1
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Zhou W, Li Y, Partridge BE, Mirkin CA. Engineering Anisotropy into Organized Nanoscale Matter. Chem Rev 2024. [PMID: 39315621 DOI: 10.1021/acs.chemrev.4c00299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/25/2024]
Abstract
Programming the organization of discrete building blocks into periodic and quasi-periodic arrays is challenging. Methods for organizing materials are particularly important at the nanoscale, where the time required for organization processes is practically manageable in experiments, and the resulting structures are of interest for applications spanning catalysis, optics, and plasmonics. While the assembly of isotropic nanoscale objects has been extensively studied and described by empirical design rules, recent synthetic advances have allowed anisotropy to be programmed into macroscopic assemblies made from nanoscale building blocks, opening new opportunities to engineer periodic materials and even quasicrystals with unnatural properties. In this review, we define guidelines for leveraging anisotropy of individual building blocks to direct the organization of nanoscale matter. First, the nature and spatial distribution of local interactions are considered and three design rules that guide particle organization are derived. Subsequently, recent examples from the literature are examined in the context of these design rules. Within the discussion of each rule, we delineate the examples according to the dimensionality (0D-3D) of the building blocks. Finally, we use geometric considerations to propose a general inverse design-based construction strategy that will enable the engineering of colloidal crystals with unprecedented structural control.
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Affiliation(s)
- Wenjie Zhou
- International Institute for Nanotechnology, Northwestern University, Evanston, Illinois 60208, United States
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Yuanwei Li
- International Institute for Nanotechnology, Northwestern University, Evanston, Illinois 60208, United States
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Benjamin E Partridge
- International Institute for Nanotechnology, Northwestern University, Evanston, Illinois 60208, United States
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Chad A Mirkin
- International Institute for Nanotechnology, Northwestern University, Evanston, Illinois 60208, United States
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
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2
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Azuma Y, Gaweł S, Pasternak M, Woźnicka O, Pyza E, Heddle JG. Reengineering of an Artificial Protein Cage for Efficient Packaging of Active Enzymes. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2312286. [PMID: 38738740 DOI: 10.1002/smll.202312286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 04/01/2024] [Indexed: 05/14/2024]
Abstract
Protein cages that readily encapsulate active enzymes of interest present useful nanotools for delivery and catalysis, wherein those with programmable disassembly characteristics serve as particularly attractive platforms. Here, a general guest packaging system based on an artificial protein cage, TRAP-cage, the disassembly of which can be induced by the addition of reducing agents, is established. In this system, TRAP-cage with SpyCatcher moieties in the lumen is prepared using genetic modification of the protein building block and assembled into a cage structure with either monovalent gold ions or molecular crosslinkers. The resulting protein cage can efficiently capture guest proteins equipped with a SpyTag by simply mixing them in an aqueous solution. This post-assembly loading system, which circumvents the exposure of guests to thiol-reactive crosslinkers, enables the packaging of enzymes possessing a catalytic cysteine or a metal cofactor while retaining their catalytic activity.
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Affiliation(s)
- Yusuke Azuma
- Malopolska Centre of Biotechnology, Jagiellonian University, Gronostajowa 7A, Krakow, 30-387, Poland
| | - Szymon Gaweł
- Malopolska Centre of Biotechnology, Jagiellonian University, Gronostajowa 7A, Krakow, 30-387, Poland
- Doctoral School of Exact and Natural Sciences, Jagiellonian University, Prof. S. Łojasiewicza 11, Krakow, 30-348, Poland
| | - Monika Pasternak
- Malopolska Centre of Biotechnology, Jagiellonian University, Gronostajowa 7A, Krakow, 30-387, Poland
- Doctoral School of Exact and Natural Sciences, Jagiellonian University, Prof. S. Łojasiewicza 11, Krakow, 30-348, Poland
| | - Olga Woźnicka
- Institute of Zoology and Biomedical Research, Faculty of Biology, Jagiellonian University, Gronostajowa 9, Krakow, 30-387, Poland
| | - Elżbieta Pyza
- Institute of Zoology and Biomedical Research, Faculty of Biology, Jagiellonian University, Gronostajowa 9, Krakow, 30-387, Poland
| | - Jonathan G Heddle
- Malopolska Centre of Biotechnology, Jagiellonian University, Gronostajowa 7A, Krakow, 30-387, Poland
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3
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Xiao F, Luo L, Liu X, Ljubetič A, Jin N, Jerala R, Hu G. Comparative Simulative Analysis and Design of Single-Chain Self-Assembled Protein Cages. J Phys Chem B 2024; 128:6272-6282. [PMID: 38904939 DOI: 10.1021/acs.jpcb.4c01957] [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: 06/22/2024]
Abstract
Coiled-coil protein origami (CCPO) is a modular strategy for the de novo design of polypeptide nanostructures. It represents a type of modular design based on pairwise-interacting coiled-coil (CC) units with a single-chain protein programmed to fold into a polyhedral cage. However, the mechanisms underlying the self-assembly of the protein tetrahedron are still not fully understood. In the present study, 18 CCPO cages with three different topologies were modeled in silico. Then, molecular dynamics simulations and CC parameters were calculated to characterize the dynamic properties of protein tetrahedral cages at both the local and global levels. Furthermore, a deformed CC unit was redesigned, and the stability of the new cage was significantly improved.
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Affiliation(s)
- Fei Xiao
- MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Key Laboratory of Pathogen Bioscience and Anti-infective Medicine, Department of Bioinformatics, Center for Systems Biology, School of Biology and Basic Medical Sciences, Suzhou Medical College of Soochow University, Suzhou 215213, China
- Jiangsu Province Engineering Research Center of Precision Diagnostics and Therapeutics Development, Soochow University, Suzhou 215123, China
| | - Longfei Luo
- MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Key Laboratory of Pathogen Bioscience and Anti-infective Medicine, Department of Bioinformatics, Center for Systems Biology, School of Biology and Basic Medical Sciences, Suzhou Medical College of Soochow University, Suzhou 215213, China
| | - Xin Liu
- Institute of Blood and Marrow Transplantation, Medical College of Soochow University, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Collaborative Innovation Center of Hematology, National Clinical Research Center for Hematologic Diseases, Soochow University, Suzhou 215123, China
| | - Ajasja Ljubetič
- Department of Synthetic Biology and Immunology, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
- EN-FIST Centre of Excellence, SI-1000 Ljubljana, Slovenia
| | - Nengzhi Jin
- Key Laboratory of Advanced Computing of Gansu Province, Gansu Computing Center, Lanzhou 730030, China
| | - Roman Jerala
- Department of Synthetic Biology and Immunology, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
| | - Guang Hu
- MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Key Laboratory of Pathogen Bioscience and Anti-infective Medicine, Department of Bioinformatics, Center for Systems Biology, School of Biology and Basic Medical Sciences, Suzhou Medical College of Soochow University, Suzhou 215213, China
- Jiangsu Province Engineering Research Center of Precision Diagnostics and Therapeutics Development, Soochow University, Suzhou 215123, China
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4
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Szyszka TN, Andreas MP, Lie F, Miller LM, Adamson LSR, Fatehi F, Twarock R, Draper BE, Jarrold MF, Giessen TW, Lau YH. Point mutation in a virus-like capsid drives symmetry reduction to form tetrahedral cages. Proc Natl Acad Sci U S A 2024; 121:e2321260121. [PMID: 38722807 PMCID: PMC11098114 DOI: 10.1073/pnas.2321260121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 03/25/2024] [Indexed: 05/18/2024] Open
Abstract
Protein capsids are a widespread form of compartmentalization in nature. Icosahedral symmetry is ubiquitous in capsids derived from spherical viruses, as this geometry maximizes the internal volume that can be enclosed within. Despite the strong preference for icosahedral symmetry, we show that simple point mutations in a virus-like capsid can drive the assembly of unique symmetry-reduced structures. Starting with the encapsulin from Myxococcus xanthus, a 180-mer bacterial capsid that adopts the well-studied viral HK97 fold, we use mass photometry and native charge detection mass spectrometry to identify a triple histidine point mutant that forms smaller dimorphic assemblies. Using cryoelectron microscopy, we determine the structures of a precedented 60-mer icosahedral assembly and an unexpected 36-mer tetrahedron that features significant geometric rearrangements around a new interaction surface between capsid protomers. We subsequently find that the tetrahedral assembly can be generated by triple-point mutation to various amino acids and that even a single histidine point mutation is sufficient to form tetrahedra. These findings represent a unique example of tetrahedral geometry when surveying all characterized encapsulins, HK97-like capsids, or indeed any virus-derived capsids reported in the Protein Data Bank, revealing the surprising plasticity of capsid self-assembly that can be accessed through minimal changes in the protein sequence.
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Affiliation(s)
- Taylor N. Szyszka
- School of Chemistry, The University of Sydney, Camperdown, NSW2006, Australia
- The University of Sydney Nano Institute, The University of Sydney, Camperdown, NSW2006, Australia
| | - Michael P. Andreas
- Department of Biological Chemistry, University of Michigan Medical School, Ann Arbor, MI48109
| | - Felicia Lie
- School of Chemistry, The University of Sydney, Camperdown, NSW2006, Australia
| | - Lohra M. Miller
- Chemistry Department, Indiana University, Bloomington, IN47405
| | | | - Farzad Fatehi
- Department of Mathematics, University of York, YorkYO10 5DD, United Kingdom
- York Cross-Disciplinary Centre for Systems Analysis, University of York, YorkYO10 5DD, United Kingdom
| | - Reidun Twarock
- Department of Mathematics, University of York, YorkYO10 5DD, United Kingdom
- York Cross-Disciplinary Centre for Systems Analysis, University of York, YorkYO10 5DD, United Kingdom
- Department of Biology, University of York, YorkYO10 5DD, United Kingdom
| | | | | | - Tobias W. Giessen
- Department of Biological Chemistry, University of Michigan Medical School, Ann Arbor, MI48109
| | - Yu Heng Lau
- School of Chemistry, The University of Sydney, Camperdown, NSW2006, Australia
- The University of Sydney Nano Institute, The University of Sydney, Camperdown, NSW2006, Australia
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5
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Agdanowski MP, Castells-Graells R, Sawaya MR, Cascio D, Yeates TO, Arbing MA. X-ray crystal structure of a designed rigidified imaging scaffold in the ligand-free conformation. Acta Crystallogr F Struct Biol Commun 2024; 80:107-115. [PMID: 38767964 PMCID: PMC11134730 DOI: 10.1107/s2053230x2400414x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Accepted: 05/06/2024] [Indexed: 05/22/2024] Open
Abstract
Imaging scaffolds composed of designed protein cages fused to designed ankyrin repeat proteins (DARPins) have enabled the structure determination of small proteins by cryogenic electron microscopy (cryo-EM). One particularly well characterized scaffold type is a symmetric tetrahedral assembly composed of 24 subunits, 12 A and 12 B, which has three cargo-binding DARPins positioned on each vertex. Here, the X-ray crystal structure of a representative tetrahedral scaffold in the apo state is reported at 3.8 Å resolution. The X-ray crystal structure complements recent cryo-EM findings on a closely related scaffold, while also suggesting potential utility for crystallographic investigations. As observed in this crystal structure, one of the three DARPins, which serve as modular adaptors for binding diverse `cargo' proteins, present on each of the vertices is oriented towards a large solvent channel. The crystal lattice is unusually porous, suggesting that it may be possible to soak crystals of the scaffold with small (≤30 kDa) protein cargo ligands and subsequently determine cage-cargo structures via X-ray crystallography. The results suggest the possibility that cryo-EM scaffolds may be repurposed for structure determination by X-ray crystallography, thus extending the utility of electron-microscopy scaffold designs for alternative structural biology applications.
