1
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McCarthy NLC, Chan CL, Mignini Urdaneta GECM, Liao Y, Law RV, Ces O, Seddon JM, Brooks NJ. The effect of hydrostatic pressure on lipid membrane lateral structure. Methods Enzymol 2024; 700:49-76. [PMID: 38971612 DOI: 10.1016/bs.mie.2024.03.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/08/2024]
Abstract
High pressure is both an environmental challenge to which deep sea biology has to adapt, and a highly sensitive thermodynamic tool that can be used to trigger structural changes in biological molecules and assemblies. Lipid membranes are amongst the most pressure sensitive biological assemblies and pressure can have a large influence on their structure and properties. In this chapter, we will explore the use of high pressure small angle X-ray diffraction and high pressure microscopy to measure and quantify changes in the lateral structure of lipid membranes under both equilibrium high pressure conditions and in response to pressure jumps.
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Affiliation(s)
| | - Chi L Chan
- Department of Chemistry, Imperial College London, London, United Kingdom
| | | | - Yifei Liao
- Department of Chemistry, Imperial College London, London, United Kingdom
| | - Robert V Law
- Department of Chemistry, Imperial College London, London, United Kingdom
| | - Oscar Ces
- Department of Chemistry, Imperial College London, London, United Kingdom
| | - John M Seddon
- Department of Chemistry, Imperial College London, London, United Kingdom
| | - Nicholas J Brooks
- Department of Chemistry, Imperial College London, London, United Kingdom.
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2
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Papadakis CM, Niebuur BJ, Schulte A. Thermoresponsive Polymers under Pressure with a Focus on Poly( N-isopropylacrylamide) (PNIPAM). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:1-20. [PMID: 38149782 DOI: 10.1021/acs.langmuir.3c02398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
Pressure is a key variable in the phase behavior of responsive polymers, both for applications and from a fundamental point of view. In this feature article, we review recent developments, particularly applications of neutron techniques such as small-angle neutron scattering (SANS) and quasi-elastic neutron scattering (QENS), across the temperature-pressure phase diagram. These are complemented by kinetic SANS experiments following pressure jumps. In the prototype system poly(N-isopropylacrylamide) (PNIPAM), QENS revealed the pressure-dependent characteristics of hydration water around the lower critical solution temperature transition. The size, water content, and inner structure of the mesoglobules formed in the two-phase region depend strongly on pressure, as shown by SANS. Beside these changes at the phase transition, the mesoglobule formation at low pressure is determined by kinetic factors, namely the formation of a polymer-rich, rigid shell, which hampers further growth by coalescence. At high pressure, in contrast, the growth proceeds by diffusion-limited coalescence without any kinetic hindrance. The disintegration of the mesoglobules evolves either via chain release from their surface or via swelling, depending on the osmotic pressure of the water. Moreover, we report on the profound influence of pressure on the cononsolvency effect. In the temperature-pressure frame, the one-phase region is hugely expanded upon the addition of the cosolvent methanol. SANS experiments unveil the enthalpic and entropic contributions to the effective Flory-Huggins interaction parameter between the segments and the solvent mixture. QENS experiments demonstrate an increase in polymer associated water with pressure, whereas methanol is released. Correspondingly, the solvent phase becomes enriched in methanol, providing a mechanism for the breakdown of cononsolvency at a high pressure. Finally, we outline future opportunities for high-pressure studies of thermoresponsive polymers, with a focus on neutron methods.
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Affiliation(s)
- Christine M Papadakis
- TUM School of Natural Sciences, Physics Department, Soft Matter Physics Group, Technical University of Munich, James-Franck-Str. 1, 85748 Garching, Germany
| | - Bart-Jan Niebuur
- TUM School of Natural Sciences, Physics Department, Soft Matter Physics Group, Technical University of Munich, James-Franck-Str. 1, 85748 Garching, Germany
| | - Alfons Schulte
- Department of Physics and College of Optics and Photonics, University of Central Florida, 4111 Libra Drive, Orlando, Florida 32816-2385, United States
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3
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Muhunthan P, Li H, Vignat G, Toro ER, Younes K, Sun Y, Sokaras D, Weiss T, Rajkovic I, Osaka T, Inoue I, Song S, Sato T, Zhu D, Fulton JL, Ihme M. A versatile pressure-cell design for studying ultrafast molecular-dynamics in supercritical fluids using coherent multi-pulse x-ray scattering. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2024; 95:013901. [PMID: 38170817 PMCID: PMC10771079 DOI: 10.1063/5.0158497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 11/24/2023] [Indexed: 01/05/2024]
Abstract
Supercritical fluids (SCFs) can be found in a variety of environmental and industrial processes. They exhibit an anomalous thermodynamic behavior, which originates from their fluctuating heterogeneous micro-structure. Characterizing the dynamics of these fluids at high temperature and high pressure with nanometer spatial and picosecond temporal resolution has been very challenging. The advent of hard x-ray free electron lasers has enabled the development of novel multi-pulse ultrafast x-ray scattering techniques, such as x-ray photon correlation spectroscopy (XPCS) and x-ray pump x-ray probe (XPXP). These techniques offer new opportunities for resolving the ultrafast microscopic behavior in SCFs at unprecedented spatiotemporal resolution, unraveling the dynamics of their micro-structure. However, harnessing these capabilities requires a bespoke high-pressure and high-temperature sample system that is optimized to maximize signal intensity and address instrument-specific challenges, such as drift in beamline components, x-ray scattering background, and multi-x-ray-beam overlap. We present a pressure cell compatible with a wide range of SCFs with built-in optical access for XPCS and XPXP and discuss critical aspects of the pressure cell design, with a particular focus on the design optimization for XPCS.
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Affiliation(s)
- Priyanka Muhunthan
- Department of Mechanical Engineering, Stanford University, Stanford, California 94305, USA
| | - Haoyuan Li
- Department of Mechanical Engineering, Stanford University, Stanford, California 94305, USA
| | - Guillaume Vignat
- Department of Mechanical Engineering, Stanford University, Stanford, California 94305, USA
| | - Edna R. Toro
- Department of Mechanical Engineering, Stanford University, Stanford, California 94305, USA
| | - Khaled Younes
- Department of Mechanical Engineering, Stanford University, Stanford, California 94305, USA
| | - Yanwen Sun
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | | | - Thomas Weiss
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Ivan Rajkovic
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Taito Osaka
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Ichiro Inoue
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Sanghoon Song
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Takahiro Sato
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Diling Zhu
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - John L. Fulton
- Chemical and Materials Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99354, USA
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4
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Wolanin J, Giraud J, Morfin I, Rollet AL, Michot L, Plazanet M. Innovative pressure environment combining hydrostatic pressure gradient and mechanical compression for structural investigations of nanoporous soft films. JOURNAL OF SYNCHROTRON RADIATION 2022; 29:1020-1026. [PMID: 35787569 PMCID: PMC9255587 DOI: 10.1107/s1600577522005914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 06/02/2022] [Indexed: 06/15/2023]
Abstract
The development of a new sample environment enabling X-ray scattering measurements at small and large angles under mechanical compression and hydraulic flow is presented. The cell, which is adapted for moderate pressures, includes beryllium windows, and allows applying simultaneously a compressive pressure up to 2.5 kbar in the perpendicular direction to the flow and either a hydrostatic pressure up to 300 bar or a pressure gradient of the same amplitude. The development of high-pressure devices for synchrotron experiments is relevant for many scientific fields in order to unveil details of a material's structure under relevant conditions of stresses. In particular, mechanical constraints coupled to hydrostatic pressure or flow, leading to complex stress tensor and mechanical response, and therefore unexpected deformations (swelling and pore deformation), are poorly addressed. Here, first the design of the environment is described, and then its performance with measurements carried out on a regenerated cellulose membrane is demonstrated.
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Affiliation(s)
- Julie Wolanin
- Univ. Grenoble Alpes, CNRS, LIPhy, 38000 Grenoble, France
| | - Jérôme Giraud
- Univ. Grenoble Alpes, CNRS, LIPhy, 38000 Grenoble, France
| | | | - Anne-Laure Rollet
- Sorbonne Université, CNRS, Laboratoire Physico-chimie des Electrolytes et Nanosystèmes Interfaciaux, PHENIX, F-75005 Paris, France
| | - Laurent Michot
- Sorbonne Université, CNRS, Laboratoire Physico-chimie des Electrolytes et Nanosystèmes Interfaciaux, PHENIX, F-75005 Paris, France
| | - Marie Plazanet
- Univ. Grenoble Alpes, CNRS, LIPhy, 38000 Grenoble, France
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5
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Song J, Pallach R, Frentzel‐Beyme L, Kolodzeiski P, Kieslich G, Vervoorts P, Hobday CL, Henke S. Tuning the High‐Pressure Phase Behaviour of Highly Compressible Zeolitic Imidazolate Frameworks: From Discontinuous to Continuous Pore Closure by Linker Substitution. Angew Chem Int Ed Engl 2022; 61:e202117565. [PMID: 35119185 PMCID: PMC9401003 DOI: 10.1002/anie.202117565] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Indexed: 11/30/2022]
Abstract
The high‐pressure behaviour of flexible zeolitic imidazolate frameworks (ZIFs) of the ZIF‐62 family with the chemical composition M(im)2−x(bim)x is presented (M2+=Zn2+, Co2+; im−=imidazolate; bim−=benzimidazolate, 0.02≤x≤0.37). High‐pressure powder X‐ray diffraction shows that the materials contract reversibly from an open pore (op) to a closed pore (cp) phase under a hydrostatic pressure of up to 4000 bar. Sequentially increasing the bim− fraction (x) reinforces the framework, leading to an increased threshold pressure for the op‐to‐cp phase transition, while the total volume contraction across the transition decreases. Most importantly, the typical discontinuous op‐to‐cp transition (first order) changes to an unusual continuous transition (second order) for x≥0.35. This allows finetuning of the void volume and the pore size of the material continuously by adjusting the pressure, thus opening new possibilities for MOFs in pressure‐switchable devices, membranes, and actuators.
