures and dynamical properties of macromolecules and their complexes.
Collapse
Affiliation(s)
- Michael C. Thompson
- Department of Chemistry and Chemical Biology, University of California, Merced, CA, USA
| | - Todd O. Yeates
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, CA, USA
- UCLA-DOE Institute for Genomics and Proteomics, Los Angeles, CA, USA
| | - Jose A. Rodriguez
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, CA, USA
- UCLA-DOE Institute for Genomics and Proteomics, Los Angeles, CA, USA
| |
Collapse
|
37
|
Zhang J, Bradford SD, Kong W, Zhang C, Xue L. Electron diffraction of CS 2 nanoclusters embedded in superfluid helium droplets. J Chem Phys 2020; 152:224306. [PMID: 32534524 PMCID: PMC7292678 DOI: 10.1063/5.0011340] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 05/25/2020] [Indexed: 11/14/2022] Open
Abstract
We report experimental results from electron diffraction of CS2 nanoclusters embedded in superfluid helium droplets. From detailed measurements of the sizes of doped droplets, we can model the doping statistics under different experimental conditions, thereby obtaining the range of cluster sizes of CS2. Using a least squares fitting procedure, we can then determine the structures and contributions of dimers, trimers, and tetramers embedded in small droplets. While dimers prefer a stable gas phase structure, trimers and tetramers seem to forgo the highly symmetric gas phase structures and prefer compact cuts from the crystalline structure of CS2. In larger droplets containing more than 12 CS2 monomers, the diffraction profile is consistent with a three-dimensional nanostructure of bulk CS2. This work demonstrates the feasibility of electron diffraction for in situ monitoring of nanocluster formation in superfluid helium droplets.
Collapse
Affiliation(s)
- Jie Zhang
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, USA
| | - Stephen D. Bradford
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, USA
| | - Wei Kong
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, USA
| | - Chengzhu Zhang
- Department of Statistics, Oregon State University, Corvallis, Oregon 97331, USA
| | - Lan Xue
- Department of Statistics, Oregon State University, Corvallis, Oregon 97331, USA
| |
Collapse
|
38
|
Dejoie C, Tamura N. Pattern-matching indexing of Laue and monochromatic serial crystallography data for applications in materials science. J Appl Crystallogr 2020; 53:824-836. [PMID: 32684897 PMCID: PMC7312145 DOI: 10.1107/s160057672000521x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 04/13/2020] [Indexed: 11/11/2022] Open
Abstract
Serial crystallography data can be challenging to index, as each frame is processed individually, rather than being processed as a whole like in conventional X-ray single-crystal crystallography. An algorithm has been developed to index still diffraction patterns arising from small-unit-cell samples. The algorithm is based on the matching of reciprocal-lattice vector pairs, as developed for Laue microdiffraction data indexing, combined with three-dimensional pattern matching using a nearest-neighbors approach. As a result, large-bandpass data (e.g. 5-24 keV energy range) and monochromatic data can be processed, the main requirement being prior knowledge of the unit cell. Angles calculated in the vicinity of a few theoretical and experimental reciprocal-lattice vectors are compared, and only vectors with the highest number of common angles are selected as candidates to obtain the orientation matrix. Global matching on the entire pattern is then checked. Four indexing options are available, two for the ranking of the theoretical reciprocal-lattice vectors and two for reducing the number of possible candidates. The algorithm has been used to index several data sets collected under different experimental conditions on a series of model samples. Knowing the crystallographic structure of the sample and using this information to rank the theoretical reflections based on the structure factors helps the indexing of large-bandpass data for the largest-unit-cell samples. For small-bandpass data, shortening the candidate list to determine the orientation matrix should be based on matching pairs of reciprocal-lattice vectors instead of triplet matching.
Collapse
Affiliation(s)
- Catherine Dejoie
- European Synchrotron Radiation Facility, 71 Avenue des Martyrs, Grenoble 38000, France
| | - Nobumichi Tamura
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
| |
Collapse
|
39
|
Abstract
We review oxygen K-edge X-ray absorption spectra of both molecules and solids. We start with an overview of the main experimental aspects of oxygen K-edge X-ray absorption measurements including X-ray sources, monochromators, and detection schemes. Many recent oxygen K-edge studies combine X-ray absorption with time and spatially resolved measurements and/or operando conditions. The main theoretical and conceptual approximations for the simulation of oxygen K-edges are discussed in the Theory section. We subsequently discuss oxygen atoms and ions, binary molecules, water, and larger molecules containing oxygen, including biomolecular systems. The largest part of the review deals with the experimental results for solid oxides, starting from s- and p-electron oxides. Examples of theoretical simulations for these oxides are introduced in order to show how accurate a DFT description can be in the case of s and p electron overlap. We discuss the general analysis of the 3d transition metal oxides including discussions of the crystal field effect and the effects and trends in oxidation state and covalency. In addition to the general concepts, we give a systematic overview of the oxygen K-edges element by element, for the s-, p-, d-, and f-electron systems.