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Affiliation(s)
- Matthew P. Agdanowski
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Roger Castells-Graells
- Department of Biological Chemistry, University of California Los Angeles, Los Angeles, CA 90095, USA
- UCLA–DOE Institute for Genomics and Proteomics, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Michael R. Sawaya
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, CA 90095, USA
- UCLA–DOE Institute for Genomics and Proteomics, University of California Los Angeles, Los Angeles, CA 90095, USA
- Howard Hughes Medical Institute, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Duilio Cascio
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, CA 90095, USA
- Department of Biological Chemistry, University of California Los Angeles, Los Angeles, CA 90095, USA
- UCLA–DOE Institute for Genomics and Proteomics, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Todd O. Yeates
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, CA 90095, USA
- UCLA–DOE Institute for Genomics and Proteomics, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Mark A. Arbing
- Department of Biological Chemistry, University of California Los Angeles, Los Angeles, CA 90095, USA
- UCLA–DOE Institute for Genomics and Proteomics, University of California Los Angeles, Los Angeles, CA 90095, USA
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6
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Xia X, Li H, Zang J, Cheng S, Du M. Advancements of the Molecular Directed Design and Structure-Activity Relationship of Ferritin Nanocage. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:7629-7654. [PMID: 38518374 DOI: 10.1021/acs.jafc.3c09903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/24/2024]
Abstract
Ferritin nanocages possess remarkable structural properties and biological functions, making them highly attractive for applications in functional materials and biomedicine. This comprehensive review presents an overview of the molecular characteristics, extraction and identification of ferritin, ferritin receptors, as well as the advancements in the directional design of high-order assemblies of ferritin and the applications based on its unique structural properties. Specifically, this Review focuses on the regulation of ferritin assembly from one to three dimensions, leveraging the symmetry of ferritin and modifications on key interfaces. Furthermore, it discusses targeted delivery of nutrition and drugs through facile loading and functional modification of ferritin. The aim of this Review is to inspire the design of micro/nano functional materials using ferritin and the development of nanodelivery vehicles for nutritional fortification and disease treatment.
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Affiliation(s)
- Xiaoyu Xia
- SKL of Marine Food Processing & Safety Control, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
- National Engineering Research Center of Seafood, Collaborative Innovation Centre of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
| | - Han Li
- SKL of Marine Food Processing & Safety Control, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
- National Engineering Research Center of Seafood, Collaborative Innovation Centre of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
| | - Jiachen Zang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Shuzhen Cheng
- SKL of Marine Food Processing & Safety Control, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
- National Engineering Research Center of Seafood, Collaborative Innovation Centre of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
| | - Ming Du
- SKL of Marine Food Processing & Safety Control, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
- National Engineering Research Center of Seafood, Collaborative Innovation Centre of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
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7
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Gladkov N, Scott EA, Meador K, Lee EJ, Laganowsky AD, Yeates TO, Castells‐Graells R. Design of a symmetry-broken tetrahedral protein cage by a method of internal steric occlusion. Protein Sci 2024; 33:e4973. [PMID: 38533546 PMCID: PMC10966355 DOI: 10.1002/pro.4973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 03/05/2024] [Accepted: 03/12/2024] [Indexed: 03/28/2024]
Abstract
Methods in protein design have made it possible to create large and complex, self-assembling protein cages with diverse applications. These have largely been based on highly symmetric forms exemplified by the Platonic solids. Prospective applications of protein cages would be expanded by strategies for breaking the designed symmetry, for example, so that only one or a few (instead of many) copies of an exterior domain or motif might be displayed on their surfaces. Here we demonstrate a straightforward design approach for creating symmetry-broken protein cages able to display singular copies of outward-facing domains. We modify the subunit of an otherwise symmetric protein cage through fusion to a small inward-facing domain, only one copy of which can be accommodated in the cage interior. Using biochemical methods and native mass spectrometry, we show that co-expression of the original subunit and the modified subunit, which is further fused to an outward-facing anti-GFP DARPin domain, leads to self-assembly of a protein cage presenting just one copy of the DARPin protein on its exterior. This strategy of designed occlusion provides a facile route for creating new types of protein cages with unique properties.
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Affiliation(s)
- Nika Gladkov
- Department of Chemistry and BiochemistryUniversity of CaliforniaLos AngelesCaliforniaUSA
| | - Elena A. Scott
- Department of ChemistryTexas A&M UniversityCollege StationTexasUSA
| | - Kyle Meador
- Department of Chemistry and BiochemistryUniversity of CaliforniaLos AngelesCaliforniaUSA
| | - Eric J. Lee
- Department of Chemistry and BiochemistryUniversity of CaliforniaLos AngelesCaliforniaUSA
| | | | - Todd O. Yeates
- Department of Chemistry and BiochemistryUniversity of CaliforniaLos AngelesCaliforniaUSA
- Molecular Biology InstituteUniversity of CaliforniaLos AngelesCaliforniaUSA
- UCLA‐DOE Institute for Genomics and ProteomicsLos AngelesCaliforniaUSA
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8
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Szyszka TN, Andreas MP, Lie F, Miller LM, Adamson LSR, Fatehi F, Twarock R, Draper BE, Jarrold MF, Giessen TW, Lau YH. Point mutation in a virus-like capsid drives symmetry reduction to form tetrahedral cages. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.02.05.579038. [PMID: 38370832 PMCID: PMC10871247 DOI: 10.1101/2024.02.05.579038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Protein capsids are a widespread form of compartmentalisation in nature. Icosahedral symmetry is ubiquitous in capsids derived from spherical viruses, as this geometry maximises the internal volume that can be enclosed within. Despite the strong preference for icosahedral symmetry, we show that simple point mutations in a virus-like capsid can drive the assembly of novel symmetry-reduced structures. Starting with the encapsulin from Myxococcus xanthus, a 180-mer bacterial capsid that adopts the well-studied viral HK97 fold, we use mass photometry and native charge detection mass spectrometry to identify a triple histidine point mutant that forms smaller dimorphic assemblies. Using cryo-EM, we determine the structures of a precedented 60-mer icosahedral assembly and an unprecedented 36-mer tetrahedron that features significant geometric rearrangements around a novel interaction surface between capsid protomers. We subsequently find that the tetrahedral assembly can be generated by triple point mutation to various amino acids, and that even a single histidine point mutation is sufficient to form tetrahedra. These findings represent the first example of tetrahedral geometry across all characterised encapsulins, HK97-like capsids, or indeed any virus-derived capsids reported in the Protein Data Bank, revealing the surprising plasticity of capsid self-assembly that can be accessed through minimal changes in protein sequence.
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Affiliation(s)
- Taylor N Szyszka
- School of Chemistry, The University of Sydney, Camperdown, NSW 2006, Australia
- The University of Sydney Nano Institute, The University of Sydney, Camperdown, NSW 2006, Australia
| | - Michael P Andreas
- Department of Biological Chemistry, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Felicia Lie
- School of Chemistry, The University of Sydney, Camperdown, NSW 2006, Australia
| | - Lohra M Miller
- Chemistry Department, Indiana University, 800 E. Kirkwood Avenue, Bloomington, IN 47405, USA
| | - Lachlan S R Adamson
- School of Chemistry, The University of Sydney, Camperdown, NSW 2006, Australia
| | - Farzad Fatehi
- Department of Mathematics, University of York, York, UK
- York Cross-Disciplinary Centre for Systems Analysis, University of York, York, UK
| | - Reidun Twarock
- Department of Mathematics, University of York, York, UK
- York Cross-Disciplinary Centre for Systems Analysis, University of York, York, UK
- Department of Biology, University of York, York, UK
| | - Benjamin E Draper
- Megadalton Solutions Inc., 3750 E Bluebird Ln, Bloomington, IN 47401, USA
| | - Martin F Jarrold
- Chemistry Department, Indiana University, 800 E. Kirkwood Avenue, Bloomington, IN 47405, USA
| | - Tobias W Giessen
- Department of Biological Chemistry, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Yu Heng Lau
- School of Chemistry, The University of Sydney, Camperdown, NSW 2006, Australia
- The University of Sydney Nano Institute, The University of Sydney, Camperdown, NSW 2006, Australia
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9
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Gladkov N, Scott EA, Meador K, Lee EJ, Laganowsky AD, Yeates TO, Castells-Graells R. Design of a symmetry-broken tetrahedral protein cage by a method of internal steric occlusion. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.08.566319. [PMID: 37986890 PMCID: PMC10659388 DOI: 10.1101/2023.11.08.566319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
Methods in protein design have made it possible to create large and complex, self-assembling protein cages with diverse applications. These have largely been based on highly symmetric forms exemplified by the Platonic solids. Prospective applications of protein cages would be expanded by strategies for breaking the designed symmetry, e.g., so that only one or a few (instead of many) copies of an exterior domain or motif might be displayed on their surfaces. Here we demonstrate a straightforward design approach for creating symmetry-broken protein cages able to display singular copies of outward-facing domains. We modify the subunit of an otherwise symmetric protein cage through fusion to a small inward-facing domain, only one copy of which can be accommodated in the cage interior. Using biochemical methods and native mass spectrometry, we show that co-expression of the original subunit and the modified subunit, which is further fused to an outward-facing anti-GFP DARPin domain, leads to self-assembly of a protein cage presenting just one copy of the DARPin protein on its exterior. This strategy of designed occlusion provides a facile route for creating new types of protein cages with unique properties.
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Affiliation(s)
- Nika Gladkov
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095, United States of America
| | - Elena A. Scott
- Department of Chemistry, Texas A&M University, College Station, TX 77843, United States of America
| | - Kyle Meador
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095, United States of America
| | - Eric J. Lee
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095, United States of America
| | - Arthur D. Laganowsky
- Department of Chemistry, Texas A&M University, College Station, TX 77843, United States of America
| | - Todd O. Yeates
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095, United States of America
- Molecular Biology Institute, University of California, Los Angeles, CA 90095, United States of America
- UCLA-DOE Institute for Genomics and Proteomics, Los Angeles, CA 90095, United States of America
| | - Roger Castells-Graells
- UCLA-DOE Institute for Genomics and Proteomics, Los Angeles, CA 90095, United States of America
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10
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Khmelinskaia A, Bethel NP, Fatehi F, Antanasijevic A, Borst AJ, Lai SH, Wang JYJ, Mallik BB, Miranda MC, Watkins AM, Ogohara C, Caldwell S, Wu M, Heck AJR, Veesler D, Ward AB, Baker D, Twarock R, King NP. Local structural flexibility drives oligomorphism in computationally designed protein assemblies. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.10.18.562842. [PMID: 37905007 PMCID: PMC10614843 DOI: 10.1101/2023.10.18.562842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2023]
Abstract
Many naturally occurring protein assemblies have dynamic structures that allow them to perform specialized functions. For example, clathrin coats adopt a wide variety of architectures to adapt to vesicular cargos of various sizes. Although computational methods for designing novel self-assembling proteins have advanced substantially over the past decade, most existing methods focus on designing static structures with high accuracy. Here we characterize the structures of three distinct computationally designed protein assemblies that each form multiple unanticipated architectures, and identify flexibility in specific regions of the subunits of each assembly as the source of structural diversity. Cryo-EM single-particle reconstructions and native mass spectrometry showed that only two distinct architectures were observed in two of the three cases, while we obtained six cryo-EM reconstructions that likely represent a subset of the architectures present in solution in the third case. Structural modeling and molecular dynamics simulations indicated that the surprising observation of a defined range of architectures, instead of non-specific aggregation, can be explained by constrained flexibility within the building blocks. Our results suggest that deliberate use of structural flexibility as a design principle will allow exploration of previously inaccessible structural and functional space in designed protein assemblies.