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Affiliation(s)
- Jianbo Song
- Anorganische Materialchemie Fakultät für Chemie & Chemische Biologie Technische Universität Dortmund Otto-Hahn-Straße 6 44227 Dortmund Germany
| | - Roman Pallach
- Anorganische Materialchemie Fakultät für Chemie & Chemische Biologie Technische Universität Dortmund Otto-Hahn-Straße 6 44227 Dortmund Germany
| | - Louis Frentzel‐Beyme
- Anorganische Materialchemie Fakultät für Chemie & Chemische Biologie Technische Universität Dortmund Otto-Hahn-Straße 6 44227 Dortmund Germany
| | - Pascal Kolodzeiski
- Anorganische Materialchemie Fakultät für Chemie & Chemische Biologie Technische Universität Dortmund Otto-Hahn-Straße 6 44227 Dortmund Germany
| | - Gregor Kieslich
- Department of Chemistry Technical University of Munich Lichtenbergstrasse 4 85748 Garching Germany
| | - Pia Vervoorts
- Department of Chemistry Technical University of Munich Lichtenbergstrasse 4 85748 Garching Germany
| | - Claire L. Hobday
- Centre for Science at Extreme Conditions and EaStCHEM School of Chemistry The University of Edinburgh, King's Buildings West Mains Road Edinburgh EH9 3FJ U.K
| | - Sebastian Henke
- Anorganische Materialchemie Fakultät für Chemie & Chemische Biologie Technische Universität Dortmund Otto-Hahn-Straße 6 44227 Dortmund Germany
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6
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Song J, Pallach R, Frentzel-Beyme L, Kolodzeiski P, Kieslich G, Vervoorts P, Hobday CL, Henke S. Tuning the High‐Pressure Phase Behaviour of Highly Compressible Zeolitic Imidazolate Frameworks: From Discontinuous to Continuous Pore Closure by Linker Substitution. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202117565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jianbo Song
- TU Dortmund: Technische Universitat Dortmund Chemistry and Chemical Biology GERMANY
| | - Roman Pallach
- TU Dortmund: Technische Universitat Dortmund Chemistry and Chemical Biology GERMANY
| | - Louis Frentzel-Beyme
- TU Dortmund: Technische Universitat Dortmund Chemistry and Chemical Biology GERMANY
| | - Pascal Kolodzeiski
- TU Dortmund: Technische Universitat Dortmund Chemistry and Chemical Biology GERMANY
| | - Gregor Kieslich
- TU Munchen: Technische Universitat Munchen Chemistry GERMANY
| | - Pia Vervoorts
- TU Munchen: Technische Universitat Munchen Chemistry GERMANY
| | | | - Sebastian Henke
- TU Dortmund: Technische Universitat Dortmund Chemistry and Chemical Biology Otto-Hahn-Straße 6 44227 Dortmund GERMANY
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7
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Gillilan RE. High-pressure SAXS, deep life, and extreme biophysics. Methods Enzymol 2022; 677:323-355. [DOI: 10.1016/bs.mie.2022.08.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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8
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Terrill NJ, Dent AJ, Dobson B, Beale AM, Allen L, Bras W. Past, present and future-sample environments for materials research studies in scattering and spectroscopy; a UK perspective. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2021; 33:483002. [PMID: 34479225 DOI: 10.1088/1361-648x/ac2389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 09/03/2021] [Indexed: 06/13/2023]
Abstract
Small angle x-ray scattering and x-ray absorption fine structure are two techniques that have been employed at synchrotron sources ever since their inception. Over the course of the development of the techniques, the introduction of sample environments for added value experiments has grown dramatically. This article reviews past successes, current developments and an exploration of future possibilities for these two x-ray techniques with an emphasis on the developments in the United Kingdom between 1980-2020.
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Affiliation(s)
| | - Andrew J Dent
- Diamond Light Source, Didcot, Oxfordshire, OX11 0DE, United Kingdom
| | - Barry Dobson
- Sagentia Ltd, Harston Mill, Harston Mill, CB22 7GG, United Kingdom
| | - Andrew M Beale
- Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, United Kingdom
- The Research Complex at Harwell, Rutherford Appleton Laboratory, Harwell Campus, Didcot, Oxfordshire, OX11 0FA, United Kingdom
| | - Lisa Allen
- Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, United Kingdom
- The Research Complex at Harwell, Rutherford Appleton Laboratory, Harwell Campus, Didcot, Oxfordshire, OX11 0FA, United Kingdom
| | - Wim Bras
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, One Bethel Valley Road TN 37831, United States of America
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9
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Yang S, Tyler AII, Ahrné L, Kirkensgaard JJK. Skimmed milk structural dynamics during high hydrostatic pressure processing from in situ SAXS. Food Res Int 2021; 147:110527. [PMID: 34399505 DOI: 10.1016/j.foodres.2021.110527] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 05/27/2021] [Accepted: 06/11/2021] [Indexed: 10/21/2022]
Abstract
Understanding the changes in milk at a nanostructural level during high-pressure (HP) treatment can provide new insights to improve the safety and functionality of dairy products. In this study, modifications of milk nanostructure during HP were studied in situ by small-angle X-ray scattering (SAXS). Skimmed milk was pressurized to 200 or 400 MPa at 25, 40 or 60 °C and held for 5 or 10 min, and the effect of single- and double-HP treatment was also investigated. In most cases, the SAXS patterns of skimmed milk are well fitted with a three-population model: a low-q micellar feature reflecting the overall micelle size (~0.002 Å-1), a small casein cluster contribution at intermediate-q (around 0.01 Å-1) and a high-q (0.08-0.1 Å-1) population of milk protein inhomogeneities. However, at 60 °C a scattering feature of colloidal calcium phosphate (CCP) which is normally only seen with neutron scattering, was observed at 0.035 Å-1. By varying the pressure, temperature, holding and depressurization times, as well as performing cycled pressure treatment, we followed the dynamic structural changes in the skimmed milk protein structure at different length scales, which depending on the processing conditions, were irreversible or reversible within the timescales investigated. Pressure and temperature of the HP process have major effects, not only on size of casein micelles, but also on "protein inhomogeneities" within their internal structure. Under HP, increasing processing time at 200 MPa induced re-association of the micelles, however, the changes in the internal structure were more pressure-dependent than time dependent.
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Affiliation(s)
- Shuailing Yang
- Department of Food Science, University of Copenhagen, DK-1958 Frederiksberg C, Denmark
| | - Arwen I I Tyler
- School of Food Science and Nutrition, University of Leeds, LS2 9JT Leeds, United Kingdom
| | - Lilia Ahrné
- Department of Food Science, University of Copenhagen, DK-1958 Frederiksberg C, Denmark.
| | - Jacob J K Kirkensgaard
- Department of Food Science, University of Copenhagen, DK-1958 Frederiksberg C, Denmark; Niels Bohr Institute, University of Copenhagen, DK-2100 København Ø, Denmark.
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10
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Salvador-Castell M, Golub M, Erwin N, Demé B, Brooks NJ, Winter R, Peters J, Oger PM. Characterisation of a synthetic Archeal membrane reveals a possible new adaptation route to extreme conditions. Commun Biol 2021; 4:653. [PMID: 34079059 PMCID: PMC8172549 DOI: 10.1038/s42003-021-02178-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Accepted: 04/29/2021] [Indexed: 02/04/2023] Open
Abstract
It has been proposed that adaptation to high temperature involved the synthesis of monolayer-forming ether phospholipids. Recently, a novel membrane architecture was proposed to explain the membrane stability in polyextremophiles unable to synthesize such lipids, in which apolar polyisoprenoids populate the bilayer midplane and modify its physico-chemistry, extending its stability domain. Here, we have studied the effect of the apolar polyisoprenoid squalane on a model membrane analogue using neutron diffraction, SAXS and fluorescence spectroscopy. We show that squalane resides inside the bilayer midplane, extends its stability domain, reduces its permeability to protons but increases that of water, and induces a negative curvature in the membrane, allowing the transition to novel non-lamellar phases. This membrane architecture can be transposed to early membranes and could help explain their emergence and temperature tolerance if life originated near hydrothermal vents. Transposed to the archaeal bilayer, this membrane architecture could explain the tolerance to high temperature in hyperthermophiles which grow at temperatures over 100 °C while having a membrane bilayer. The induction of a negative curvature to the membrane could also facilitate crucial cell functions that require high bending membranes.
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Affiliation(s)
| | - Maksym Golub
- Université Grenoble Alpes, CNRS, LiPhy, Grenoble, France
- Institut Laue Langevin, Grenoble, France
| | - Nelli Erwin
- Faculty of Chemistry and Chemical Biology, Technische Universität Dortmund, Dortmund, Germany
| | - Bruno Demé
- Institut Laue Langevin, Grenoble, France
| | | | - Roland Winter
- Faculty of Chemistry and Chemical Biology, Technische Universität Dortmund, Dortmund, Germany
| | - Judith Peters
- Université Grenoble Alpes, CNRS, LiPhy, Grenoble, France.
- Institut Laue Langevin, Grenoble, France.
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11
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Smith AJ, Alcock SG, Davidson LS, Emmins JH, Hiller Bardsley JC, Holloway P, Malfois M, Marshall AR, Pizzey CL, Rogers SE, Shebanova O, Snow T, Sutter JP, Williams EP, Terrill NJ. I22: SAXS/WAXS beamline at Diamond Light Source - an overview of 10 years operation. JOURNAL OF SYNCHROTRON RADIATION 2021; 28:939-947. [PMID: 33950002 PMCID: PMC8127364 DOI: 10.1107/s1600577521002113] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 02/23/2021] [Indexed: 05/04/2023]
Abstract
Beamline I22 at Diamond Light Source is dedicated to the study of soft-matter systems from both biological and materials science. The beamline can operate in the range 3.7 keV to 22 keV for transmission SAXS and 14 keV to 20 keV for microfocus SAXS with beam sizes of 240 µm × 60 µm [full width half-maximum (FWHM) horizontal (H) × vertical (V)] at the sample for the main beamline, and approximately 10 µm × 10 µm for the dedicated microfocusing platform. There is a versatile sample platform for accommodating a range of facilities and user-developed sample environments. The high brilliance of the insertion device source on I22 allows structural investigation of materials under extreme environments (for example, fluid flow at high pressures and temperatures). I22 provides reliable access to millisecond data acquisition timescales, essential to understanding kinetic processes such as protein folding or structural evolution in polymers and colloids.