Collapse
Affiliation(s)
- Federica Frati
- Inorganic
chemistry and catalysis, Debye Institute for Nanomaterials Science, Utrecht University, 3584CG Utrecht, The Netherlands
| | | | - Frank M. F. de Groot
- Inorganic
chemistry and catalysis, Debye Institute for Nanomaterials Science, Utrecht University, 3584CG Utrecht, The Netherlands
| |
Collapse
|
40
|
Beale JH. Macromolecular X-ray crystallography: soon to be a road less travelled? Acta Crystallogr D Struct Biol 2020; 76:400-405. [PMID: 32355036 PMCID: PMC7193534 DOI: 10.1107/s2059798320004660] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Accepted: 04/03/2020] [Indexed: 11/14/2023] Open
Abstract
The number of new X-ray crystallography-based submissions to the Protein Data Bank appears to be at the beginning of a decline, perhaps signalling an end to the era of the dominance of X-ray crystallography within structural biology. This letter, from the viewpoint of a young structural biologist, applies the Copernican method to the life expectancy of crystallography and asks whether the technique is still the mainstay of structural biology. A study of the rate of Protein Data Bank depositions allows a more nuanced analysis of the fortunes of macromolecular X-ray crystallography and shows that cryo-electron microscopy might now be outcompeting crystallography for new labour and talent, perhaps heralding a change in the landscape of the field.
Collapse
Affiliation(s)
- John H. Beale
- Swiss Light Source, Paul Scherrer Institut, 5232 Villigen, Switzerland
| |
Collapse
|
41
|
Lesca E. Light-Sensitive Membrane Proteins as Tools to Generate Precision Treatments. J Membr Biol 2020; 253:81-86. [PMID: 32248246 DOI: 10.1007/s00232-020-00115-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 03/16/2020] [Indexed: 12/17/2022]
Abstract
INTRODUCTION BY ANA-NICOLETA BONDAR, BIOPHYSICS SECTION HEAD EDITOR: This issue of the Journal of Membrane Biology inaugurates Up-and-Coming Scientist, in which investigators at early career stages are invited to present recent research in the broad context of their discipline. We inaugurate Up-and-Coming Scientist with the essay by Dr. Elena Lesca of the ETH Zürich and the Paul Scherrer Institut, Switzerland. Dr. Lesca has completed her doctoral degree at the Technical University München, Germany, in 2014, and pursued postdoctoral research at the ETH Zürich and Paul Scherrer Institut, where she is Senior Assistant since 2019. Two recent papers by Dr. Lesca et al. (references 33 and 39) have used X-ray crystallography and experimental biophysics approaches to shed light on the mechanism of action of a membrane receptor from the G Protein-Coupled Receptor (GPCR) family, Jumping Spider Rhodopsin-1 (JSR-1). JSR-1 is a visual rhodopsin activated upon absorption of light by its covalently bound retinal chromophore. Unlike the better-understood bovine rhodopsin GPCR, which is monostable, JSR-1 is bistable (i.e., in JSR-1 the Schiff base that binds retinal to the protein stays protonated throughout the reaction cycle), and absorption of a second photon resets the retinal ligand to the resting state configuration. In her essay, Dr. Lesca discusses the implications of her work on JSR-1 and, more broadly, GPCR research, for state-of-the-art applications in optogenetics and drug design.