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11
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Mallik BB, Stanislaw J, Alawathurage TM, Khmelinskaia A. De Novo Design of Polyhedral Protein Assemblies: Before and After the AI Revolution. Chembiochem 2023; 24:e202300117. [PMID: 37014094 DOI: 10.1002/cbic.202300117] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 04/03/2023] [Accepted: 04/03/2023] [Indexed: 04/05/2023]
Abstract
Self-assembling polyhedral protein biomaterials have gained attention as engineering targets owing to their naturally evolved sophisticated functions, ranging from protecting macromolecules from the environment to spatially controlling biochemical reactions. Precise computational design of de novo protein polyhedra is possible through two main types of approaches: methods from first principles, using physical and geometrical rules, and more recent data-driven methods based on artificial intelligence (AI), including deep learning (DL). Here, we retrospect first principle- and AI-based approaches for designing finite polyhedral protein assemblies, as well as advances in the structure prediction of such assemblies. We further highlight the possible applications of these materials and explore how the presented approaches can be combined to overcome current challenges and to advance the design of functional protein-based biomaterials.
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Affiliation(s)
- Bhoomika Basu Mallik
- Transdisciplinary Research Area, "Building Blocks of Matter and Fundamental Interactions (TRA Matter)", University of Bonn, 53121, Bonn, Germany
- Life and Medical Sciences Institute, University of Bonn, 53115, Bonn, Germany
| | - Jenna Stanislaw
- Transdisciplinary Research Area, "Building Blocks of Matter and Fundamental Interactions (TRA Matter)", University of Bonn, 53121, Bonn, Germany
- Life and Medical Sciences Institute, University of Bonn, 53115, Bonn, Germany
| | - Tharindu Madhusankha Alawathurage
- Transdisciplinary Research Area, "Building Blocks of Matter and Fundamental Interactions (TRA Matter)", University of Bonn, 53121, Bonn, Germany
- Life and Medical Sciences Institute, University of Bonn, 53115, Bonn, Germany
| | - Alena Khmelinskaia
- Transdisciplinary Research Area, "Building Blocks of Matter and Fundamental Interactions (TRA Matter)", University of Bonn, 53121, Bonn, Germany
- Life and Medical Sciences Institute, University of Bonn, 53115, Bonn, Germany
- Current address: Department of Chemistry, Ludwig Maximillian University, 80539, Munich, Germany
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12
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João J, Prazeres DMF. Manufacturing of non-viral protein nanocages for biotechnological and biomedical applications. Front Bioeng Biotechnol 2023; 11:1200729. [PMID: 37520292 PMCID: PMC10374429 DOI: 10.3389/fbioe.2023.1200729] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 07/05/2023] [Indexed: 08/01/2023] Open
Abstract
Protein nanocages are highly ordered nanometer scale architectures, which are typically formed by homo- or hetero-self-assembly of multiple monomers into symmetric structures of different size and shape. The intrinsic characteristics of protein nanocages make them very attractive and promising as a biological nanomaterial. These include, among others, a high surface/volume ratio, multi-functionality, ease to modify or manipulate genetically or chemically, high stability, mono-dispersity, and biocompatibility. Since the beginning of the investigation into protein nanocages, several applications were conceived in a variety of areas such as drug delivery, vaccine development, bioimaging, biomineralization, nanomaterial synthesis and biocatalysis. The ability to generate large amounts of pure and well-folded protein assemblies is one of the keys to transform nanocages into clinically valuable products and move biomedical applications forward. This calls for the development of more efficient biomanufacturing processes and for the setting up of analytical techniques adequate for the quality control and characterization of the biological function and structure of nanocages. This review concisely covers and overviews the progress made since the emergence of protein nanocages as a new, next-generation class of biologics. A brief outline of non-viral protein nanocages is followed by a presentation of their main applications in the areas of bioengineering, biotechnology, and biomedicine. Afterwards, we focus on a description of the current processes used in the manufacturing of protein nanocages with particular emphasis on the most relevant aspects of production and purification. The state-of-the-art on current characterization techniques is then described and future alternative or complementary approaches in development are also discussed. Finally, a critical analysis of the limitations and drawbacks of the current manufacturing strategies is presented, alongside with the identification of the major challenges and bottlenecks.
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Affiliation(s)
- Jorge João
- iBB–Institute for Bioengineering and Biosciences, Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
- Associate Laboratory i4HB–Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - Duarte Miguel F. Prazeres
- iBB–Institute for Bioengineering and Biosciences, Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
- Associate Laboratory i4HB–Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
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13
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Dowling QM, Park YJ, Gerstenmaier N, Yang EC, Wargacki A, Hsia Y, Fries CN, Ravichandran R, Walkey C, Burrell A, Veesler D, Baker D, King NP. Hierarchical design of pseudosymmetric protein nanoparticles. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.06.16.545393. [PMID: 37398374 PMCID: PMC10312784 DOI: 10.1101/2023.06.16.545393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Abstract
Discrete protein assemblies ranging from hundreds of kilodaltons to hundreds of megadaltons in size are a ubiquitous feature of biological systems and perform highly specialized functions 1-3. Despite remarkable recent progress in accurately designing new self-assembling proteins, the size and complexity of these assemblies has been limited by a reliance on strict symmetry 4,5. Inspired by the pseudosymmetry observed in bacterial microcompartments and viral capsids, we developed a hierarchical computational method for designing large pseudosymmetric self-assembling protein nanomaterials. We computationally designed pseudosymmetric heterooligomeric components and used them to create discrete, cage-like protein assemblies with icosahedral symmetry containing 240, 540, and 960 subunits. At 49, 71, and 96 nm diameter, these nanoparticles are the largest bounded computationally designed protein assemblies generated to date. More broadly, by moving beyond strict symmetry, our work represents an important step towards the accurate design of arbitrary self-assembling nanoscale protein objects.
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Affiliation(s)
- Quinton M Dowling
- Department of Bioengineering, University of Washington, Seattle, WA 98195, USA
- Institute for Protein Design, University of Washington, Seattle, WA 98195, USA
| | - Young-Jun Park
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA
| | - Neil Gerstenmaier
- Institute for Protein Design, University of Washington, Seattle, WA 98195, USA
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA
| | - Erin C Yang
- Institute for Protein Design, University of Washington, Seattle, WA 98195, USA
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA
| | - Adam Wargacki
- Institute for Protein Design, University of Washington, Seattle, WA 98195, USA
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA
| | - Yang Hsia
- Institute for Protein Design, University of Washington, Seattle, WA 98195, USA
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA
| | - Chelsea N Fries
- Institute for Protein Design, University of Washington, Seattle, WA 98195, USA
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA
| | - Rashmi Ravichandran
- Institute for Protein Design, University of Washington, Seattle, WA 98195, USA
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA
| | - Carl Walkey
- Institute for Protein Design, University of Washington, Seattle, WA 98195, USA
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA
| | - Anika Burrell
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA
| | - David Veesler
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA
- Howard Hughes Medical Institute, Seattle, WA 98195, USA
| | - David Baker
- Institute for Protein Design, University of Washington, Seattle, WA 98195, USA
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA
- Howard Hughes Medical Institute, Seattle, WA 98195, USA
| | - Neil P King
- Institute for Protein Design, University of Washington, Seattle, WA 98195, USA
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA
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14
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Dzuvor CKO, Shanbhag BK, Shen HH, Haritos VS, He L. An Ultrastable Self-Assembled Antibacterial Nanospears Made of Protein. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2302409. [PMID: 37120846 DOI: 10.1002/adma.202302409] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 04/21/2023] [Indexed: 06/15/2023]
Abstract
Protein-based nanomaterials have broad applications in the biomedical and bionanotechnological sectors owing to their outstanding properties such as high biocompatibility and biodegradability, structural stability, sophisticated functional versatility, and being environmentally benign. They have gained considerable attention in drug delivery, cancer therapeutics, vaccines, immunotherapies, biosensing, and biocatalysis. However, so far, in the battle against the increasing reports of antibiotic resistance and emerging drug-resistant bacteria, unique nanostructures of this kind are lacking, hindering their potential next-generation antibacterial agents. Here, the discovery of a class of supramolecular nanostructures with well-defined shapes, geometries, or architectures (termed "protein nanospears") based on engineered proteins, exhibiting exceptional broad-spectrum antibacterial activities, is reported. The protein nanospears are engineered via spontaneous cleavage-dependent or precisely tunable self-assembly routes using mild metal salt-ions (Mg2+ , Ca2+ , Na+ ) as a molecular trigger. The nanospears' dimensions collectively range from entire nano- to micrometer scale. The protein nanospears display exceptional thermal and chemical stability yet rapidly disassemble upon exposure to high concentrations of chaotropes (>1 mm sodium dodecyl sulfate (SDS)). Using a combination of biological assays and electron microscopy imaging, it is revealed that the nanospears spontaneously induce rapid and irreparable damage to bacterial morphology via a unique action mechanism provided by their nanostructure and enzymatic action, a feat inaccessible to traditional antibiotics. These protein-based nanospears show promise as a potent tool to combat the growing threats of resistant bacteria, inspiring a new way to engineer other antibacterial protein nanomaterials with diverse structural and dimensional architectures and functional properties.
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Affiliation(s)
- Christian K O Dzuvor
- Department of Chemical and Biological Engineering Monash University Clayton, Victoria, 3800, Australia
| | - Bhuvana K Shanbhag
- Department of Chemical and Biological Engineering Monash University Clayton, Victoria, 3800, Australia
| | - Hsin-Hui Shen
- Department of Chemical and Biological Engineering Monash University Clayton, Victoria, 3800, Australia
| | - Victoria S Haritos
- Department of Chemical and Biological Engineering Monash University Clayton, Victoria, 3800, Australia
| | - Lizhong He
- Department of Chemical and Biological Engineering Monash University Clayton, Victoria, 3800, Australia
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15
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Lutz ID, Wang S, Norn C, Courbet A, Borst AJ, Zhao YT, Dosey A, Cao L, Xu J, Leaf EM, Treichel C, Litvicov P, Li Z, Goodson AD, Rivera-Sánchez P, Bratovianu AM, Baek M, King NP, Ruohola-Baker H, Baker D. Top-down design of protein architectures with reinforcement learning. Science 2023; 380:266-273. [PMID: 37079676 DOI: 10.1126/science.adf6591] [Citation(s) in RCA: 24] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Accepted: 03/21/2023] [Indexed: 04/22/2023]
Abstract
As a result of evolutionary selection, the subunits of naturally occurring protein assemblies often fit together with substantial shape complementarity to generate architectures optimal for function in a manner not achievable by current design approaches. We describe a "top-down" reinforcement learning-based design approach that solves this problem using Monte Carlo tree search to sample protein conformers in the context of an overall architecture and specified functional constraints. Cryo-electron microscopy structures of the designed disk-shaped nanopores and ultracompact icosahedra are very close to the computational models. The icosohedra enable very-high-density display of immunogens and signaling molecules, which potentiates vaccine response and angiogenesis induction. Our approach enables the top-down design of complex protein nanomaterials with desired system properties and demonstrates the power of reinforcement learning in protein design.