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Affiliation(s)
- A. J. Smith
- Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, United Kingdom
| | - S. G. Alcock
- Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, United Kingdom
| | - L. S. Davidson
- Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, United Kingdom
| | - J. H. Emmins
- Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, United Kingdom
| | - J. C. Hiller Bardsley
- King’s College London, Guy’s Campus, Great Maze Pond, London SE1 1UL, United Kingdom
| | - P. Holloway
- Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, United Kingdom
| | - M. Malfois
- ALBA Synchrotron, Carrer de la Llum 2-26, 08290 Cerdanyola del Vallès, Barcelona, Spain
| | - A. R. Marshall
- Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, United Kingdom
| | - C. L. Pizzey
- Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, United Kingdom
| | - S. E. Rogers
- ISIS Neutron and Muon Source, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0QX, United Kingdom
| | - O. Shebanova
- Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, United Kingdom
| | - T. Snow
- Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, United Kingdom
| | - J. P. Sutter
- Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, United Kingdom
| | - E. P. Williams
- Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, United Kingdom
| | - N. J. Terrill
- Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, United Kingdom
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12
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Lundin F, Hansen HW, Adrjanowicz K, Frick B, Rauber D, Hempelmann R, Shebanova O, Niss K, Matic A. Pressure and Temperature Dependence of Local Structure and Dynamics in an Ionic Liquid. J Phys Chem B 2021; 125:2719-2728. [PMID: 33656344 PMCID: PMC8034775 DOI: 10.1021/acs.jpcb.1c00147] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
![]()
A detailed understanding
of the local dynamics in ionic liquids
remains an important aspect in the design of new ionic liquids as
advanced functional fluids. Here, we use small-angle X-ray scattering
and quasi-elastic neutron spectroscopy to investigate the local structure
and dynamics in a model ionic liquid as a function of temperature
and pressure, with a particular focus on state points (P,T) where the macroscopic dynamics, i.e., conductivity,
is the same. Our results suggest that the initial step of ion transport
is a confined diffusion process, on the nanosecond timescale, where
the motion is restricted by a cage of nearest neighbors. This process
is invariant considering timescale, geometry, and the participation
ratio, at state points of constant conductivity, i.e., state points
of isoconductivity. The connection to the nearest-neighbor structure
is underlined by the invariance of the peak in the structure factor
corresponding to nearest-neighbor correlations. At shorter timescales,
picoseconds, two localized relaxation processes of the cation can
be observed, which are not directly linked to ion transport. However,
these processes also show invariance at isoconductivity. This points
to that the overall energy landscape in ionic liquids responds in
the same way to density changes and is mainly governed by the nearest-neighbor
interactions.
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Affiliation(s)
- Filippa Lundin
- Department of Physics, Chalmers University of Technology, SE-41296 Göteborg, Sweden
| | - Henriette Wase Hansen
- Department of Physics, Chalmers University of Technology, SE-41296 Göteborg, Sweden.,Glass and Time, IMFUFA, Department of Science and Environment, Roskilde University, P.O. Box 260, DK-4000 Roskilde, Denmark.,Institut Laue-Langevin, 71 Avenue des Martyrs, CS 20156, 38042 Grenoble Cedex 9, France
| | - Karolina Adrjanowicz
- Insitute of Physics, University of Silesia, 75 Pulku Piechoty 1, 41-500 Chorzow, Poland
| | - Bernhard Frick
- Institut Laue-Langevin, 71 Avenue des Martyrs, CS 20156, 38042 Grenoble Cedex 9, France
| | - Daniel Rauber
- Department of Chemistry, Saarland University, 66123 Saarbrücken, Germany
| | - Rolf Hempelmann
- Department of Chemistry, Saarland University, 66123 Saarbrücken, Germany
| | | | - Kristine Niss
- Glass and Time, IMFUFA, Department of Science and Environment, Roskilde University, P.O. Box 260, DK-4000 Roskilde, Denmark
| | - Aleksandar Matic
- Department of Physics, Chalmers University of Technology, SE-41296 Göteborg, Sweden
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13
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Ando N, Barquera B, Bartlett DH, Boyd E, Burnim AA, Byer AS, Colman D, Gillilan RE, Gruebele M, Makhatadze G, Royer CA, Shock E, Wand AJ, Watkins MB. The Molecular Basis for Life in Extreme Environments. Annu Rev Biophys 2021; 50:343-372. [PMID: 33637008 DOI: 10.1146/annurev-biophys-100120-072804] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Sampling and genomic efforts over the past decade have revealed an enormous quantity and diversity of life in Earth's extreme environments. This new knowledge of life on Earth poses the challenge of understandingits molecular basis in such inhospitable conditions, given that such conditions lead to loss of structure and of function in biomolecules from mesophiles. In this review, we discuss the physicochemical properties of extreme environments. We present the state of recent progress in extreme environmental genomics. We then present an overview of our current understanding of the biomolecular adaptation to extreme conditions. As our current and future understanding of biomolecular structure-function relationships in extremophiles requires methodologies adapted to extremes of pressure, temperature, and chemical composition, advances in instrumentation for probing biophysical properties under extreme conditions are presented. Finally, we briefly discuss possible future directions in extreme biophysics.
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Affiliation(s)
- Nozomi Ando
- Department of Chemistry & Chemical Biology, Cornell University, Ithaca, New York 14853, USA.,Department of Chemistry, Princeton University, Princeton, New Jersey 08544, USA
| | - Blanca Barquera
- Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, New York 12180, USA;
| | - Douglas H Bartlett
- Marine Biology Research Division, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093-0202, USA
| | - Eric Boyd
- Department of Microbiology and Immunology, Montana State University, Bozeman, Montana 59717, USA
| | - Audrey A Burnim
- Department of Chemistry & Chemical Biology, Cornell University, Ithaca, New York 14853, USA
| | - Amanda S Byer
- Department of Chemistry & Chemical Biology, Cornell University, Ithaca, New York 14853, USA
| | - Daniel Colman
- Department of Microbiology and Immunology, Montana State University, Bozeman, Montana 59717, USA
| | - Richard E Gillilan
- Center for High Energy X-ray Sciences (CHEXS), Ithaca, New York 14853, USA
| | - Martin Gruebele
- Department of Chemistry, University of Illinois, Urbana-Champaign, Illinois 61801, USA.,Department of Physics, University of Illinois, Urbana-Champaign, Illinois 61801, USA.,Center for Biophysics and Quantitative Biology, University of Illinois, Urbana-Champaign, Illinois 61801, USA
| | - George Makhatadze
- Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, New York 12180, USA;
| | - Catherine A Royer
- Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, New York 12180, USA;
| | - Everett Shock
- GEOPIG, School of Earth & Space Exploration, School of Molecular Sciences, Center for Fundamental and Applied Microbiomics, Arizona State University, Tempe, Arizona 85287, USA
| | - A Joshua Wand
- Department of Biochemistry & Biophysics, Texas A&M University, College Station, Texas 77845, USA.,Department of Chemistry, Texas A&M University, College Station, Texas 77845, USA.,Department of Molecular & Cellular Medicine, Texas A&M University, College Station, Texas 77845, USA
| | - Maxwell B Watkins
- Department of Chemistry & Chemical Biology, Cornell University, Ithaca, New York 14853, USA.,Department of Chemistry, Princeton University, Princeton, New Jersey 08544, USA
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14
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Misuraca L, Demé B, Oger P, Peters J. Alkanes increase the stability of early life membrane models under extreme pressure and temperature conditions. Commun Chem 2021; 4:24. [PMID: 36697785 PMCID: PMC9814696 DOI: 10.1038/s42004-021-00467-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 01/14/2021] [Indexed: 01/31/2023] Open
Abstract
Terrestrial life appeared on our planet within a time window of [4.4-3.5] billion years ago. During that time, it is suggested that the first proto-cellular forms developed in the surrounding of deep-sea hydrothermal vents, oceanic crust fractures that are still present nowadays. However, these environments are characterized by extreme temperature and pressure conditions that question the early membrane compartment's capability to endure a stable structural state. Recent studies proposed an adaptive strategy employed by present-day extremophiles: the use of apolar molecules as structural membrane components in order to tune the bilayer dynamic response when needed. Here we extend this hypothesis on early life protomembrane models, using linear and branched alkanes as apolar stabilizing molecules of prebiotic relevance. The structural ordering and chain dynamics of these systems have been investigated as a function of temperature and pressure. We found that both types of alkanes studied, even the simplest linear ones, impact highly the multilamellar vesicle ordering and chain dynamics. Our data show that alkane-enriched membranes have a lower multilamellar vesicle swelling induced by the temperature increase and are significantly less affected by pressure variation as compared to alkane-free samples, suggesting a possible survival strategy for the first living forms.