Collapse
Affiliation(s)
- Elena Lesca
- Department of Biology, ETH Zürich, 8093, Zurich, Switzerland. .,Laboratory of Biomolecular Research, Division of Biology and Chemistry, Paul Scherrer Institut, 5232, Villigen, Switzerland.
| |
Collapse
|
42
|
Membrane Protein Preparation for Serial Crystallography Using High-Viscosity Injectors: Rhodopsin as an Example. Methods Mol Biol 2020; 2127:321-338. [PMID: 32112331 DOI: 10.1007/978-1-0716-0373-4_21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
Abstract
Membrane proteins are highly interesting targets due to their pivotal role in cell function and disease. They are inserted in cell membranes, are often intrinsically flexible, and can adopt several conformational states to carry out their function. Although most overall folds of membrane proteins are known, many questions remain about specific functionally relevant intramolecular rearrangements that require experimental structure determination. Here, using the example of rhodopsin, we describe how to prepare and analyze membrane protein crystals for serial crystallography at room temperature, a new technique allowing to merge diffraction data from thousands of injector-delivered crystals that are too tiny for classical single-crystal analysis even in cryogenic conditions. The application of serial crystallography for studying protein dynamics is mentioned.
Collapse
|
43
|
Lei L, Yao Y, Zhang J, Tronrud D, Kong W, Zhang C, Xue L, Dontot L, Rapacioli M. Electron Diffraction of Pyrene Nanoclusters Embedded in Superfluid Helium Droplets. J Phys Chem Lett 2020; 11:724-729. [PMID: 31884792 PMCID: PMC7104692 DOI: 10.1021/acs.jpclett.9b03603] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We report electron diffraction of pyrene nanoclusters embedded in superfluid helium droplets. Using a least-squares fitting procedure, we have been able to separate the contribution of helium from those of the pyrene nanoclusters and determine the most likely structures for dimers and trimers. We confirm that pyrene dimers form a parallel double-layer structure with an interlayer distance of 3.5 Å and suggest that pyrene trimers form a sandwich structure but that the molecular planes are not completely parallel. The relative contributions of the dimers and trimers are ∼6:1. This work is an extension of our effort of solving structures of biological molecules using serial single-molecule electron diffraction imaging. The success of electron diffraction from an all-light-atom sample embedded in helium droplets offers reassuring evidence of the feasibility of this approach.
Collapse
Affiliation(s)
- Lei Lei
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| | - Yuzhong Yao
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| | - Jie Zhang
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| | - Dale Tronrud
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| | - Wei Kong
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| | - Chengzhu Zhang
- Department of Statistics, Oregon State University, Corvallis, Oregon 97331, United States
| | - Lan Xue
- Department of Statistics, Oregon State University, Corvallis, Oregon 97331, United States
| | - Léo Dontot
- Laboratoire de Chimie et Physique Quantiques, LCPQ/IRSAMC, UMR5626, Université de Toulouse (UPS) and CNRS, 118 Route de Narbonne, F-31062 Toulouse, France
| | - Mathias Rapacioli
- Laboratoire de Chimie et Physique Quantiques, LCPQ/IRSAMC, UMR5626, Université de Toulouse (UPS) and CNRS, 118 Route de Narbonne, F-31062 Toulouse, France
| |
Collapse
|
44
|
Nam KH. Shortening injection matrix for serial crystallography. Sci Rep 2020; 10:107. [PMID: 31919476 PMCID: PMC6952439 DOI: 10.1038/s41598-019-56135-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Accepted: 12/06/2019] [Indexed: 11/11/2022] Open
Abstract
Serial crystallography allows crystal structures to be determined at room temperature through the steady delivery of crystals to the X-ray interaction point. Viscous delivery media are advantageous because they afford efficient sample delivery from an injector or syringe at a low flow rate. Hydrophobic delivery media, such as lipidic cubic phase (LCP) or grease, provide a stable injection stream and are widely used. The development of new hydrophobic delivery materials can expand opportunities for future SX studies with various samples. Here, I introduce fat-based shortening as a delivery medium for SX experiments. This material is commercially available at low cost and is straightforward to handle because its phase (i.e., solid or liquid) can be controlled by temperature. Shortening was extruded from a syringe needle in a stable injection stream even below 200 nl/min. X-ray exposed shortening produced several background scattering rings, which have similar or lower intensities than those of LCP and contribute negligibly to data processing. Serial millisecond crystallography was performed using two shortening delivery media, and the room temperature crystal structures of lysozyme and glucose isomerase were successfully determined at resolutions of 1.5–2.0 Å. Therefore, shortening can be used as a sample delivery medium in SX experiments.