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Affiliation(s)
- Isaac D Lutz
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
- Department of Bioengineering, University of Washington, Seattle, WA, USA
| | - Shunzhi Wang
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
| | - Christoffer Norn
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
- BioInnovation Institute, DK2200 Copenhagen N, Denmark
| | - Alexis Courbet
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
- Howard Hughes Medical Institute, University of Washington, Seattle, WA, USA
| | - Andrew J Borst
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
| | - Yan Ting Zhao
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA, USA
- Oral Health Sciences, University of Washington, Seattle, WA, USA
| | - Annie Dosey
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
| | - Longxing Cao
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
- Key Laboratory of Structural Biology of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China
| | - Jinwei Xu
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
| | - Elizabeth M Leaf
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
| | - Catherine Treichel
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
| | - Patrisia Litvicov
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA, USA
| | - Zhe Li
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
| | - Alexander D Goodson
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
| | | | | | - Minkyung Baek
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
- School of Biological Sciences, Seoul National University, Seoul, Republic of Korea
| | - Neil P King
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
| | - Hannele Ruohola-Baker
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Department of Bioengineering, University of Washington, Seattle, WA, USA
- Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA, USA
- Oral Health Sciences, University of Washington, Seattle, WA, USA
| | - David Baker
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
- Department of Bioengineering, University of Washington, Seattle, WA, USA
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16
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Zhou S, Wei Y. Kaleidoscope megamolecules synthesis and application using self-assembly technology. Biotechnol Adv 2023; 65:108147. [PMID: 37023967 DOI: 10.1016/j.biotechadv.2023.108147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Revised: 02/20/2023] [Accepted: 04/02/2023] [Indexed: 04/08/2023]
Abstract
The megamolecules with high ordered structures play an important role in chemical biology and biomedical engineering. Self-assembly, a long-discovered but very appealing technique, could induce many reactions between biomacromolecules and organic linking molecules, such as an enzyme domain and its covalent inhibitors. Enzyme and its small-molecule inhibitors have achieved many successes in medical application, which realize the catalysis process and theranostic function. By employing the protein engineering technology, the building blocks of enzyme fusion protein and small molecule linker can be assembled into a novel architecture with the specified organization and conformation. Molecular level recognition of enzyme domain could provide both covalent reaction sites and structural skeleton for the functional fusion protein. In this review, we will discuss the range of tools available to combine functional domains by using the recombinant protein technology, which can assemble them into precisely specified architectures/valences and develop the kaleidoscope megamolecules for catalytic and medical application.
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Affiliation(s)
- Shengwang Zhou
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, PR China.
| | - Yuan Wei
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, PR China
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17
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Oohora K, Hayashi T. Preparation of Cage-Like Micellar Assemblies of Engineered Hemoproteins. Methods Mol Biol 2023; 2671:95-108. [PMID: 37308640 DOI: 10.1007/978-1-0716-3222-2_5] [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: 06/14/2023]
Abstract
Natural protein assemblies have encouraged scientists to create large supramolecular systems consisting of various protein motifs. In the case of hemoproteins containing heme as a cofactor, several approaches have been reported to form artificial assemblies with various structures such as fibers, sheets, networks, and cages. This chapter describes the design, preparation, and characterization of cage-like micellar assemblies for chemically modified hemoproteins including hydrophilic protein units attached to hydrophobic molecules. Detailed procedures are described for constructing specific systems using cytochrome b562 and hexameric tyrosine-coordinated heme protein as hemoprotein units with heme-azobenzene conjugate and poly-N-isopropylacrylamide as attached molecules.
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Affiliation(s)
- Koji Oohora
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka, Suita, Japan.
| | - Takashi Hayashi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka, Suita, Japan.
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18
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Liu Y, Chen X, Yin S, Chang X, Lv C, Zang J, Leng X, Zhang T, Zhao G. Directed Self-Assembly of Dimeric Building Blocks into Networklike Protein Origami to Construct Hydrogels. ACS NANO 2022; 16:19472-19481. [PMID: 36315654 DOI: 10.1021/acsnano.2c09391] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Engineering proteins to construct self-assemblies is of crucial significance not only for understanding the sophisticated living systems but also for fabricating advanced materials with unexplored functions. However, due to the inherent chemical heterogeneity and structural complexity of the protein surface, designing complex protein assemblies in an anisotropic fashion remains challenging. Here, we describe a self-assembly approach to fabricating protein origami with a networklike structure by designing dual noncovalent interactions on the different positions of a single protein building block. With dimeric proteins as building blocks, 1D protein filaments were constructed by the designed metal coordination at key protein interfaces. Subsequently, the network superstructures were created by the cross-linking of the 1D protein filaments at branch point linkages through the second designed π-π stacking interactions. Notably, upon increasing the protein concentration, the formed protein networks convert into hydrogels with reversible, injectable, and self-healing properties, which have the ability to promote bone regeneration. This strategy could be used to fabricate other protein-based materials with unexplored functions.
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Affiliation(s)
- Yu Liu
- College of Food Science & Nutritional Engineering, Beijing Key Laboratory of Functional Food from Plant Resources, China Agricultural University, Beijing 100083, People's Republic of China
| | - Xuemin Chen
- College of Food Science & Nutritional Engineering, Beijing Key Laboratory of Functional Food from Plant Resources, China Agricultural University, Beijing 100083, People's Republic of China
| | - Shuhua Yin
- College of Food Science & Nutritional Engineering, Beijing Key Laboratory of Functional Food from Plant Resources, China Agricultural University, Beijing 100083, People's Republic of China
| | - Xiaoxi Chang
- College of Food Science & Nutritional Engineering, Beijing Key Laboratory of Functional Food from Plant Resources, China Agricultural University, Beijing 100083, People's Republic of China
| | - Chenyan Lv
- College of Food Science & Nutritional Engineering, Beijing Key Laboratory of Functional Food from Plant Resources, China Agricultural University, Beijing 100083, People's Republic of China
| | - Jiachen Zang
- College of Food Science & Nutritional Engineering, Beijing Key Laboratory of Functional Food from Plant Resources, China Agricultural University, Beijing 100083, People's Republic of China
| | - Xiaojing Leng
- College of Food Science & Nutritional Engineering, Beijing Key Laboratory of Functional Food from Plant Resources, China Agricultural University, Beijing 100083, People's Republic of China
| | - Tuo Zhang
- College of Food Science & Nutritional Engineering, Beijing Key Laboratory of Functional Food from Plant Resources, China Agricultural University, Beijing 100083, People's Republic of China
| | - Guanghua Zhao
- College of Food Science & Nutritional Engineering, Beijing Key Laboratory of Functional Food from Plant Resources, China Agricultural University, Beijing 100083, People's Republic of China
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19
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Murray DT, Shin DS, Classen S, Brosey CA, Hura GL. Visualizing and accessing correlated SAXS data sets with Similarity Maps and Simple Scattering web resources. Methods Enzymol 2022; 678:411-440. [PMID: 36641216 DOI: 10.1016/bs.mie.2022.09.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Constructing a comprehensive understanding of macromolecular behavior from a set of correlated small angle scattering (SAS) data is aided by tools that analyze all scattering curves together. SAS experiments on biological systems can be performed on specimens that are more easily prepared, modified, and formatted relative to those of most other techniques. An X-ray SAS measurement (SAXS) can be performed in less than a milli-second in-line with treatment steps such as purification or exposure to modifiers. These capabilities are valuable since biological macromolecules (proteins, polynucleotides, lipids, and carbohydrates) change conformation or assembly under specific conditions that often define their biological role. Furthermore, mutation or post-translational modification change their behavior and provides an avenue to tailor their mechanics. Here, we describe tools to combine multiple correlated SAS measurements for analysis and review their application to biological systems. The SAXS Similarity Map (SSM) compares a set of scattering curves and quantifies the similarity between them for display as a color on a grid. Visualizing an entire correlated data set with SSMs helps identify patterns that reveal biological functions. The SSM analysis is available as a web-based tool at https://sibyls.als.lbl.gov/saxs-similarity/. To make data available and promote tool development, we have also deployed a repository of correlated SAS data sets called Simple Scattering (available at https://simplescattering.com). The correlated data sets used to demonstrate the SSM are available on the Simple Scattering website. We expect increased utilization of correlated SAS measurements to characterize the tightly controlled mechanistic properties of biological systems and fine-tune engineered macromolecules for nanotechnology-based applications.
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Affiliation(s)
- Daniel T Murray
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
| | - David S Shin
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
| | - Scott Classen
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
| | - Chris A Brosey
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Greg L Hura
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA, United States; Department of Chemistry and Biochemistry, University of California Santa Cruz, Santa Cruz, CA, United States.
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20
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Qing R, Hao S, Smorodina E, Jin D, Zalevsky A, Zhang S. Protein Design: From the Aspect of Water Solubility and Stability. Chem Rev 2022; 122:14085-14179. [PMID: 35921495 PMCID: PMC9523718 DOI: 10.1021/acs.chemrev.1c00757] [Citation(s) in RCA: 56] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Indexed: 12/13/2022]
Abstract
Water solubility and structural stability are key merits for proteins defined by the primary sequence and 3D-conformation. Their manipulation represents important aspects of the protein design field that relies on the accurate placement of amino acids and molecular interactions, guided by underlying physiochemical principles. Emulated designer proteins with well-defined properties both fuel the knowledge-base for more precise computational design models and are used in various biomedical and nanotechnological applications. The continuous developments in protein science, increasing computing power, new algorithms, and characterization techniques provide sophisticated toolkits for solubility design beyond guess work. In this review, we summarize recent advances in the protein design field with respect to water solubility and structural stability. After introducing fundamental design rules, we discuss the transmembrane protein solubilization and de novo transmembrane protein design. Traditional strategies to enhance protein solubility and structural stability are introduced. The designs of stable protein complexes and high-order assemblies are covered. Computational methodologies behind these endeavors, including structure prediction programs, machine learning algorithms, and specialty software dedicated to the evaluation of protein solubility and aggregation, are discussed. The findings and opportunities for Cryo-EM are presented. This review provides an overview of significant progress and prospects in accurate protein design for solubility and stability.