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Affiliation(s)
- Loreto Misuraca
- grid.4444.00000 0001 2112 9282Univ. Grenoble Alpes, CNRS, LIPhy, Grenoble, France ,grid.156520.50000 0004 0647 2236Institut Laue - Langevin, Grenoble, France
| | - Bruno Demé
- grid.156520.50000 0004 0647 2236Institut Laue - Langevin, Grenoble, France
| | - Philippe Oger
- grid.7849.20000 0001 2150 7757Univ Lyon, INSA Lyon, CNRS UMR5240, Villeurbanne, France
| | - Judith Peters
- grid.4444.00000 0001 2112 9282Univ. Grenoble Alpes, CNRS, LIPhy, Grenoble, France ,grid.156520.50000 0004 0647 2236Institut Laue - Langevin, Grenoble, France
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15
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Rai DK, Gillilan RE, Huang Q, Miller R, Ting E, Lazarev A, Tate MW, Gruner SM. High-pressure small-angle X-ray scattering cell for biological solutions and soft materials. J Appl Crystallogr 2021; 54:111-122. [PMID: 33841059 PMCID: PMC7941318 DOI: 10.1107/s1600576720014752] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 11/06/2020] [Indexed: 11/10/2022] Open
Abstract
Pressure is a fundamental thermodynamic parameter controlling the behavior of biological macromolecules. Pressure affects protein denaturation, kinetic parameters of enzymes, ligand binding, membrane permeability, ion trans-duction, expression of genetic information, viral infectivity, protein association and aggregation, and chemical processes. In many cases pressure alters the molecular shape. Small-angle X-ray scattering (SAXS) is a primary method to determine the shape and size of macromolecules. However, relatively few SAXS cells described in the literature are suitable for use at high pressures and with biological materials. Described here is a novel high-pressure SAXS sample cell that is suitable for general facility use by prioritization of ease of sample loading, temperature control, mechanical stability and X-ray background minimization. Cell operation at 14 keV is described, providing a q range of 0.01 < q < 0.7 Å-1, pressures of 0-400 MPa and an achievable temperature range of 0-80°C. The high-pressure SAXS cell has recently been commissioned on the ID7A beamline at the Cornell High Energy Synchrotron Source and is available to users on a peer-reviewed proposal basis.
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Affiliation(s)
- Durgesh K. Rai
- Cornell High Energy Synchrotron Source (CHESS), Cornell University, Ithaca, NY 14853, USA
| | - Richard E. Gillilan
- Cornell High Energy Synchrotron Source (CHESS), Cornell University, Ithaca, NY 14853, USA
| | - Qingqiu Huang
- Cornell High Energy Synchrotron Source (CHESS), Cornell University, Ithaca, NY 14853, USA
| | - Robert Miller
- Cornell High Energy Synchrotron Source (CHESS), Cornell University, Ithaca, NY 14853, USA
- Department of Chemistry, Cornell University, Ithaca, NY 14853, USA
| | - Edmund Ting
- Pressure BioSciences Inc., South Easton, MA 02375, USA
| | | | - Mark W. Tate
- Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, NY 14853, USA
| | - Sol M. Gruner
- Cornell High Energy Synchrotron Source (CHESS), Cornell University, Ithaca, NY 14853, USA
- Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, NY 14853, USA
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16
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Vervoorts P, Keupp J, Schneemann A, Hobday CL, Daisenberger D, Fischer RA, Schmid R, Kieslich G. Configurational Entropy Driven High-Pressure Behaviour of a Flexible Metal-Organic Framework (MOF). Angew Chem Int Ed Engl 2021; 60:787-793. [PMID: 32926541 PMCID: PMC7839482 DOI: 10.1002/anie.202011004] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Indexed: 12/27/2022]
Abstract
Flexible metal-organic frameworks (MOFs) show large structural flexibility as a function of temperature or (gas)pressure variation, a fascinating property of high technological and scientific relevance. The targeted design of flexible MOFs demands control over the macroscopic thermodynamics as determined by microscopic chemical interactions and remains an open challenge. Herein we apply high-pressure powder X-ray diffraction and molecular dynamics simulations to gain insight into the microscopic chemical factors that determine the high-pressure macroscopic thermodynamics of two flexible pillared-layer MOFs. For the first time we identify configurational entropy that originates from side-chain modifications of the linker as the key factor determining the thermodynamics in a flexible MOF. The study shows that configurational entropy is an important yet largely overlooked parameter, providing an intriguing perspective of how to chemically access the underlying free energy landscape in MOFs.
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Affiliation(s)
- Pia Vervoorts
- Department of ChemistryTechnical University of MunichLichtenbergstr. 485748GarchingGermany
| | - Julian Keupp
- Computational Materials ChemistryRuhr University BochumUniversitätsstrasse 15044801BochumGermany
| | - Andreas Schneemann
- Inorganic Chemistry ITechnical University DresdenBergstr. 6601069DresdenGermany
| | - Claire L. Hobday
- Centre for Science at Extreme Conditions and EaStCHEM School of ChemistryThe University of EdinburghKings' Buildings West Mains RoadEdinburghEH9 3FDUK
| | - Dominik Daisenberger
- Diamond Light SourceHarwell Science and Innovation CampusDidcotOX11 ODEOxfordshireUK
| | - Roland A. Fischer
- Department of ChemistryTechnical University of MunichLichtenbergstr. 485748GarchingGermany
| | - Rochus Schmid
- Computational Materials ChemistryRuhr University BochumUniversitätsstrasse 15044801BochumGermany
| | - Gregor Kieslich
- Department of ChemistryTechnical University of MunichLichtenbergstr. 485748GarchingGermany
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17
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Le Vay K, Carter BM, Watkins DW, Dora Tang TY, Ting VP, Cölfen H, Rambo RP, Smith AJ, Ross Anderson JL, Perriman AW. Controlling Protein Nanocage Assembly with Hydrostatic Pressure. J Am Chem Soc 2020; 142:20640-20650. [PMID: 33252237 DOI: 10.1021/jacs.0c07285] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Controlling the assembly and disassembly of nanoscale protein cages for the capture and internalization of protein or non-proteinaceous components is fundamentally important to a diverse range of bionanotechnological applications. Here, we study the reversible, pressure-induced dissociation of a natural protein nanocage, E. coli bacterioferritin (Bfr), using synchrotron radiation small-angle X-ray scattering (SAXS) and circular dichroism (CD). We demonstrate that hydrostatic pressures of 450 MPa are sufficient to completely dissociate the Bfr 24-mer into protein dimers, and the reversibility and kinetics of the reassembly process can be controlled by selecting appropriate buffer conditions. We also demonstrate that the heme B prosthetic group present at the subunit dimer interface influences the stability and pressure lability of the cage, despite its location being discrete from the interdimer interface that is key to cage assembly. This indicates a major cage-stabilizing role for heme within this family of ferritins.
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Affiliation(s)
- Kristian Le Vay
- School of Biochemistry, University of Bristol, University Walk, Bristol BS8 1TD, U.K
- Bristol Centre for Functional Nanomaterials, HH Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, U.K
| | - Ben M Carter
- School of Cellular and Molecular Medicine, University of Bristol, University Walk, Bristol BS8 1TD, U.K
| | - Daniel W Watkins
- School of Biochemistry, University of Bristol, University Walk, Bristol BS8 1TD, U.K
| | - T-Y Dora Tang
- School of Biochemistry, University of Bristol, University Walk, Bristol BS8 1TD, U.K
| | - Valeska P Ting
- Bristol Composites Institute (ACCIS), Department of Mechanical Engineering, University of Bristol, Queen's Building, Bristol BS8 1TR, U.K
| | - Helmut Cölfen
- Department of Chemistry, University of Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Robert P Rambo
- Diamond House, Diamond Light Source Ltd., Harwell Science and Innovation Campus, Fermi Ave., Didcot OX11 0DE, U.K
| | - Andrew J Smith
- Diamond House, Diamond Light Source Ltd., Harwell Science and Innovation Campus, Fermi Ave., Didcot OX11 0DE, U.K
| | - J L Ross Anderson
- School of Biochemistry, University of Bristol, University Walk, Bristol BS8 1TD, U.K
- BrisSynBio Synthetic Biology Research Centre, Life Sciences Building, University of Bristol, Tyndall Avenue, Bristol BS8 1TQ, U.K
| | - Adam W Perriman
- School of Cellular and Molecular Medicine, University of Bristol, University Walk, Bristol BS8 1TD, U.K
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18
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Vervoorts P, Keupp J, Schneemann A, Hobday CL, Daisenberger D, Fischer RA, Schmid R, Kieslich G. Configurational Entropy Driven High‐Pressure Behaviour of a Flexible Metal–Organic Framework (MOF). Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202011004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Pia Vervoorts
- Department of Chemistry Technical University of Munich Lichtenbergstr. 4 85748 Garching Germany
| | - Julian Keupp
- Computational Materials Chemistry Ruhr University Bochum Universitätsstrasse 150 44801 Bochum Germany
| | - Andreas Schneemann
- Inorganic Chemistry I Technical University Dresden Bergstr. 66 01069 Dresden Germany
| | - Claire L. Hobday
- Centre for Science at Extreme Conditions and EaStCHEM School of Chemistry The University of Edinburgh Kings' Buildings West Mains Road Edinburgh EH9 3FD UK
| | - Dominik Daisenberger
- Diamond Light Source Harwell Science and Innovation Campus Didcot OX11 ODE Oxfordshire UK
| | - Roland A. Fischer
- Department of Chemistry Technical University of Munich Lichtenbergstr. 4 85748 Garching Germany
| | - Rochus Schmid
- Computational Materials Chemistry Ruhr University Bochum Universitätsstrasse 150 44801 Bochum Germany
| | - Gregor Kieslich
- Department of Chemistry Technical University of Munich Lichtenbergstr. 4 85748 Garching Germany
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19
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Fox LJ, Matthews L, Stockdale H, Pichai S, Snow T, Richardson RM, Briscoe WH. Structural changes in lipid mesophases due to intercalation of dendritic polymer nanoparticles: Swollen lamellae, suppressed curvature, and augmented structural disorder. Acta Biomater 2020; 104:198-209. [PMID: 31904557 DOI: 10.1016/j.actbio.2019.12.036] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 12/21/2019] [Accepted: 12/30/2019] [Indexed: 12/19/2022]
Abstract
Understanding interactions between nanoparticles and model membranes is relevant to functional nano-composites and the fundamentals of nanotoxicity. In this study, the effect of polyamidoamine (PAMAM) dendrimers as model nanoparticles (NP) on the mesophase behaviour of 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphoethanolamine (POPE) has been investigated using high-pressure small-angle X-ray scattering (HP-SAXS). The pressure-temperature (p-T) diagrams for POPE mesophases in excess water were obtained in the absence and presence of G2 and G4 polyamidoamine (PAMAM) dendrimers (29 Å and 45 Å in diameter, respectively) at varying NP-lipid number ratio (ν = 0.0002-0.02) over the pressure range p = 1-3000 bar and temperature range T = 20-80 °C. The p-T phase diagram of POPE exhibited the Lβ, Lα and HII phases. Complete analysis of the phase diagrams, including the relative area pervaded by different phases, phase transition temperatures (Tt) and pressures (pt), the lattice parameters (d-spacing), the pressure-dependence of d-spacing (Δd/Δp), and the structural ordering in the mesophase as gauged by the Scherrer coherence length (L) permitted insights into the size- and concentration-dependent interactions between the dendrimers and the model membrane system. The addition of dendrimers changed the phase transition pressure and temperature and resulted in the emergence of highly swollen lamellar phases, dubbed Lβ-den and Lα-den. G4 PAMAM dendrimers at the highest concentration ν = 0.02 suppressed the formation of the HII phase within the temperature range studied, whereas the addition of G2 PAMAM dendrimers at the same concentration promoted an extended mixed lamellar region in which Lα and Lβ phases coexisted. STATEMENT OF SIGNIFICANCE: Using high pressure small angle X-ray scattering in the pressure range 1-3000 bar and temperature range 20-60 °C, we have studied interactions between PAMAM dendrimers (as model nanoparticles) and POPE lipid mesophases (as model membranes). We report the pressure-temperature phase diagrams for the dendrimer-lipid mesophases for the first time. We find that the dendrimers alter the phase transition temperatures (Tt) and pressures (pt), the lattice parameters (d-spacing), and the structural order in the mesophase. We interpret these unprecedented results in terms of the fluidity of the lipid membranes and the interactions between the dendrimers and the membranes. Our findings are of fundamental relevance to the field of nanotoxicity and functional nanomaterials that integrate nanoparticles and organized lipid structures.