Collapse
Affiliation(s)
- Ki Hyun Nam
- Division of Biotechnology, Korea University, Seoul, Republic of Korea. .,Institute of Life Science and Natural Resources, Korea University, Seoul, Republic of Korea. .,Department of Life Science, Pohang University of Science and Technology, Pohang, Republic of Korea.
| |
Collapse
|
45
|
Shelby ML, Gilbile D, Grant TD, Seuring C, Segelke BW, He W, Evans AC, Pakendorf T, Fischer P, Hunter MS, Batyuk A, Barthelmess M, Meents A, Coleman MA, Kuhl TL, Frank M. A fixed-target platform for serial femtosecond crystallography in a hydrated environment. IUCRJ 2020; 7:30-41. [PMID: 31949902 PMCID: PMC6949605 DOI: 10.1107/s2052252519014003] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 10/15/2019] [Indexed: 05/19/2023]
Abstract
For serial femtosecond crystallography at X-ray free-electron lasers, which entails collection of single-pulse diffraction patterns from a constantly refreshed supply of microcrystalline sample, delivery of the sample into the X-ray beam path while maintaining low background remains a technical challenge for some experiments, especially where this methodology is applied to relatively low-ordered samples or those difficult to purify and crystallize in large quantities. This work demonstrates a scheme to encapsulate biological samples using polymer thin films and graphene to maintain sample hydration in vacuum conditions. The encapsulated sample is delivered into the X-ray beam on fixed targets for rapid scanning using the Roadrunner fixed-target system towards a long-term goal of low-background measurements on weakly diffracting samples. As a proof of principle, we used microcrystals of the 24 kDa rapid encystment protein (REP24) to provide a benchmark for polymer/graphene sandwich performance. The REP24 microcrystal unit cell obtained from our sandwiched in-vacuum sample was consistent with previously established unit-cell parameters and with those measured by us without encapsulation in humidified helium, indicating that the platform is robust against evaporative losses. While significant scattering from water was observed because of the sample-deposition method, the polymer/graphene sandwich itself was shown to contribute minimally to background scattering.
Collapse
Affiliation(s)
- M. L. Shelby
- Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
| | - D. Gilbile
- University of California at Davis, California, USA
| | - T. D. Grant
- Department of Structural Biology, Jacobs School of Medicine and Biomedical Sciences, Hauptman-Woodward Institute, SUNY University at Buffalo, Buffalo, New York, USA
| | - C. Seuring
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Hamburg, Germany
| | - B. W. Segelke
- Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
| | - W. He
- Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
| | - A. C. Evans
- Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
- University of California at Davis, California, USA
| | - T. Pakendorf
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Hamburg, Germany
| | - P. Fischer
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Hamburg, Germany
| | - M. S. Hunter
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California, USA
| | - A. Batyuk
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California, USA
| | - M. Barthelmess
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Hamburg, Germany
| | - A. Meents
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Hamburg, Germany
| | - M. A. Coleman
- Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
- University of California at Davis, California, USA
| | - T. L. Kuhl
- University of California at Davis, California, USA
| | - M. Frank
- Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
- University of California at Davis, California, USA
| |
Collapse
|
46
|
Karadag M, Arslan M, Kaleli NE, Kalyoncu S. Physicochemical determinants of antibody-protein interactions. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2019; 121:85-114. [PMID: 32312427 DOI: 10.1016/bs.apcsb.2019.08.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Antibodies are specialized proteins generated by immune system for high specificity and affinity binding to target antigens. Because of their essential roles in immune system, antibodies have been successfully developed and engineered as biopharmaceuticals for treatment of various diseases. Analysis of antibody-protein interactions is always required to get detailed information on effectivity of such antibody-based therapeutics. Although physicochemical rules cannot be generalized for every antibody-protein interaction, there are some features which should be taken into account during antibody development and engineering efforts. In this chapter, physicochemical analysis of antibody paratope-protein epitope interactions will be discussed to highlight important characteristics. First, paratope and non-paratope regions of antibodies will be described and important roles of these regions on binding and biophysical features of antibodies will be discussed. Then, general features of epitope regions of protein antigens will be introduced along with several computational/experimental tools to identify them. Lastly, a rising star of antibody biopharmaceuticals, nanobodies, will be described to show importance of next-generation antibody fragment based biopharmaceuticals in drug development.