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Affiliation(s)
- Rui Qing
- State
Key Laboratory of Microbial Metabolism, School of Life Sciences and
Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
- Media
Lab, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- The
David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Shilei Hao
- Media
Lab, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- Key
Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400030, China
| | - Eva Smorodina
- Department
of Immunology, University of Oslo and Oslo
University Hospital, Oslo 0424, Norway
| | - David Jin
- Avalon GloboCare
Corp., Freehold, New Jersey 07728, United States
| | - Arthur Zalevsky
- Laboratory
of Bioinformatics Approaches in Combinatorial Chemistry and Biology, Shemyakin−Ovchinnikov Institute of Bioorganic
Chemistry RAS, Moscow 117997, Russia
| | - Shuguang Zhang
- Media
Lab, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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21
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Ma Y, Li X, Zhao R, Wu E, Du Q, Guo J, Wang L, Zhang F. Creating de novo peptide-based bioactivities: from assembly to origami. RSC Adv 2022; 12:25955-25961. [PMID: 36199601 PMCID: PMC9465703 DOI: 10.1039/d2ra03135c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 08/24/2022] [Indexed: 11/21/2022] Open
Abstract
DNA origami has created complex structures of various spatial dimensions. However, their versatility in terms of function is limited due to the lower number of the intrinsic building blocks, i.e. nucleotides, compared with the number of amino acids. Therefore, protein origami has been proposed and demonstrated to precisely fabricate artificial functional nanostructures. Despite their hierarchical folded structures, chain-like peptides and DNA share obvious similarities in both structures and properties, especially in terms of chain hybridization; therefore, replacing DNA with peptides to create bioactivities not only has high theoretical feasibility but also provides a new bottom-up synthetic strategy. However, designing functionalities with tens to hundreds of peptide chains using the similar principle of DNA origami has not been reported, although the origami strategy holds great potential to generate more complex bioactivities. In this perspective review, we have reviewed the recent progress in and highlighted the advantages of peptide assembly and origami on the orientation of artificially created bioactivities. With the great potential of peptide origami, we appeal to develop user-friendly softwares in combination with artificial intelligence.
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Affiliation(s)
- Yuxing Ma
- Wenzhou Institute, University of Chinese Academy of Sciences Wenzhou 325001 China
- Oujiang Laboratory Wenzhou Zhejiang 325000 P. R. China
- Inner Mongolia Key Laboratory of Tick-Borne Zoonotic Infectious Disease, Department of Medicine, Hetao College Bayannur 015000 China
| | - Xiaofang Li
- Wenzhou Institute, University of Chinese Academy of Sciences Wenzhou 325001 China
- Oujiang Laboratory Wenzhou Zhejiang 325000 P. R. China
- Key Laboratory of Optical Technology and Instrument for Medicine, Ministry of Education, University of Shanghai for Science and Technology Shanghai 200093 P. R. China
| | - Ruoyang Zhao
- Wenzhou Institute, University of Chinese Academy of Sciences Wenzhou 325001 China
- Oujiang Laboratory Wenzhou Zhejiang 325000 P. R. China
| | - Enqi Wu
- Inner Mongolia Key Laboratory of Tick-Borne Zoonotic Infectious Disease, Department of Medicine, Hetao College Bayannur 015000 China
| | - Qiqige Du
- Wenzhou Institute, University of Chinese Academy of Sciences Wenzhou 325001 China
- Oujiang Laboratory Wenzhou Zhejiang 325000 P. R. China
| | - Jun Guo
- Key Laboratory of Optical Technology and Instrument for Medicine, Ministry of Education, University of Shanghai for Science and Technology Shanghai 200093 P. R. China
- State Key Laboratory of Respiratory Disease, Guangzhou Institute of Oral Disease, Stomatology Hospital, School of Biomedical Engineering, Guangzhou Medical University Guangzhou 511436 China
| | - Liping Wang
- Wenzhou Institute, University of Chinese Academy of Sciences Wenzhou 325001 China
- Oujiang Laboratory Wenzhou Zhejiang 325000 P. R. China
| | - Feng Zhang
- Wenzhou Institute, University of Chinese Academy of Sciences Wenzhou 325001 China
- Oujiang Laboratory Wenzhou Zhejiang 325000 P. R. China
- Key Laboratory of Optical Technology and Instrument for Medicine, Ministry of Education, University of Shanghai for Science and Technology Shanghai 200093 P. R. China
- State Key Laboratory of Respiratory Disease, Guangzhou Institute of Oral Disease, Stomatology Hospital, School of Biomedical Engineering, Guangzhou Medical University Guangzhou 511436 China
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22
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Li L, Chen G. Precise Assembly of Proteins and Carbohydrates for Next-Generation Biomaterials. J Am Chem Soc 2022; 144:16232-16251. [PMID: 36044681 DOI: 10.1021/jacs.2c04418] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The complexity and diversity of biomacromolecules make them a unique class of building blocks for generating precise assemblies. They are particularly available to a new generation of biomaterials integrated with living systems due to their intrinsic properties such as accurate recognition, self-organization, and adaptability. Therefore, many excellent approaches have been developed, leading to a variety of quite practical outcomes. Here, we review recent advances in the fabrication and application of artificially precise assemblies by employing proteins and carbohydrates as building blocks, followed by our perspectives on some of new challenges, goals, and opportunities for the future research directions in this field.
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Affiliation(s)
- Long Li
- The State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science, Fudan University, Shanghai 200433, People's Republic of China
| | - Guosong Chen
- The State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science, Fudan University, Shanghai 200433, People's Republic of China.,Multiscale Research Institute for Complex Systems, Fudan University, Shanghai 200433, People's Republic of China
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23
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Miller JE, Srinivasan Y, Dharmaraj NP, Liu A, Nguyen PL, Taylor SD, Yeates TO. Designing Protease-Triggered Protein Cages. J Am Chem Soc 2022; 144:12681-12689. [PMID: 35802879 DOI: 10.1021/jacs.2c02165] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Proteins that self-assemble into enclosed polyhedral cages, both naturally and by design, are garnering attention for their prospective utility in the fields of medicine and biotechnology. Notably, their potential for encapsulation and surface display are attractive for experiments that require protection and targeted delivery of cargo. The ability to control their opening or disassembly would greatly advance the development of protein nanocages into widespread molecular tools. Toward the development of protein cages that disassemble in a systematic manner and in response to biologically relevant stimuli, here we demonstrate a modular protein cage system that is opened by highly sequence-specific proteases, based on sequence insertions at strategically chosen loop positions in the protein cage subunits. We probed the generality of the approach in the context of protein cages built using the two prevailing methods of construction: genetic fusion between oligomeric components and (non-covalent) computational interface design between oligomeric components. Our results suggest that the former type of cage may be more amenable than the latter for endowing proteolytically controlled disassembly. We show that a successfully designed cage system, based on oligomeric fusion, is modular with regard to its triggering protease. One version of the cage is targeted by an asparagine protease implicated in cancer and Alzheimer's disease, whereas the second version is responsive to the blood-clotting protease, thrombin. The approach demonstrated here should guide future efforts to develop therapeutic vectors to treat disease states where protease induction or mis-regulation occurs.
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Affiliation(s)
- Justin E Miller
- UCLA Molecular Biology Institute, 611 Charles E. Young Drive East, Los Angeles, California 90095-1570, United States.,UCLA-DOE Institute for Genomics and Proteomics, 611 Charles E. Young Drive East, Los Angeles, California 90095-1570, United States
| | - Yashes Srinivasan
- UCLA Department of Chemistry and Biochemistry, 611 Charles E. Young Drive East, Los Angeles, California 90095, United States
| | - Nithin P Dharmaraj
- UCLA Department of Chemistry and Biochemistry, 611 Charles E. Young Drive East, Los Angeles, California 90095, United States
| | - Andrew Liu
- UCLA Department of Chemistry and Biochemistry, 611 Charles E. Young Drive East, Los Angeles, California 90095, United States
| | - Phillip L Nguyen
- UCLA Department of Chemistry and Biochemistry, 611 Charles E. Young Drive East, Los Angeles, California 90095, United States
| | - Scott D Taylor
- UCLA Department of Chemistry and Biochemistry, 611 Charles E. Young Drive East, Los Angeles, California 90095, United States
| | - Todd O Yeates
- UCLA Molecular Biology Institute, 611 Charles E. Young Drive East, Los Angeles, California 90095-1570, United States.,UCLA-DOE Institute for Genomics and Proteomics, 611 Charles E. Young Drive East, Los Angeles, California 90095-1570, United States.,UCLA Department of Chemistry and Biochemistry, 611 Charles E. Young Drive East, Los Angeles, California 90095, United States
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24
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Zhou K, Mei Z, Lei Y, Guan Z, Mao C, Li Y. Boosted Productivity in Single-Tile-Based DNA Polyhedra Assembly by Simple Cation Replacement. Chembiochem 2022; 23:e202200138. [PMID: 35676202 DOI: 10.1002/cbic.202200138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 06/08/2022] [Indexed: 11/11/2022]
Abstract
Cations such as divalent magnesium ion (Mg2+ ) play an essential role in DNA self-assembly. However, the strong electrostatic shielding effect of Mg2+ would be disadvantageous in some situations that require relatively weak interactions to allow a highly reversible error-correcting mechanism in the process of assembly. Herein, by substituting the conventional divalent Mg2+ with monovalent sodium ion (Na+ ), we have achieved one-pot high-yield assembly of tile-based DNA polyhedra at micromolar concentration of tiles, at least 10 times higher than the DNA concentrations reported previously. This strategy takes advantage of coexisting counterions and is expected to surmount the major obstacle to potential applications of such DNA nanostructures: large-scale production.
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Affiliation(s)
- Kaixuan Zhou
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, 230009, P. R. China
| | - Zhichao Mei
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, 230009, P. R. China
| | - Yunxiang Lei
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, 230009, P. R. China
| | - Zhen Guan
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, 230009, P. R. China
| | - Chengde Mao
- Department of Chemistry, Purdue University, West Lafayette, Indiana, 47907, USA
| | - Yulin Li
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, 230009, P. R. China
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25
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Precision materials: Computational design methods of accurate protein materials. Curr Opin Struct Biol 2022; 74:102367. [DOI: 10.1016/j.sbi.2022.102367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Revised: 02/22/2022] [Accepted: 02/28/2022] [Indexed: 11/23/2022]
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26
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Liu Y, Zang J, Leng X, Zhao G. A short helix regulates conversion of dimeric and 24-meric ferritin architectures. Int J Biol Macromol 2022; 203:535-542. [PMID: 35120932 DOI: 10.1016/j.ijbiomac.2022.01.174] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 01/27/2022] [Accepted: 01/28/2022] [Indexed: 12/28/2022]
Abstract
The inter-subunit interaction at the protein interfaces plays a key role in protein self-assembly, through which enabling protein self-assembly controllable is of great importance for preparing the novel nanoscale protein materials with unexplored properties. Different from normal 24-meric ferritin, archaeal ferritin, Thermotoga maritima ferritin (TmFtn) naturally occurs as a dimer, which can assemble into a 24-mer nanocage induced by salts. However, the regulation mechanism of protein self-assembly underlying this phenomenon remains unclear. Here, a combination of the computational energy simulation and key interface reconstruction revealed that a short helix involved interactions at the C4 interface are mainly responsible for the existence of such dimer. Agreeing with this idea, deletion of such short helix of each subunit triggers it to be a stable dimer, which losses the ability to reassemble into 24-meric ferritin in the presence of salts in solution. Further support for this idea comes from the observation that grafting a small helix from human H ferritin onto archaeal subunit resulted in a stable 24-mer protein nanocage even in the absence of salts. Thus, these findings demonstrate that adjusting the interactions at the protein interfaces appears to be a facile, effective approach to control subunit assembly into different protein architectures.
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Affiliation(s)
- Yu Liu
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing Key Laboratory of Functional Food from Plant Resources, Beijing 100083, China
| | - Jiachen Zang
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing Key Laboratory of Functional Food from Plant Resources, Beijing 100083, China
| | - Xiaojing Leng
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing Key Laboratory of Functional Food from Plant Resources, Beijing 100083, China.
| | - Guanghua Zhao
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing Key Laboratory of Functional Food from Plant Resources, Beijing 100083, China.