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20
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Hansen HW, Lundin F, Adrjanowicz K, Frick B, Matic A, Niss K. Density scaling of structure and dynamics of an ionic liquid. Phys Chem Chem Phys 2020; 22:14169-14176. [DOI: 10.1039/d0cp01258k] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The lines in the pressure–temperature phase diagram with constant conductivity are found to be lines where other dynamic variables as well as the molecular structure factor peak are constant, while charge ordering changes.
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Affiliation(s)
- Henriette Wase Hansen
- Glass and Time
- IMFUFA
- Department of Science and Environment
- Roskilde University
- DK-4000 Roskilde
| | - Filippa Lundin
- Materials Physics
- Department of Physics
- Chalmers University of Technology
- Gothenburg
- Sweden
| | | | | | - Aleksandar Matic
- Materials Physics
- Department of Physics
- Chalmers University of Technology
- Gothenburg
- Sweden
| | - Kristine Niss
- Glass and Time
- IMFUFA
- Department of Science and Environment
- Roskilde University
- DK-4000 Roskilde
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21
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Salvador-Castell M, Brooks NJ, Peters J, Oger P. Induction of non-lamellar phases in archaeal lipids at high temperature and high hydrostatic pressure by apolar polyisoprenoids. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2019; 1862:183130. [PMID: 31734311 DOI: 10.1016/j.bbamem.2019.183130] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 11/11/2019] [Accepted: 11/12/2019] [Indexed: 12/01/2022]
Abstract
It is now well established that cell membranes are much more than a barrier that separate the cytoplasm from the outside world. Regarding membrane's lipids and their self-assembling, the system is highly complex, for example, the cell membrane needs to adopt different curvatures to be functional. This is possible thanks to the presence of non-lamellar-forming lipids, which tend to curve the membrane. Here, we present the effect of squalane, an apolar isoprenoid molecule, on an archaea-like lipid membrane. The presence of this molecule provokes negative membrane curvature and forces lipids to self-assemble under inverted cubic and inverted hexagonal phases. Such non-lamellar phases are highly stable under a broad range of external extreme conditions, e.g. temperatures and high hydrostatic pressures, confirming that such apolar lipids could be included in the architecture of membranes arising from cells living under extreme environments.
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Affiliation(s)
| | - Nicholas J Brooks
- Imperial College London, South Kensington Campus, London SW7 2AZ, England, United Kingdom of Great Britain and Northern Ireland
| | - Judith Peters
- Université Grenoble Alpes, LiPhy, CNRS, 38000 Grenoble, France; Institut Laue Langevin, 38000 Grenoble, France
| | - Philippe Oger
- Université de Lyon, INSA de Lyon, CNRS, UMR 5240, 69211 Villeurbanne, France.
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22
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Lehmkühler F, Schroer MA, Markmann V, Frenzel L, Möller J, Lange H, Grübel G, Schulz F. Kinetics of pressure-induced nanocrystal superlattice formation. Phys Chem Chem Phys 2019; 21:21349-21354. [PMID: 31531471 DOI: 10.1039/c9cp04658e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Colloidal nanocrystals (NC) are known to self-organize into superlattices that promise many applications ranging from medicine to optoelectronics. Recently, the formation of high-quality PEGylated gold NC was reported at high hydrostatic pressure and high salt concentrations. Here, we study the formation kinetics of these superlattices after pressure jumps beyond their crystallisation pressure by means of small-angle X-ray scattering with few ms experimental resolution. The timescale of NC formation was found to be reduced the larger the width of the pressure jump. This is connected to an increase of crystal quality, i.e., the faster the NC superlattice forms, the better the crystal quality. In contrast to the formation kinetics, the melting of the NC superlattice is approximately one order of magnitude slower and shows linear kinetics.
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Affiliation(s)
- Felix Lehmkühler
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany. and The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - Martin A Schroer
- European Molecular Biology Laboratory EMBL c/o DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - Verena Markmann
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany.
| | - Lara Frenzel
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany. and The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany
| | | | - Holger Lange
- The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany and Institute of Physical Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany
| | - Gerhard Grübel
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany. and The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - Florian Schulz
- The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany and Institute of Physical Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany
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23
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Niebuur BJ, Chiappisi L, Jung F, Zhang X, Schulte A, Papadakis CM. Kinetics of Mesoglobule Formation and Growth in Aqueous Poly(N-isopropylacrylamide) Solutions: Pressure Jumps at Low and at High Pressure. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00937] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Bart-Jan Niebuur
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
| | - Leonardo Chiappisi
- Large Scale Structures Group, Institut Laue-Langevin, 71, Avenue des Martyrs, 38042 Grenoble, France
- Stranski Laboratorium für Physikalische und Theoretische Chemie, Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 124, Sekr. TC7, D-10623 Berlin, Germany
| | - Florian Jung
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
| | - Xiaohan Zhang
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
| | - Alfons Schulte
- Department of Physics and College of Optics and Photonics, University of Central Florida, 4111 Libra Drive, Orlando, Florida 32816-2385, United States
| | - Christine M. Papadakis
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
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24
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Vervoorts P, Hobday CL, Ehrenreich MG, Daisenberger D, Kieslich G. The Zeolitic Imidazolate Framework ZIF-4 under Low Hydrostatic Pressures. Z Anorg Allg Chem 2019. [DOI: 10.1002/zaac.201900046] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Pia Vervoorts
- Department of Chemistry; Technical University of Munich; Lichtenbergstrasse 4 85748 Garching Germany
| | - Claire L. Hobday
- Centre for Science at Extreme Conditions and EaStCHEM School of Chemistry; The University of Edinburgh, Kings' Buildings; West Mains Road EH9 3FD Edinburgh United Kingdom
| | - Michael G. Ehrenreich
- Department of Chemistry; Technical University of Munich; Lichtenbergstrasse 4 85748 Garching Germany
| | - Dominik Daisenberger
- Diamond Light Source, Diamond House; Harwell Science and Innovation Campus; OX11 ODE Didcot Oxfordshire United Kingdom
| | - Gregor Kieslich
- Department of Chemistry; Technical University of Munich; Lichtenbergstrasse 4 85748 Garching Germany
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25
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Hata H, Nishiyama M, Kitao A. Molecular dynamics simulation of proteins under high pressure: Structure, function and thermodynamics. Biochim Biophys Acta Gen Subj 2019; 1864:129395. [PMID: 31302180 DOI: 10.1016/j.bbagen.2019.07.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 07/03/2019] [Accepted: 07/08/2019] [Indexed: 12/17/2022]
Abstract
BACKGROUND Molecular dynamics (MD) simulation is well-recognized as a powerful tool to investigate protein structure, function, and thermodynamics. MD simulation is also used to investigate high pressure effects on proteins. For conducting better MD simulation under high pressure, the main issues to be addressed are: (i) protein force fields and water models were originally developed to reproduce experimental properties obtained at ambient pressure; and (ii) the timescale to observe the pressure effect is often much longer than that of conventional MD simulations. SCOPE OF REVIEW First, we describe recent developments in MD simulation methodologies for studying the high-pressure structure and dynamics of protein molecules. These developments include force fields for proteins and water molecules, and enhanced simulation techniques. Then, we summarize recent studies of MD simulations of proteins in water under high pressure. MAJOR CONCLUSIONS Recent MD simulations of proteins in solution under pressure have reproduced various phenomena identified by experiments using high pressure, such as hydration, water penetration, conformational change, helix stabilization, and molecular stiffening. GENERAL SIGNIFICANCE MD simulations demonstrate differences in the properties of proteins and water molecules between ambient and high-pressure conditions. Comparing the results obtained by MD calculations with those obtained experimentally could reveal the mechanism by which biological molecular machines work well in collaboration with water molecules.
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Affiliation(s)
- Hiroaki Hata
- School of Life Science and Technology, Tokyo Institute of Technology, Ookayama, 2-12-1 Meguro-ku, Tokyo 152-8550, Japan
| | - Masayoshi Nishiyama
- Department of Physics, Kindai University, 3-4-1 Kowakae, Higashiosaka, Osaka 577-8502, Japan
| | - Akio Kitao
- School of Life Science and Technology, Tokyo Institute of Technology, Ookayama, 2-12-1 Meguro-ku, Tokyo 152-8550, Japan.