Collapse
Affiliation(s)
- Murat Karadag
- Izmir Biomedicine and Genome Center, İzmir, Turkey; Izmir Biomedicine and Genome Institute, Dokuz Eylul University, İzmir, Turkey
| | - Merve Arslan
- Izmir Biomedicine and Genome Center, İzmir, Turkey; Izmir Biomedicine and Genome Institute, Dokuz Eylul University, İzmir, Turkey
| | - Nazli Eda Kaleli
- Izmir Biomedicine and Genome Center, İzmir, Turkey; Izmir Biomedicine and Genome Institute, Dokuz Eylul University, İzmir, Turkey
| | | |
Collapse
|
47
|
Koiwai K, Tsukimoto J, Higashi T, Mafuné F, Miyajima K, Nakane T, Matsugaki N, Kato R, Sirigu S, Jakobi A, Wilmanns M, Sugahara M, Tanaka T, Tono K, Joti Y, Yabashi M, Nureki O, Mizohata E, Nakatsu T, Nango E, Iwata S, Chavas LMG, Senda T, Itoh K, Yumoto F. Improvement of Production and Isolation of Human Neuraminidase-1 in Cellulo Crystals. ACS APPLIED BIO MATERIALS 2019; 2:4941-4952. [DOI: 10.1021/acsabm.9b00686] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Kotaro Koiwai
- Structural Biology Research Center, Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - Jun Tsukimoto
- Department of Medicinal Biotechnology, Institute for Medicinal Research, Graduate School of Pharmaceutical Science, Tokushima University, Tokushima 770-8501, Japan
| | - Tetsuya Higashi
- Department of Medicinal Biotechnology, Institute for Medicinal Research, Graduate School of Pharmaceutical Science, Tokushima University, Tokushima 770-8501, Japan
| | - Fumitaka Mafuné
- Department of Basic Science, School of Arts and Sciences, The University of Tokyo, Komaba, Meguro, Tokyo 153-8902, Japan
| | - Ken Miyajima
- Department of Basic Science, School of Arts and Sciences, The University of Tokyo, Komaba, Meguro, Tokyo 153-8902, Japan
| | - Takanori Nakane
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Naohiro Matsugaki
- Structural Biology Research Center, Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - Ryuichi Kato
- Structural Biology Research Center, Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
- School of High Energy Accelerator Science, SOKENDAI University, Tsukuba, Ibaraki 305-0801, Japan
| | - Serena Sirigu
- PROXIMA-1, Synchrotron SOLEIL, BP 48, L’Orme des Merisiers, 91192 Gif-sur-Yvette, France
| | - Arjen Jakobi
- Hamburg Unit c/o DESY, European Molecular Biology Laboratory (EMBL), Notkestrasse 85, 22607 Hamburg, Germany
- Structural and Computational Biology Unit, European Molecular Biology Laboratory (EMBL), Meyerhofstrasse 1, 69117 Heidelberg, Germany
- Department of Bionanoscience, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
| | - Matthias Wilmanns
- Hamburg Unit c/o DESY, European Molecular Biology Laboratory (EMBL), Notkestrasse 85, 22607 Hamburg, Germany
| | - Michihiro Sugahara
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Tomoyuki Tanaka
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
- Department of Cell Biology, Graduate School of Medicine, Kyoto University, Yoshidakonoe-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Kensuke Tono
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
- Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Yasumasa Joti
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
- Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Makina Yabashi
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
- Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Osamu Nureki
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Eiichi Mizohata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
- Japan Science and Technology Agency, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Toru Nakatsu
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo, Kyoto 606-8501, Japan
| | - Eriko Nango
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
- Department of Cell Biology, Graduate School of Medicine, Kyoto University, Yoshidakonoe-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - So Iwata
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
- Department of Cell Biology, Graduate School of Medicine, Kyoto University, Yoshidakonoe-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Leonard M. G. Chavas
- PROXIMA-1, Synchrotron SOLEIL, BP 48, L’Orme des Merisiers, 91192 Gif-sur-Yvette, France
| | - Toshiya Senda
- Structural Biology Research Center, Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
- School of High Energy Accelerator Science, SOKENDAI University, Tsukuba, Ibaraki 305-0801, Japan
| | - Kohji Itoh
- Department of Medicinal Biotechnology, Institute for Medicinal Research, Graduate School of Pharmaceutical Science, Tokushima University, Tokushima 770-8501, Japan
| | - Fumiaki Yumoto
- Structural Biology Research Center, Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| |
Collapse
|
48
|