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27
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Habibi N, Mauser A, Ko Y, Lahann J. Protein Nanoparticles: Uniting the Power of Proteins with Engineering Design Approaches. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2104012. [PMID: 35077010 PMCID: PMC8922121 DOI: 10.1002/advs.202104012] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 12/12/2021] [Indexed: 05/16/2023]
Abstract
Protein nanoparticles, PNPs, have played a long-standing role in food and industrial applications. More recently, their potential in nanomedicine has been more widely pursued. This review summarizes recent trends related to the preparation, application, and chemical construction of nanoparticles that use proteins as major building blocks. A particular focus has been given to emerging trends related to applications in nanomedicine, an area of research where PNPs are poised for major breakthroughs as drug delivery carriers, particle-based therapeutics or for non-viral gene therapy.
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Affiliation(s)
- Nahal Habibi
- Biointerfaces InstituteDepartment of Chemical EngineeringUniversity of MichiganAnn ArborMI48109USA
| | - Ava Mauser
- Biointerfaces InstituteDepartment of Biomedical EngineeringUniversity of MichiganAnn ArborMI48109USA
| | - Yeongun Ko
- Biointerfaces InstituteDepartment of Chemical EngineeringUniversity of MichiganAnn ArborMI48109USA
| | - Joerg Lahann
- Biointerfaces InstituteDepartments of Chemical EngineeringMaterial Science and EngineeringBiomedical Engineeringand Macromolecular Science and EngineeringUniversity of MichiganAnn ArborMI48109USA
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28
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Villegas JA, Sinha NJ, Teramoto N, Von Bargen CD, Pochan DJ, Saven JG. Computational Design of Single-Peptide Nanocages with Nanoparticle Templating. Molecules 2022; 27:1237. [PMID: 35209027 PMCID: PMC8874777 DOI: 10.3390/molecules27041237] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 02/01/2022] [Accepted: 02/08/2022] [Indexed: 01/25/2023] Open
Abstract
Protein complexes perform a diversity of functions in natural biological systems. While computational protein design has enabled the development of symmetric protein complexes with spherical shapes and hollow interiors, the individual subunits often comprise large proteins. Peptides have also been applied to self-assembly, and it is of interest to explore such short sequences as building blocks of large, designed complexes. Coiled-coil peptides are promising subunits as they have a symmetric structure that can undergo further assembly. Here, an α-helical 29-residue peptide that forms a tetrameric coiled coil was computationally designed to assemble into a spherical cage that is approximately 9 nm in diameter and presents an interior cavity. The assembly comprises 48 copies of the designed peptide sequence. The design strategy allowed breaking the side chain conformational symmetry within the peptide dimer that formed the building block (asymmetric unit) of the cage. Dynamic light scattering (DLS) and transmission electron microscopy (TEM) techniques showed that one of the seven designed peptide candidates assembled into individual nanocages of the size and shape. The stability of assembled nanocages was found to be sensitive to the assembly pathway and final solution conditions (pH and ionic strength). The nanocages templated the growth of size-specific Au nanoparticles. The computational design serves to illustrate the possibility of designing target assemblies with pre-determined specific dimensions using short, modular coiled-coil forming peptide sequences.
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Affiliation(s)
- José A. Villegas
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, USA; (J.A.V.); (C.D.V.B.)
| | - Nairiti J. Sinha
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA; (N.J.S.); (N.T.)
| | - Naozumi Teramoto
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA; (N.J.S.); (N.T.)
| | - Christopher D. Von Bargen
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, USA; (J.A.V.); (C.D.V.B.)
| | - Darrin J. Pochan
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA; (N.J.S.); (N.T.)
| | - Jeffery G. Saven
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, USA; (J.A.V.); (C.D.V.B.)
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29
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Stupka I, Azuma Y, Biela AP, Imamura M, Scheuring S, Pyza E, Woźnicka O, Maskell DP, Heddle JG. Chemically induced protein cage assembly with programmable opening and cargo release. SCIENCE ADVANCES 2022; 8:eabj9424. [PMID: 34985943 PMCID: PMC8730398 DOI: 10.1126/sciadv.abj9424] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 11/16/2021] [Indexed: 06/14/2023]
Abstract
Engineered protein cages are promising tools that can be customized for applications in medicine and nanotechnology. A major challenge is developing a straightforward strategy for endowing cages with bespoke, inducible disassembly. Such cages would allow release of encapsulated cargoes at desired timing and location. Here, we achieve such programmable disassembly using protein cages, in which the subunits are held together by different molecular cross-linkers. This modular system enables cage disassembly to be controlled in a condition-dependent manner. Structural details of the resulting cages were determined using cryo–electron microscopy, which allowed observation of bridging cross-linkers at intended positions. Triggered disassembly was demonstrated by high-speed atomic force microscopy and subsequent cargo release using an encapsulated Förster resonance energy transfer pair whose signal depends on the quaternary structure of the cage.
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Affiliation(s)
- Izabela Stupka
- Malopolska Centre of Biotechnology, Jagiellonian University, 30-387 Krakow, Poland
- Postgraduate School of Molecular Medicine, 02-091 Warsaw, Poland
| | - Yusuke Azuma
- Malopolska Centre of Biotechnology, Jagiellonian University, 30-387 Krakow, Poland
| | - Artur P. Biela
- Malopolska Centre of Biotechnology, Jagiellonian University, 30-387 Krakow, Poland
- Institute of Zoology and Biomedical Research, Faculty of Biology, Jagiellonian University, 30-387 Krakow, Poland
| | - Motonori Imamura
- Department of Anesthesiology, Weill Cornell Medicine, New York City, NY 10065, USA
- Department of Physiology, Biophysics and Systems Biology, Weill Cornell Medicine, New York City, NY 10065, USA
| | - Simon Scheuring
- Department of Anesthesiology, Weill Cornell Medicine, New York City, NY 10065, USA
- Department of Physiology, Biophysics and Systems Biology, Weill Cornell Medicine, New York City, NY 10065, USA
| | - Elżbieta Pyza
- Institute of Zoology and Biomedical Research, Faculty of Biology, Jagiellonian University, 30-387 Krakow, Poland
| | - Olga Woźnicka
- Institute of Zoology and Biomedical Research, Faculty of Biology, Jagiellonian University, 30-387 Krakow, Poland
| | - Daniel P. Maskell
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, UK
| | - Jonathan G. Heddle
- Malopolska Centre of Biotechnology, Jagiellonian University, 30-387 Krakow, Poland
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30
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Bindl D, Mandal PK, Allmendinger L, Huc I. Discrete Stacked Dimers of Aromatic Oligoamide Helices. Angew Chem Int Ed Engl 2021; 61:e202116509. [PMID: 34962351 PMCID: PMC9305948 DOI: 10.1002/anie.202116509] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Indexed: 12/03/2022]
Abstract
Tight binding was observed between the C‐terminal cross section of aromatic oligoamide helices in aqueous solution, leading to the formation of discrete head‐to‐head dimers in slow exchange on the NMR timescale with the corresponding monomers. The nature and structure of the dimers was evidenced by 2D NOESY and DOSY spectroscopy, mass spectrometry and X‐ray crystallography. The binding interface involves a large hydrophobic aromatic surface and hydrogen bonding. Dimerization requires that helices have the same handedness and the presence of a C‐terminal carboxy function. The protonation state of the carboxy group plays a crucial role, resulting in pH dependence of the association. Dimerization is also influenced by neighboring side chains and can be programmed to selectively produce heteromeric aggregates.
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Affiliation(s)
- Daniel Bindl
- LMU München: Ludwig-Maximilians-Universitat Munchen, Pharmacy, GERMANY
| | - Pradeep K Mandal
- LMU München: Ludwig-Maximilians-Universitat Munchen, Pharmacy, GERMANY
| | - Lars Allmendinger
- LMU München: Ludwig-Maximilians-Universitat Munchen, Pharmacy, GERMANY
| | - Ivan Huc
- Ludwig-Maximilians-Universitat Munchen, Pharmacy, Butenandtstraße 5 - 13, 81377, Munich, GERMANY
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31
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Bindl D, Mandal PK, Allmendinger L, Huc I. Discrete Stacked Dimers of Aromatic Oligoamide Helices. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202116509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Daniel Bindl
- LMU München: Ludwig-Maximilians-Universitat Munchen Pharmacy GERMANY
| | - Pradeep K. Mandal
- LMU München: Ludwig-Maximilians-Universitat Munchen Pharmacy GERMANY
| | - Lars Allmendinger
- LMU München: Ludwig-Maximilians-Universitat Munchen Pharmacy GERMANY
| | - Ivan Huc
- Ludwig-Maximilians-Universitat Munchen Pharmacy Butenandtstraße 5 - 13 81377 Munich GERMANY
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32
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Bae J, Kim H, Kim G, Song J, Kim H. Dendrimer-Like Supramolecular Assembly of Proteins with a Tunable Size and Valency Through Stepwise Iterative Growth. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2102991. [PMID: 34719882 PMCID: PMC8693032 DOI: 10.1002/advs.202102991] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 09/15/2021] [Indexed: 06/13/2023]
Abstract
The assembly of proteins in a programmable manner provides insight into the creation of novel functional nanomaterials for practical applications. Despite many advances, however, a rational protein assembly with an easy scalability in terms of size and valency remains a challenge. Here, a simple bottom-up approach to the supramolecular protein assembly with a tunable size and valency in a programmable manner is presented. The dendrimer-like protein assembly, simply called a "protein dendrimer," is constructed through a stepwise and alternate addition of a building block protein. Starting from zeroth-generation protein dendrimer (pG0 ) of 27 kDa, the protein dendrimer is sequentially grown to pG1 , pG2 , pG3 , to pG4 with a molecular mass of 94, 216, 483, and 959 kDa, respectively. The valency of the protein dendrimers at the periphery increases by a factor of two after each generation, allowing a tunable valency and easy functionalization. The protein dendrimers functionalizes with a targeting moiety and a cytotoxic protein cargo shows a typical feature of multi-valency in the avidity and a highly enhanced cellular cytotoxicity, exemplifying their utility as a protein delivery platform. The present approach can be effectively used in the creation of protein architectures with new functions for biotechnological and medical applications.
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Affiliation(s)
- Jin‐Ho Bae
- Department of Biological SciencesKorea Advanced Institute of Science and Technology (KAIST)Daejeon34141Korea
- Present address:
ProEn TherapeuticsSeongnam‐si13105Korea
| | - Hong‐Sik Kim
- Department of Biological SciencesKorea Advanced Institute of Science and Technology (KAIST)Daejeon34141Korea
| | - Gijeong Kim
- Department of Biological SciencesKorea Advanced Institute of Science and Technology (KAIST)Daejeon34141Korea
| | - Ji‐Joon Song
- Department of Biological SciencesKorea Advanced Institute of Science and Technology (KAIST)Daejeon34141Korea
| | - Hak‐Sung Kim
- Department of Biological SciencesKorea Advanced Institute of Science and Technology (KAIST)Daejeon34141Korea
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33
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Sinha NJ, Langenstein MG, Pochan DJ, Kloxin CJ, Saven JG. Peptide Design and Self-assembly into Targeted Nanostructure and Functional Materials. Chem Rev 2021; 121:13915-13935. [PMID: 34709798 DOI: 10.1021/acs.chemrev.1c00712] [Citation(s) in RCA: 93] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Peptides have been extensively utilized to construct nanomaterials that display targeted structure through hierarchical assembly. The self-assembly of both rationally designed peptides derived from naturally occurring domains in proteins as well as intuitively or computationally designed peptides that form β-sheets and helical secondary structures have been widely successful in constructing nanoscale morphologies with well-defined 1-d, 2-d, and 3-d architectures. In this review, we discuss these successes of peptide self-assembly, especially in the context of designing hierarchical materials. In particular, we emphasize the differences in the level of peptide design as an indicator of complexity within the targeted self-assembled materials and highlight future avenues for scientific and technological advances in this field.