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26
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Schneidereit D, Schürmann S, Friedrich O. PiezoGRIN: A High-Pressure Chamber Incorporating GRIN Lenses for High-Resolution 3D-Microscopy of living Cells and Tissues. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1801453. [PMID: 30828527 PMCID: PMC6382305 DOI: 10.1002/advs.201801453] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 10/15/2018] [Indexed: 05/30/2023]
Abstract
A high-pressure optical chamber, PiezoGRIN, that facilitates label-free 3D high-resolution live-cell multiphoton microscopy in thick tissue samples is presented. A set of two Gradient Index (GRIN) rod lenses is integrated into the chamber as an optical guide and allows for the adjustment of the focal plane through the sample providing a field of view volume of 450 × 450 × 500 µm (x, y, z). An optical lateral resolution of 0.8 µm is achieved by using two-photon excitation with 150 fs pulses of a 810 nm titanium-sapphire laser at hydrostatic pressures up to 200 MPa. With the PiezoGRIN setup, it is possible to follow pressure-induced changes in subcellular structure of unstained vital mouse skeletal muscle tissue up to 200 µm below the tissue surface.
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Affiliation(s)
- Dominik Schneidereit
- Institute of Medical BiotechnologyFriedrich‐Alexander University Erlangen‐NürnbergPaul‐Gordan Strasse 3Erlangen91052Germany
- Erlangen Graduate School in Advanced Optical Technologies (SAOT)Friedrich‐Alexander‐University Erlangen‐NürnbergErlangen91052Germany
| | - Sebastian Schürmann
- Institute of Medical BiotechnologyFriedrich‐Alexander University Erlangen‐NürnbergPaul‐Gordan Strasse 3Erlangen91052Germany
- Erlangen Graduate School in Advanced Optical Technologies (SAOT)Friedrich‐Alexander‐University Erlangen‐NürnbergErlangen91052Germany
| | - Oliver Friedrich
- Institute of Medical BiotechnologyFriedrich‐Alexander University Erlangen‐NürnbergPaul‐Gordan Strasse 3Erlangen91052Germany
- Erlangen Graduate School in Advanced Optical Technologies (SAOT)Friedrich‐Alexander‐University Erlangen‐NürnbergErlangen91052Germany
- Muscle Research Center Erlangen (MURCE)Paul‐Gordan Strasse 3Erlangen91052Germany
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27
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Gao M, Berghaus M, Möbitz S, Schuabb V, Erwin N, Herzog M, Julius K, Sternemann C, Winter R. On the Origin of Microtubules' High-Pressure Sensitivity. Biophys J 2019. [PMID: 29539395 DOI: 10.1016/j.bpj.2018.01.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
For over 50 years, it has been known that the mitosis of eukaryotic cells is inhibited already at high hydrostatic pressure conditions of 30 MPa. This effect has been attributed to the disorganization of microtubules, the main component of the spindle apparatus. However, the structural details of the depolymerization and the origin of the pressure sensitivity have remained elusive. It has also been a puzzle how complex organisms could still successfully inhabit extreme high-pressure environments such as those encountered in the depth of oceans. We studied the pressure stability of microtubules at different structural levels and for distinct dynamic states using high-pressure Fourier-transform infrared spectroscopy and Synchrotron small-angle x-ray scattering. We show that microtubules are hardly stable under abyssal conditions, where pressures up to 100 MPa are reached. This high-pressure sensitivity can be mainly attributed to the internal voids and packing defects in the microtubules. In particular, we show that lateral and longitudinal contacts feature different pressure stabilities, and they define also the pressure stability of tubulin bundles. The intactness of both contact types is necessary for the functionality of microtubules in vivo. Despite being known to dynamically stabilize microtubules and prevent their depolymerization, we found that the anti-cancer drug taxol and the accessory protein MAP2c decrease the pressure stability of microtubule protofilaments. Moreover, we demonstrate that the cellular environment itself is a crowded place and accessory proteins can increase the pressure stability of microtubules and accelerate their otherwise highly pressure-sensitive de novo formation.
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Affiliation(s)
- Mimi Gao
- Physical Chemistry I - Biophysical Chemistry, Faculty of Chemistry and Chemical Biology
| | - Melanie Berghaus
- Physical Chemistry I - Biophysical Chemistry, Faculty of Chemistry and Chemical Biology
| | - Simone Möbitz
- Physical Chemistry I - Biophysical Chemistry, Faculty of Chemistry and Chemical Biology
| | - Vitor Schuabb
- Physical Chemistry I - Biophysical Chemistry, Faculty of Chemistry and Chemical Biology
| | - Nelli Erwin
- Physical Chemistry I - Biophysical Chemistry, Faculty of Chemistry and Chemical Biology
| | - Marius Herzog
- Physical Chemistry I - Biophysical Chemistry, Faculty of Chemistry and Chemical Biology
| | - Karin Julius
- Fakultät Physik/DELTA, Technische Universität Dortmund, Dortmund, Germany
| | | | - Roland Winter
- Physical Chemistry I - Biophysical Chemistry, Faculty of Chemistry and Chemical Biology.
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28
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Dissegna S, Vervoorts P, Hobday CL, Düren T, Daisenberger D, Smith AJ, Fischer RA, Kieslich G. Tuning the Mechanical Response of Metal–Organic Frameworks by Defect Engineering. J Am Chem Soc 2018; 140:11581-11584. [DOI: 10.1021/jacs.8b07098] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Stefano Dissegna
- Chair of Inorganic and Metal−Organic Chemistry, Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Pia Vervoorts
- Chair of Inorganic and Metal−Organic Chemistry, Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Claire L. Hobday
- Centre for Advanced Separations Engineering, Department of Chemical Engineering, University of Bath, Bath BA2 7AY, United Kingdom
| | - Tina Düren
- Centre for Advanced Separations Engineering, Department of Chemical Engineering, University of Bath, Bath BA2 7AY, United Kingdom
| | - Dominik Daisenberger
- Diamond Light Source, Diamond House, Harwell Science and Innovation Campus, Didcot, OX11 ODE Oxfordshire, United Kingdom
| | - Andrew J. Smith
- Diamond Light Source, Diamond House, Harwell Science and Innovation Campus, Didcot, OX11 ODE Oxfordshire, United Kingdom
| | - Roland A. Fischer
- Chair of Inorganic and Metal−Organic Chemistry, Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Gregor Kieslich
- Chair of Inorganic and Metal−Organic Chemistry, Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
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29
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A combined X-ray scattering and simulation study of halothane in membranes at raised pressures. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2016.12.041] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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30
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Möller J, Léonardon J, Gorini J, Dattani R, Narayanan T. A sub-ms pressure jump setup for time-resolved X-ray scattering. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2016; 87:125116. [PMID: 28040915 DOI: 10.1063/1.4972296] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We present a new experimental setup for time-resolved solution small-angle X-ray scattering (SAXS) studies of kinetic processes induced by sub-ms hydrostatic pressure jumps. It is based on a high-force piezo-stack actuator, with which the volume of the sample can be dynamically compressed. The presented setup has been designed and optimized for SAXS experiments with absolute pressures of up to 1000 bars, using transparent diamond windows and an easy-to-change sample capillary. The pressure in the cell can be changed in less than 1 ms, which is about an order of magnitude faster jump than previously obtained by dynamic pressure setups for SAXS. An additional temperature control offers the possibility for automated mapping of p-T phase diagrams. Here we present the technical specifications and first experimental data taken together with a preview of new research opportunities enabled by this setup.
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31
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Beddoes CM, Berge J, Bartenstein JE, Lange K, Smith AJ, Heenan RK, Briscoe WH. Hydrophilic nanoparticles stabilising mesophase curvature at low concentration but disrupting mesophase order at higher concentrations. SOFT MATTER 2016; 12:6049-6057. [PMID: 27340807 DOI: 10.1039/c6sm00393a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Using high pressure small angle X-ray scattering (HP-SAXS), we have studied monoolein (MO) mesophases at 18 wt% hydration in the presence of 10 nm silica nanoparticles (NPs) at NP-lipid number ratios (ν) of 1 × 10(-6), 1 × 10(-5) and 1 × 10(-4) over the pressure range 1-2700 bar and temperature range 20-60 °C. In the absence of the silica NPs, the pressure-temperature (p-T) phase diagram of monoolein exhibited inverse bicontinuous cubic gyroid (Q), lamellar alpha (Lα), and lamellar crystalline (Lc) phases. The addition of the NPs significantly altered the p-T phase diagram, changing the pressure (p) and the temperature (T) at which the transitions between these mesophases occurred. In particular, a strong NP concentration effect on the mesophase behaviour was observed. At low NP concentration, the p-T region pervaded by the Q phase and the Lα-Q mixture increased, and we attribute this behaviour to the NPs forming clusters at the mesophase domain boundaries, encouraging transition to the mesophase with a higher curvature. At high NP concentrations, the Q phase was no longer observed in the p-T phase diagram. Instead, it was dominated by the lamellar (L) phases until the transition to a fluid isotropic (FI) phase at 60 °C at low pressure. We speculate that NPs formed aggregates with a "chain of pearls" structure at the mesophase domain boundaries, hindering transitions to the mesophases with higher curvatures. These observations were supported by small angle neutron scattering (SANS) and scanning electron microscopy (SEM). Our results have implications to nanocomposite materials and nanoparticle cellular entry where the interactions between NPs and organised lipid structures are an important consideration.
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Affiliation(s)
- Charlotte M Beddoes
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK. and Bristol Centre for Functional Nanomaterials, Centre for Nanoscience and Quantum Information, Tyndall Avenue, Bristol BS8 1FD, UK
| | - Johanna Berge
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK.
| | - Julia E Bartenstein
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK.
| | - Kathrin Lange
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK.
| | - Andrew J Smith
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0QX, UK
| | | | - Wuge H Briscoe
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK.