Park SH, Park J, Lee SJ, Yang WS, Park S, Kim K, Park ZY, Song HK. A host dTMP-bound structure of T4 phage dCMP hydroxymethylase mutant using an X-ray free electron laser. Sci Rep 2019; 9:16316. [PMID: 31705139 PMCID: PMC6841964 DOI: 10.1038/s41598-019-52825-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Accepted: 10/22/2019] [Indexed: 01/21/2023] Open
Abstract
The hydroxymethylation of cytosine bases plays a vital role in the phage DNA protection system inside the host Escherichia coli. This modification is known to be catalyzed by the dCMP hydroxymethylase from bacteriophage T4 (T4dCH); structural information on the complexes with the substrate, dCMP and the co-factor, tetrahydrofolate is currently available. However, the detailed mechanism has not been understood clearly owing to a lack of structure in the complex with a reaction intermediate. We have applied the X-ray free electron laser (XFEL) technique to determine a high-resolution structure of a T4dCH D179N active site mutant. The XFEL structure was determined at room temperature and exhibited several unique features in comparison with previously determined structures. Unexpectedly, we observed a bulky electron density at the active site of the mutant that originated from the physiological host (i.e., E. coli). Mass-spectrometric analysis and a cautious interpretation of an electron density map indicated that it was a dTMP molecule. The bound dTMP mimicked the methylene intermediate from dCMP to 5′-hydroxymethy-dCMP, and a critical water molecule for the final hydroxylation was convincingly identified. Therefore, this study provides information that contributes to the understanding of hydroxymethylation.
Collapse
Affiliation(s)
- Si Hoon Park
- Department of Life Sciences, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, South Korea
| | - Jaehyun Park
- PAL-XFEL, Pohang Accelerator Laboratory, POSTECH, Pohang, Gyeongbuk, 37673, South Korea
| | - Sang Jae Lee
- PAL-XFEL, Pohang Accelerator Laboratory, POSTECH, Pohang, Gyeongbuk, 37673, South Korea
| | - Woo Seok Yang
- Department of Life Sciences, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, South Korea
| | - Sehan Park
- PAL-XFEL, Pohang Accelerator Laboratory, POSTECH, Pohang, Gyeongbuk, 37673, South Korea
| | - Kyungdo Kim
- School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, 61005, South Korea
| | - Zee-Yong Park
- School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, 61005, South Korea
| | - Hyun Kyu Song
- Department of Life Sciences, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, South Korea.
| |
Collapse
|
49
|
Khrenova MG, Kots ED, Kulakova AM, Nemukhin AV. Reconstructing the Electron Density of Intermediates of the Hydrolysis of N-Acetylaspartate by Aspartoacylase. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2019. [DOI: 10.1134/s003602441910011x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
50
|
Khakurel KP, Angelov B, Andreasson J. Macromolecular Nanocrystal Structural Analysis with Electron and X-Rays: A Comparative Review. Molecules 2019; 24:E3490. [PMID: 31561479 PMCID: PMC6804143 DOI: 10.3390/molecules24193490] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 09/24/2019] [Accepted: 09/25/2019] [Indexed: 01/10/2023] Open
Abstract
Crystallography has long been the unrivaled method that can provide the atomistic structural models of macromolecules, using either X-rays or electrons as probes. The methodology has gone through several revolutionary periods, driven by the development of new sources, detectors, and other instrumentation. Novel sources of both X-ray and electrons are constantly emerging. The increase in brightness of these sources, complemented by the advanced detection techniques, has relaxed the traditionally strict need for large, high quality, crystals. Recent reports suggest high-quality diffraction datasets from crystals as small as a few hundreds of nanometers can be routinely obtained. This has resulted in the genesis of a new field of macromolecular nanocrystal crystallography. Here we will make a brief comparative review of this growing field focusing on the use of X-rays and electrons sources.
Collapse
Affiliation(s)
- Krishna P Khakurel
- Institute of Physics, ELI Beamlines, Academy of Sciences of the Czech Republic, Na Slovance 2, CZ-18221 Prague, Czech Republic.
| | - Borislav Angelov
- Institute of Physics, ELI Beamlines, Academy of Sciences of the Czech Republic, Na Slovance 2, CZ-18221 Prague, Czech Republic.
| | - Jakob Andreasson
- Institute of Physics, ELI Beamlines, Academy of Sciences of the Czech Republic, Na Slovance 2, CZ-18221 Prague, Czech Republic.
- Department of Physics, Chalmers University of Technology, 412 96 Gothenburg, Sweden.
| |
Collapse
|