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Affiliation(s)
- Nairiti J Sinha
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Matthew G Langenstein
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Darrin J Pochan
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Christopher J Kloxin
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, United States.,Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Jeffery G Saven
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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34
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Zhu J, Avakyan N, Kakkis AA, Hoffnagle AM, Han K, Li Y, Zhang Z, Choi TS, Na Y, Yu CJ, Tezcan FA. Protein Assembly by Design. Chem Rev 2021; 121:13701-13796. [PMID: 34405992 PMCID: PMC9148388 DOI: 10.1021/acs.chemrev.1c00308] [Citation(s) in RCA: 107] [Impact Index Per Article: 35.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Proteins are nature's primary building blocks for the construction of sophisticated molecular machines and dynamic materials, ranging from protein complexes such as photosystem II and nitrogenase that drive biogeochemical cycles to cytoskeletal assemblies and muscle fibers for motion. Such natural systems have inspired extensive efforts in the rational design of artificial protein assemblies in the last two decades. As molecular building blocks, proteins are highly complex, in terms of both their three-dimensional structures and chemical compositions. To enable control over the self-assembly of such complex molecules, scientists have devised many creative strategies by combining tools and principles of experimental and computational biophysics, supramolecular chemistry, inorganic chemistry, materials science, and polymer chemistry, among others. Owing to these innovative strategies, what started as a purely structure-building exercise two decades ago has, in short order, led to artificial protein assemblies with unprecedented structures and functions and protein-based materials with unusual properties. Our goal in this review is to give an overview of this exciting and highly interdisciplinary area of research, first outlining the design strategies and tools that have been devised for controlling protein self-assembly, then describing the diverse structures of artificial protein assemblies, and finally highlighting the emergent properties and functions of these assemblies.
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Affiliation(s)
| | | | - Albert A. Kakkis
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0340, United States
| | - Alexander M. Hoffnagle
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0340, United States
| | - Kenneth Han
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0340, United States
| | - Yiying Li
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0340, United States
| | - Zhiyin Zhang
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0340, United States
| | - Tae Su Choi
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0340, United States
| | - Youjeong Na
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0340, United States
| | - Chung-Jui Yu
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0340, United States
| | - F. Akif Tezcan
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0340, United States
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35
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Hirota S, Mashima T, Kobayashi N. Use of 3D domain swapping in constructing supramolecular metalloproteins. Chem Commun (Camb) 2021; 57:12074-12086. [PMID: 34714300 DOI: 10.1039/d1cc04608j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Supramolecules, which are formed by assembling multiple molecules by noncovalent intermolecular interactions instead of covalent bonds, often show additional properties that cannot be exhibited by a single molecule. Supramolecules have evolved into molecular machines in the field of chemistry, and various supramolecular proteins are responsible for life activities in the field of biology. The design and creation of supramolecular proteins will lead to development of new enzymes, functional biomaterials, drug delivery systems, etc.; thus, the number of studies on the regulation of supramolecular proteins is increasing year by year. Several methods, including disulfide bond, metal coordination, and surface-surface interaction, have been utilized to construct supramolecular proteins. In nature, proteins have been shown to form oligomers by 3D domain swapping (3D-DS), a phenomenon in which a structural region is exchanged between molecules of the same protein. We have been studying the mechanism of 3D-DS and utilizing 3D-DS to construct supramolecular metalloproteins. Cytochrome c forms cyclic oligomers and polymers by 3D-DS, whereas other metalloproteins, such as various c-type cytochromes and azurin form small oligomers and myoglobin forms a compact dimer. We have also utilized 3D-DS to construct heterodimers with different active sites, a protein nanocage encapsulating a Zn-SO4 cluster in the internal cavity, and a tetrahedron with a designed building block protein. Protein oligomer formation was controlled for the 3D-DS dimer of a dimer-monomer transition protein. This article reviews our research on supramolecular metalloproteins.
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Affiliation(s)
- Shun Hirota
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan.
| | - Tsuyoshi Mashima
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan.
| | - Naoya Kobayashi
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan.
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36
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Zeng R, Lv C, Wang C, Zhao G. Bionanomaterials based on protein self-assembly: Design and applications in biotechnology. Biotechnol Adv 2021; 52:107835. [PMID: 34520791 DOI: 10.1016/j.biotechadv.2021.107835] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 09/06/2021] [Accepted: 09/08/2021] [Indexed: 01/13/2023]
Abstract
Elegant protein assembly to generate new biomaterials undergoes extremely rapid development for wide extension of biotechnology applications, which can be a powerful tool not only for creating nanomaterials but also for advancing understanding of the structure of life. Unique biological properties of proteins bestow these artificial biomaterials diverse functions that can permit them to be applied in encapsulation, bioimaging, biocatalysis, biosensors, photosynthetic apparatus, electron transport, magnetogenetic applications, vaccine development and antibodies design. This review gives a perspective view of the latest advances in the construction of protein-based nanomaterials. We initially start with distinguishable, specific interactions to construct sundry nanomaterials through protein self-assembly and concisely expound the assembly mechanism from the design strategy. And then, the design and construction of 0D, 1D, 2D, 3D protein assembled nanomaterials are especially highlighted. Furthermore, the potential applications have been discussed in detail. Overall, this review will illustrate how to fabricate highly sophisticated nanomaterials oriented toward applications in biotechnology based on the rules of supramolecular chemistry.
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Affiliation(s)
- Ruiqi Zeng
- College of Food Science & Nutritional Engineering, China Agricultural University, Key Laboratory of Functional Dairy, Ministry of Education, Beijing 100083, China
| | - Chenyan Lv
- College of Food Science & Nutritional Engineering, China Agricultural University, Key Laboratory of Functional Dairy, Ministry of Education, Beijing 100083, China
| | - Chengtao Wang
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology & Business University, No. 11 Fucheng Road, Haidian District, Beijing 100048, China
| | - Guanghua Zhao
- College of Food Science & Nutritional Engineering, China Agricultural University, Key Laboratory of Functional Dairy, Ministry of Education, Beijing 100083, China.
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37
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Yamanaka M, Mashima T, Ogihara M, Okamoto M, Uchihashi T, Hirota S. Construction of ferritin hydrogels utilizing subunit-subunit interactions. PLoS One 2021; 16:e0259052. [PMID: 34731167 PMCID: PMC8565734 DOI: 10.1371/journal.pone.0259052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Accepted: 10/11/2021] [Indexed: 11/21/2022] Open
Abstract
Various proteins form nanostructures exhibiting unique functions, making them attractive as next-generation materials. Ferritin is a hollow spherical protein that incorporates iron ions. Here, we found that hydrogels are simply formed from concentrated apoferritin solutions by acid denaturation and subsequent neutralization. The water content of the hydrogel was approximately 80%. The apoferritin hydrogel did not decompose in the presence of 1 M HCl, 2-mercaptoethanol, or methanol but was dissolved in the presence of 1 M NaOH, by heating at 80°C, or by treatment with trypsin or 6 M guanidine hydrochloride. The Young’s modulus of the hydrogel was 20.4 ± 12.1 kPa according to local indentation experimentes using atomic force microscopy, indicating that the hydrogel was relatively stiff. Transition electron microscopy measurements revealed that a fibrous network was constructed in the hydrogel. The color of the hydrogel became yellow-brown upon incubation in the presence of Fe3+ ions, indicating that the hydrogel adsorbed the Fe3+ ions. The yellow-brown color of the Fe3+-adsorbed hydrogel did not change upon incubation in pure water, whereas it became pale by incubating it in the presence of 100 mM ethylenediaminetetraacetic acid (EDTA). The apoferritin hydrogel also adsorbed Co2+ and Cu2+ ions and released them in the presence of EDTA, while it adsorbed less Ni2+ ions; more Fe3+ ions adsorbed to the apoferritin hydrogel than other metal ions, indicating that the hydrogel keeps the iron storage characteristic of ferritin. These results demonstrate a new property of ferritin: the ability to form a hydrogel that can adsorb/desorb metal ions, which may be useful in designing future biomaterials.
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Affiliation(s)
- Masaru Yamanaka
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Japan
| | - Tsuyoshi Mashima
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Japan
| | - Michio Ogihara
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Japan
| | - Mei Okamoto
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Japan
| | | | - Shun Hirota
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Japan
- * E-mail:
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38
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Naskalska A, Borzęcka-Solarz K, Różycki J, Stupka I, Bochenek M, Pyza E, Heddle JG. Artificial Protein Cage Delivers Active Protein Cargos to the Cell Interior. Biomacromolecules 2021; 22:4146-4154. [PMID: 34499838 PMCID: PMC8512669 DOI: 10.1021/acs.biomac.1c00630] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
Artificial protein
cages have potential as programmable, protective
carriers of fragile macromolecules to cells. While natural cages and
VLPs have been extensively exploited, the use of artificial cages
to deliver active proteins to cells has not yet been shown. TRAP-cage
is an artificial protein cage with an unusual geometry and extremely
high stability, which can be triggered to break apart in the presence
of cellular reducing agents. Here, we demonstrate that TRAP-cage can
be filled with a protein cargo and decorated with a cell-penetrating
peptide, allowing it to enter cells. Tracking of both the TRAP-cage
and the cargo shows that the protein of interest can be successfully
delivered intracellularly in the active form. These results provide
a valuable proof of concept for the further development of TRAP-cage
as a delivery platform.