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32
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Combined pressure and temperature denaturation of ribonuclease A produces alternate denatured states. Biochem Biophys Res Commun 2016; 473:834-839. [DOI: 10.1016/j.bbrc.2016.03.135] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 03/29/2016] [Indexed: 01/12/2023]
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33
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McCarthy NLC, Ces O, Law RV, Seddon JM, Brooks NJ. Separation of liquid domains in model membranes induced with high hydrostatic pressure. Chem Commun (Camb) 2016; 51:8675-8. [PMID: 25907808 DOI: 10.1039/c5cc02134k] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have imaged the formation of membrane microdomains immediately after their induction using a novel technology platform coupling high hydrostatic pressure to fluorescence microscopy. After formation, the ordered domains are small and highly dynamic. This will enhance links between model lipid assemblies and dynamic processes in cellular membranes.
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Affiliation(s)
- Nicola L C McCarthy
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, UK.
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34
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McCarthy N, Brooks N. Using High Pressure to Modulate Lateral Structuring in Model Lipid Membranes. ADVANCES IN BIOMEMBRANES AND LIPID SELF-ASSEMBLY 2016. [DOI: 10.1016/bs.abl.2016.04.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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35
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Barriga HMG, Law RV, Seddon JM, Ces O, Brooks NJ. The effect of hydrostatic pressure on model membrane domain composition and lateral compressibility. Phys Chem Chem Phys 2016; 18:149-55. [DOI: 10.1039/c5cp04239a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We distinguish the liquid ordered and liquid disordered phases in diffraction patterns of biphasic mixtures, comparing their lateral compressibility and report the variations in the two phase region with increasing hydrostatic pressure.
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Affiliation(s)
| | - R. V. Law
- Department of Chemistry
- Imperial College London
- UK
| | - J. M. Seddon
- Department of Chemistry
- Imperial College London
- UK
| | - O. Ces
- Department of Chemistry
- Imperial College London
- UK
| | - N. J. Brooks
- Department of Chemistry
- Imperial College London
- UK
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36
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Bulpett JM, Snow T, Quignon B, Beddoes CM, Tang TYD, Mann S, Shebanova O, Pizzey CL, Terrill NJ, Davis SA, Briscoe WH. Hydrophobic nanoparticles promote lamellar to inverted hexagonal transition in phospholipid mesophases. SOFT MATTER 2015; 11:8789-8800. [PMID: 26391613 DOI: 10.1039/c5sm01705j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
This study focuses on how the mesophase transition behaviour of the phospholipid dioleoyl phosphatidylethanolamine (DOPE) is altered by the presence of 10 nm hydrophobic and 14 nm hydrophilic silica nanoparticles (NPs) at different concentrations. The lamellar to inverted hexagonal phase transition (Lα-HII) of phospholipids is energetically analogous to the membrane fusion process, therefore understanding the Lα-HII transition with nanoparticulate additives is relevant to how membrane fusion may be affected by these additives, in this case the silica NPs. The overriding observation is that the HII/Lα boundaries in the DOPE p-T phase diagram were shifted by the presence of NPs: the hydrophobic NPs enlarged the HII phase region and thus encouraged the inverted hexagonal (HII) phase to occur at lower temperatures, whilst hydrophilic NPs appeared to stabilise the Lα phase region. This effect was also NP-concentration dependent, with a more pronounced effect for higher concentration of the hydrophobic NPs, but the trend was less clear cut for the hydrophilic NPs. There was no evidence that the NPs were intercalated into the mesophases, and as such it was likely that they might have undergone microphase separation and resided at the mesophase domain boundaries. Whilst the loci and exact roles of the NPs invite further investigation, we tentatively discuss these results in terms of both the surface chemistry of the NPs and the effect of their curvature on the elastic bending energy considerations during the mesophase transition.
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Affiliation(s)
- Jennifer M Bulpett
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK.
| | - Tim Snow
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK.
| | - Benoit Quignon
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK.
| | - Charlotte M Beddoes
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK.
| | - T-Y D Tang
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK.
| | - Stephen Mann
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK.
| | - Olga Shebanova
- Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot, OX11 0DE, UK
| | - Claire L Pizzey
- Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot, OX11 0DE, UK
| | - Nicholas J Terrill
- Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot, OX11 0DE, UK
| | - Sean A Davis
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK.
| | - Wuge H Briscoe
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK.
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37
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Purushothaman S, Cicuta P, Ces O, Brooks NJ. Influence of High Pressure on the Bending Rigidity of Model Membranes. J Phys Chem B 2015; 119:9805-10. [DOI: 10.1021/acs.jpcb.5b05272] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Sowmya Purushothaman
- Department
of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Pietro Cicuta
- Cavendish
Laboratory, University of Cambridge, Cambridge CB3 0HE, U.K
| | - Oscar Ces
- Department
of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Nicholas J. Brooks
- Department
of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
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38
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Barriga HMG, Parsons ES, McCarthy NLC, Ces O, Seddon JM, Law RV, Brooks NJ. Pressure-temperature phase behavior of mixtures of natural sphingomyelin and ceramide extracts. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:3678-3686. [PMID: 25742392 DOI: 10.1021/la504935c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Ceramides are a group of sphingolipids that act as highly important signaling molecules in a variety of cellular processes including differentiation and apoptosis. The predominant in vivo synthetic pathway for ceramide formation is via sphingomyelinase catalyzed hydrolysis of sphingomyelin. The biochemistry of this essential pathway has been studied in detail; however, there is currently a lack of information on the structural behavior of sphingomyelin- and ceramide-rich model membrane systems, which is essential for developing a bottom-up understanding of ceramide signaling and platform formation. We have studied the lyotropic phase behavior of sphingomyelin-ceramide mixtures in excess water as a function of temperature (30-70 °C) and pressure (1-200 MPa) by small- and wide-angle X-ray scattering. At low ceramide concentrations the mixtures form the ripple gel phase (P(β)') below the gel transition temperature for sphingomyelin, and this observation has been confirmed by atomic force microscopy. Formation of the ripple gel phase can also be induced at higher temperatures via the application of hydrostatic pressure. At high ceramide concentration an inverse hexagonal phase (HII) is formed coexisting with a cubic phase.
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Affiliation(s)
- Hanna M G Barriga
- Department of Chemistry, Imperial College London, South Kensington, London, SW7 2AZ, United Kingdom
| | - Edward S Parsons
- Department of Chemistry, Imperial College London, South Kensington, London, SW7 2AZ, United Kingdom
| | - Nicola L C McCarthy
- Department of Chemistry, Imperial College London, South Kensington, London, SW7 2AZ, United Kingdom
| | - Oscar Ces
- Department of Chemistry, Imperial College London, South Kensington, London, SW7 2AZ, United Kingdom
| | - John M Seddon
- Department of Chemistry, Imperial College London, South Kensington, London, SW7 2AZ, United Kingdom
| | - Robert V Law
- Department of Chemistry, Imperial College London, South Kensington, London, SW7 2AZ, United Kingdom
| | - Nicholas J Brooks
- Department of Chemistry, Imperial College London, South Kensington, London, SW7 2AZ, United Kingdom
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39
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Tang TYD, Brooks NJ, Ces O, Seddon JM, Templer RH. Structural studies of the lamellar to bicontinuous gyroid cubic (Q(G)(II)) phase transitions under limited hydration conditions. SOFT MATTER 2015; 11:1991-1997. [PMID: 25626161 DOI: 10.1039/c4sm02724h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Non-equilibrium pathways of lyotropic phase transitions such as the lamellar to inverse bicontinuous cubic phase transition are important dynamical processes resembling cellular fusion and fission processes which can be exploited in biotechnological processes such as drug delivery. However, utilising and optimising these structural transformations for applications require a detailed understanding of the energetic pathways which drive the phase transition. We have used the high pressure X-ray diffraction technique to probe the lamellar to Q(G)(II) phase transition in limited hydration monolinolein on the millisecond time scale. Our results show that the phase transition goes via a structural intermediate and once the Q(G)(II) phase initially forms the elastic energy in the bilayer drives this structure to its equilibrium lattice parameter.
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Affiliation(s)
- T-Y Dora Tang
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK.
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40
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Barriga HMG, Tyler AII, McCarthy NLC, Parsons ES, Ces O, Law RV, Seddon JM, Brooks NJ. Temperature and pressure tuneable swollen bicontinuous cubic phases approaching nature's length scales. SOFT MATTER 2015; 11:600-607. [PMID: 25430049 DOI: 10.1039/c4sm02343a] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Bicontinuous cubic structures offer enormous potential in applications ranging from protein crystallisation to drug delivery systems and have been observed in cellular membrane structures. One of the current bottlenecks in understanding and exploiting these structures is that cubic scaffolds produced in vitro are considerably smaller in size than those observed in biological systems, differing by almost an order of magnitude in some cases. We have addressed this technological bottleneck and developed a methodology capable of manufacturing highly swollen bicontinuous cubic membranes with length scales approaching those seen in vivo. Crucially, these cubic systems do not require the presence of proteins. We have generated highly swollen Im3m symmetry bicontinuous cubic phases with lattice parameters of up to 480 Å, composed of ternary mixtures of monoolein, cholesterol and negatively charged lipid (DOPS or DOPG) and we have been able to tune their lattice parameters. The swollen cubic phases are highly sensitive to both temperature and pressure; these structural changes are likely to be controlled by a fine balance between lipid headgroup repulsions and lateral pressure in the hydrocarbon chain region.
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Affiliation(s)
- H M G Barriga
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, UK.
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41
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Fujisawa T. High Pressure Small-Angle X-Ray Scattering. Subcell Biochem 2015; 72:663-675. [PMID: 26174403 DOI: 10.1007/978-94-017-9918-8_30] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Small-angle scattering, solution scattering from proteins in solution, reflects the shape of the scatter as a spread of electron density, which is common to protein crystallography. Although the obtained resolution of small-angle scattering is inferior to that of crystallography, it shows the global image of protein structure in solution without constraints of neighboring molecules in crystal lattice. At ambient pressure, data collection technology and analyses of small-angle scattering method developed so greatly in recent 10 years that it is recognized as one of the powerful method of structural biology. In parallel, many efforts have been made to apply this technique under high pressure. The instrumentation and interpretation of small-angle scattering under pressure, however, requires special considerations. The present chapter reviews the technological aspect of scattering from protein solution especially optimized for synchrotron X-ray sources.
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Affiliation(s)
- Tetsuro Fujisawa
- Department of Chemistry and Biomolecular Science, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan,
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42
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Abstract
In this chapter the use of X-ray diffraction to study the structure of lyotropic phases and lipid model membranes is described. Determination of the phase symmetry and lattice parameters from small-angle X-ray scattering (SAXS), and of the nature of the hydrocarbon chain packing from wide-angle X-ray scattering (WAXS), are discussed. Methods by which the sign of the interfacial curvature of non-lamellar phases may be determined are then presented. Finally, the calculation of electron density profiles from the intensities of the observed Bragg peaks is described, for the lamellar phase and for the inverse hexagonal phase.
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Affiliation(s)
- Arwen I I Tyler
- Department of Chemistry, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK,
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43
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Abstract
Movement is a fundamental characteristic of all living things. This biogenic function is carried out by various nanometer-sized molecular machines. Molecular motor is a typical molecular machinery in which the characteristic features of proteins are integrated; these include enzymatic activity, energy conversion, molecular recognition and self-assembly. These biologically important reactions occur with the association of water molecules that surround the motors. Applied pressures can alter the intermolecular interactions between the motors and water. In this chapter we describe the development of a high-pressure microscope and a new motility assay that enables the visualization of the motility of molecular motors under conditions of high-pressure. Our results demonstrate that applied pressure dynamically changes the motility of molecular motors such as kinesin, F1-ATPase and bacterial flagellar motors.
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Affiliation(s)
- Masayoshi Nishiyama
- The Hakubi Center for Advanced Research/Institute for Integrated Cell-Material Sciences, Kyoto University, Kyoto, 606-8501, Japan,
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44
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Grobelny S, Erlkamp M, Möller J, Tolan M, Winter R. Intermolecular interactions in highly concentrated protein solutions upon compression and the role of the solvent. J Chem Phys 2014; 141:22D506. [DOI: 10.1063/1.4895542] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Affiliation(s)
- S. Grobelny
- Faculty of Chemistry, Physical Chemistry-Biophysical Chemistry, TU Dortmund, Otto-Hahn Str. 6, 44227 Dortmund, Germany
| | - M. Erlkamp
- Faculty of Chemistry, Physical Chemistry-Biophysical Chemistry, TU Dortmund, Otto-Hahn Str. 6, 44227 Dortmund, Germany
| | - J. Möller
- Fakultät Physik/DELTA, TU Dortmund, Maria-Goeppert-Mayer-Str. 2, 44227 Dortmund, Germany
| | - M. Tolan
- Fakultät Physik/DELTA, TU Dortmund, Maria-Goeppert-Mayer-Str. 2, 44227 Dortmund, Germany
| | - R. Winter
- Faculty of Chemistry, Physical Chemistry-Biophysical Chemistry, TU Dortmund, Otto-Hahn Str. 6, 44227 Dortmund, Germany
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45
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Meersman F, McMillan PF. High hydrostatic pressure: a probing tool and a necessary parameter in biophysical chemistry. Chem Commun (Camb) 2014; 50:766-75. [PMID: 24286104 DOI: 10.1039/c3cc45844j] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
High pressures extending up to several thousands of atmospheres provide extreme conditions for biological organisms to survive. Recent studies are investigating the survival mechanisms and biological function of microorganisms under natural and laboratory conditions extending into the GigaPascal range, with applications to understanding the Earth's deep biosphere and food technology. High pressure has also emerged as a useful tool and physical parameter for probing changes in the structure and functional properties of biologically important macromolecules and polymers encountered in soft matter science. Here we highlight some areas of current interest in high pressure biophysics and physical chemistry that are emerging at the frontier of this cross-disciplinary field.
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Affiliation(s)
- Filip Meersman
- Department of Chemistry, University College London, 20 Gordon St., London WC1H 0AJ, UK.
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Bras W, Koizumi S, Terrill NJ. Beyond simple small-angle X-ray scattering: developments in online complementary techniques and sample environments. IUCRJ 2014; 1:478-91. [PMID: 25485128 PMCID: PMC4224466 DOI: 10.1107/s2052252514019198] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2014] [Accepted: 08/25/2014] [Indexed: 05/20/2023]
Abstract
Small- and wide-angle X-ray scattering (SAXS, WAXS) are standard tools in materials research. The simultaneous measurement of SAXS and WAXS data in time-resolved studies has gained popularity due to the complementary information obtained. Furthermore, the combination of these data with non X-ray based techniques, via either simultaneous or independent measurements, has advanced understanding of the driving forces that lead to the structures and morphologies of materials, which in turn give rise to their properties. The simultaneous measurement of different data regimes and types, using either X-rays or neutrons, and the desire to control parameters that initiate and control structural changes have led to greater demands on sample environments. Examples of developments in technique combinations and sample environment design are discussed, together with a brief speculation about promising future developments.
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Affiliation(s)
- Wim Bras
- Netherlands Organization for Scientific Research (NWO), DUBBLE@ESRF, BP 220, 6 Rue Jules Horowitz, Grenoble 38043, France
| | - Satoshi Koizumi
- College of Engineering, Ibaraki University, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Nicholas J Terrill
- Science Division, Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, UK
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Brooks NJ. Pressure effects on lipids and bio-membrane assemblies. IUCRJ 2014; 1:470-7. [PMID: 25485127 PMCID: PMC4224465 DOI: 10.1107/s2052252514019551] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Accepted: 08/28/2014] [Indexed: 05/06/2023]
Abstract
Membranes are amongst the most important biological structures; they maintain the fundamental integrity of cells, compartmentalize regions within them and play an active role in a wide range of cellular processes. Pressure can play a key role in probing the structure and dynamics of membrane assemblies, and is also critical to the biology and adaptation of deep-sea organisms. This article presents an overview of the effect of pressure on the mesostructure of lipid membranes, bilayer organization and lipid-protein assemblies. It also summarizes recent developments in high-pressure structural instrumentation suitable for experiments on membranes.
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Affiliation(s)
- Nicholas J. Brooks
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, England
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Tang TYD, Seddon AM, Jeworrek C, Winter R, Ces O, Seddon JM, Templer RH. The effects of pressure and temperature on the energetics and pivotal surface in a monoacylglycerol/water gyroid inverse bicontinuous cubic phase. SOFT MATTER 2014; 10:3009-3015. [PMID: 24695766 DOI: 10.1039/c4sm00114a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We have studied the effect of pressure and temperature on the location of the pivotal surface in a lipid inverse bicontinuous gyroid cubic phase (Q(G)(II)), described by the area at the pivotal surface (An), the volume between the pivotal surface and the bilayer midplane (Vn), and the molecular volume of the lipid (V). Small angle X-ray scattering (SAXS) was used to measure the swelling behaviour of the lipid, monolinolein, as a function of pressure and temperature, and the data were fitted to two different geometric models: the parallel interface model (PIM), and the constant mean curvature model (CMCM). The results show that an increase in temperature leads to a shift in the location of the pivotal surface towards the bilayer midplane, whilst an increase in pressure causes the pivotal surface to move towards the interfacial region. In addition, we describe the relevance of An, Vn and V for modeling the energetics of curved mesophases with specific reference to the mean curvature at the pivotal surface and discuss the significance of this parameter for modelling the energetics of curved mesophases.
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Affiliation(s)
- T-Y Dora Tang
- Department of Chemistry, Imperial College London, Exhibition Road, London, SW7 2AY, UK
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Möller J, Grobelny S, Schulze J, Bieder S, Steffen A, Erlkamp M, Paulus M, Tolan M, Winter R. Reentrant liquid-liquid phase separation in protein solutions at elevated hydrostatic pressures. PHYSICAL REVIEW LETTERS 2014; 112:028101. [PMID: 24484044 DOI: 10.1103/physrevlett.112.028101] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Indexed: 06/03/2023]
Abstract
We present results from small-angle x-ray scattering data on the effect of high pressure on the phase behavior of dense lysozyme solutions in the liquid-liquid phase separation region, and characterize the underlying intermolecular protein-protein interactions as a function of temperature and pressure in this region of phase space. A reentrant liquid-liquid phase separation region has been discovered at elevated pressures, which originates in the pressure dependence of the solvent-mediated protein-protein interactions.
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Affiliation(s)
| | - Sebastian Grobelny
- Physikalische Chemie, Fakultät für Chemie und Chemische Biologie, TU Dortmund, Otto-Hahn Strasse 6, 44227 Dortmund, Germany
| | - Julian Schulze
- Fakultät Physik/DELTA, TU Dortmund, 44221 Dortmund, Germany
| | - Steffen Bieder
- Fakultät Physik/DELTA, TU Dortmund, 44221 Dortmund, Germany
| | - Andre Steffen
- Fakultät Physik/DELTA, TU Dortmund, 44221 Dortmund, Germany
| | - Mirko Erlkamp
- Physikalische Chemie, Fakultät für Chemie und Chemische Biologie, TU Dortmund, Otto-Hahn Strasse 6, 44227 Dortmund, Germany
| | - Michael Paulus
- Fakultät Physik/DELTA, TU Dortmund, 44221 Dortmund, Germany
| | - Metin Tolan
- Fakultät Physik/DELTA, TU Dortmund, 44221 Dortmund, Germany
| | - Roland Winter
- Physikalische Chemie, Fakultät für Chemie und Chemische Biologie, TU Dortmund, Otto-Hahn Strasse 6, 44227 Dortmund, Germany
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Möller J, Grobelny S, Schulze J, Steffen A, Bieder S, Paulus M, Tolan M, Winter R. Specific anion effects on the pressure dependence of the protein–protein interaction potential. Phys Chem Chem Phys 2014; 16:7423-9. [DOI: 10.1039/c3cp55278k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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