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Affiliation(s)
- Antonina Naskalska
- Malopolska Centre of Biotechnology, Jagiellonian University, 30-387 Krakow, Poland
| | | | - Jan Różycki
- Malopolska Centre of Biotechnology, Jagiellonian University, 30-387 Krakow, Poland
| | - Izabela Stupka
- Malopolska Centre of Biotechnology, Jagiellonian University, 30-387 Krakow, Poland.,Postgraduate School of Molecular Medicine, Medical University of Warsaw, Żwirki i Wigury 61, 02-091 Warsaw, Poland
| | - Michał Bochenek
- Malopolska Centre of Biotechnology, Jagiellonian University, 30-387 Krakow, Poland
| | - Elżbieta Pyza
- Institute of Zoology and Biomedical Research, Jagiellonian University, 30-387 Krakow, Poland
| | - Jonathan G Heddle
- Malopolska Centre of Biotechnology, Jagiellonian University, 30-387 Krakow, Poland
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39
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Subramanian RH, Zhu J, Bailey JB, Chiong JA, Li Y, Golub E, Tezcan FA. Design of metal-mediated protein assemblies via hydroxamic acid functionalities. Nat Protoc 2021; 16:3264-3297. [PMID: 34050338 DOI: 10.1038/s41596-021-00535-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 03/15/2021] [Indexed: 02/05/2023]
Abstract
The self-assembly of proteins into sophisticated multicomponent assemblies is a hallmark of all living systems and has spawned extensive efforts in the construction of novel synthetic protein architectures with emergent functional properties. Protein assemblies in nature are formed via selective association of multiple protein surfaces through intricate noncovalent protein-protein interactions, a challenging task to accurately replicate in the de novo design of multiprotein systems. In this protocol, we describe the application of metal-coordinating hydroxamate (HA) motifs to direct the metal-mediated assembly of polyhedral protein architectures and 3D crystalline protein-metal-organic frameworks (protein-MOFs). This strategy has been implemented using an asymmetric cytochrome cb562 monomer through selective, concurrent association of Fe3+ and Zn2+ ions to form polyhedral cages. Furthermore, the use of ditopic HA linkers as bridging ligands with metal-binding protein nodes has allowed the construction of crystalline 3D protein-MOF lattices. The protocol is divided into two major sections: (1) the development of a Cys-reactive HA molecule for protein derivatization and self-assembly of protein-HA conjugates into polyhedral cages and (2) the synthesis of ditopic HA bridging ligands for the construction of ferritin-based protein-MOFs using symmetric metal-binding protein nodes. Protein cages are analyzed using analytical ultracentrifugation, transmission electron microscopy and single-crystal X-ray diffraction techniques. HA-mediated protein-MOFs are formed in sitting-drop vapor diffusion crystallization trays and are probed via single-crystal X-ray diffraction and multi-crystal small-angle X-ray scattering measurements. Ligand synthesis, construction of HA-mediated assemblies, and post-assembly analysis as described in this protocol can be performed by a graduate-level researcher within 6 weeks.
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Affiliation(s)
- Rohit H Subramanian
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA, USA
| | - Jie Zhu
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA, USA
| | - Jake B Bailey
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA, USA
| | - Jerika A Chiong
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA, USA
| | - Yiying Li
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA, USA
| | - Eyal Golub
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA, USA
| | - F Akif Tezcan
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA, USA. .,Materials Science and Engineering, University of California, San Diego, La Jolla, CA, USA.
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40
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Oerlemans RAJF, Timmermans SBPE, van Hest JCM. Artificial Organelles: Towards Adding or Restoring Intracellular Activity. Chembiochem 2021; 22:2051-2078. [PMID: 33450141 PMCID: PMC8252369 DOI: 10.1002/cbic.202000850] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 01/15/2021] [Indexed: 12/15/2022]
Abstract
Compartmentalization is one of the main characteristics that define living systems. Creating a physically separated microenvironment allows nature a better control over biological processes, as is clearly specified by the role of organelles in living cells. Inspired by this phenomenon, researchers have developed a range of different approaches to create artificial organelles: compartments with catalytic activity that add new function to living cells. In this review we will discuss three complementary lines of investigation. First, orthogonal chemistry approaches are discussed, which are based on the incorporation of catalytically active transition metal-containing nanoparticles in living cells. The second approach involves the use of premade hybrid nanoreactors, which show transient function when taken up by living cells. The third approach utilizes mostly genetic engineering methods to create bio-based structures that can be ultimately integrated with the cell's genome to make them constitutively active. The current state of the art and the scope and limitations of the field will be highlighted with selected examples from the three approaches.
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Affiliation(s)
- Roy A. J. F. Oerlemans
- Bio-Organic Chemistry Research GroupInstitute for Complex Molecular SystemsEindhoven University of TechnologyP.O. Box 513 (STO3.41)5600 MBEindhovenThe Netherlands
| | - Suzanne B. P. E. Timmermans
- Bio-Organic Chemistry Research GroupInstitute for Complex Molecular SystemsEindhoven University of TechnologyP.O. Box 513 (STO3.41)5600 MBEindhovenThe Netherlands
| | - Jan C. M. van Hest
- Bio-Organic Chemistry Research GroupInstitute for Complex Molecular SystemsEindhoven University of TechnologyP.O. Box 513 (STO3.41)5600 MBEindhovenThe Netherlands
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41
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Generation of ordered protein assemblies using rigid three-body fusion. Proc Natl Acad Sci U S A 2021; 118:2015037118. [PMID: 34074752 DOI: 10.1073/pnas.2015037118] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Protein nanomaterial design is an emerging discipline with applications in medicine and beyond. A long-standing design approach uses genetic fusion to join protein homo-oligomer subunits via α-helical linkers to form more complex symmetric assemblies, but this method is hampered by linker flexibility and a dearth of geometric solutions. Here, we describe a general computational method for rigidly fusing homo-oligomer and spacer building blocks to generate user-defined architectures that generates far more geometric solutions than previous approaches. The fusion junctions are then optimized using Rosetta to minimize flexibility. We apply this method to design and test 92 dihedral symmetric protein assemblies using a set of designed homodimers and repeat protein building blocks. Experimental validation by native mass spectrometry, small-angle X-ray scattering, and negative-stain single-particle electron microscopy confirms the assembly states for 11 designs. Most of these assemblies are constructed from designed ankyrin repeat proteins (DARPins), held in place on one end by α-helical fusion and on the other by a designed homodimer interface, and we explored their use for cryogenic electron microscopy (cryo-EM) structure determination by incorporating DARPin variants selected to bind targets of interest. Although the target resolution was limited by preferred orientation effects and small scaffold size, we found that the dual anchoring strategy reduced the flexibility of the target-DARPIN complex with respect to the overall assembly, suggesting that multipoint anchoring of binding domains could contribute to cryo-EM structure determination of small proteins.
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42
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Nguyen B, Tolia NH. Protein-based antigen presentation platforms for nanoparticle vaccines. NPJ Vaccines 2021; 6:70. [PMID: 33986287 PMCID: PMC8119681 DOI: 10.1038/s41541-021-00330-7] [Citation(s) in RCA: 109] [Impact Index Per Article: 36.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 03/22/2021] [Indexed: 02/08/2023] Open
Abstract
Modern vaccine design has sought a minimalization approach, moving to the isolation of antigens from pathogens that invoke a strong neutralizing immune response. This approach has created safer vaccines but may limit vaccine efficacy due to poor immunogenicity. To combat global diseases such as COVID-19, malaria, and AIDS there is a clear urgency for more effective next-generation vaccines. One approach to improve the immunogenicity of vaccines is the use of nanoparticle platforms that present a repetitive array of antigen on its surface. This technology has been shown to improve antigen presenting cell uptake, lymph node trafficking, and B-cell activation through increased avidity and particle size. With a focus on design, we summarize natural platforms, methods of antigen attachment, and advancements in generating self-assembly that have led to new engineered platforms. We further examine critical parameters that will direct the usage and development of more effective platforms.
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Affiliation(s)
- Brian Nguyen
- Laboratory of Malaria Immunology and Vaccinology, National Institute of Allergy and Infectious Diseases, National Institute of Health, Bethesda, MD, USA
| | - Niraj H Tolia
- Laboratory of Malaria Immunology and Vaccinology, National Institute of Allergy and Infectious Diseases, National Institute of Health, Bethesda, MD, USA.
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43
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Zhou S, He P, Dhindwal S, Grum-Tokars VL, Li Y, Parker K, Modica JA, Bleher R, Dos Reis R, Zuchniarz J, Dravid VP, Voth GA, Roux B, Mrksich M. Synthesis, Characterization, and Simulation of Four-Armed Megamolecules. Biomacromolecules 2021; 22:2363-2372. [PMID: 33979120 DOI: 10.1021/acs.biomac.1c00118] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This paper describes the synthesis, characterization, and modeling of a series of molecules having four protein domains attached to a central core. The molecules were assembled with the "megamolecule" strategy, wherein enzymes react with their covalent inhibitors that are substituted on a linker. Three linkers were synthesized, where each had four oligo(ethylene glycol)-based arms terminated in a para-nitrophenyl phosphonate group that is a covalent inhibitor for cutinase. This enzyme is a serine hydrolase and reacts efficiently with the phosphonate to give a new ester linkage at the Ser-120 residue in the active site of the enzyme. Negative-stain transmission electron microscopy (TEM) images confirmed the architecture of the four-armed megamolecules. These cutinase tetramers were also characterized by X-ray crystallography, which confirmed the active-site serine-phosphonate linkage by electron-density maps. Molecular dynamics simulations of the tetracutinase megamolecules using three different force field setups were performed and compared with the TEM observations. Using the Amberff99SB-disp + pH7 force field, the two-dimensional projection distances of the megamolecules were found to agree with the measured dimensions from TEM. The study described here, which combines high-resolution characterization with molecular dynamics simulations, will lead to a comprehensive understanding of the molecular structures and dynamics for this new class of molecules.
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Affiliation(s)
- Shengwang Zhou
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Peng He
- Department of Chemistry, Chicago Center for Theoretical Chemistry, James Franck Institute, and Institute for Biophysical Dynamics, The University of Chicago, Chicago, Illinois 60637, United States
| | - Sonali Dhindwal
- Department of Materials Science, Northwestern University, Evanston, Illinois 60208, United States
| | - Valerie L Grum-Tokars
- Department of Molecular Pharmacology and Biological Chemistry, Northwestern University, Chicago, Illinois 60611, United States
| | - Ying Li
- Department of Biochemistry and Molecular Biology, University of Chicago, Chicago, Illinois 60637, United States
| | - Kelly Parker
- Department of Materials Science, Northwestern University, Evanston, Illinois 60208, United States
| | - Justin A Modica
- Departments of Chemistry and Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Reiner Bleher
- Department of Materials Science, Northwestern University, Evanston, Illinois 60208, United States
| | - Roberto Dos Reis
- Department of Materials Science, Northwestern University, Evanston, Illinois 60208, United States
| | - Joshua Zuchniarz
- Department of Chemistry, Chicago Center for Theoretical Chemistry, James Franck Institute, and Institute for Biophysical Dynamics, The University of Chicago, Chicago, Illinois 60637, United States
| | - Vinayak P Dravid
- Department of Materials Science, Northwestern University, Evanston, Illinois 60208, United States
| | - Gregory A Voth
- Department of Chemistry, Chicago Center for Theoretical Chemistry, James Franck Institute, and Institute for Biophysical Dynamics, The University of Chicago, Chicago, Illinois 60637, United States
| | - Benoît Roux
- Department of Biochemistry and Molecular Biology, University of Chicago, Chicago, Illinois 60637, United States
| | - Milan Mrksich
- Departments of Chemistry and Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, United States
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44
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Khmelinskaia A, Wargacki A, King NP. Structure-based design of novel polyhedral protein nanomaterials. Curr Opin Microbiol 2021; 61:51-57. [PMID: 33784513 DOI: 10.1016/j.mib.2021.03.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 03/05/2021] [Accepted: 03/11/2021] [Indexed: 02/06/2023]
Abstract
Organizing matter at the atomic scale is a central goal of nanotechnology. Bottom-up approaches, in which molecular building blocks are programmed to assemble via supramolecular interactions, are a proven and versatile route to new and useful nanomaterials. Although a wide variety of molecules have been used as building blocks, proteins have several intrinsic features that present unique opportunities for designing nanomaterials with sophisticated functions. There has been tremendous recent progress in designing proteins to fold and assemble to highly ordered structures. Here we review the leading approaches to the design of closed polyhedral protein assemblies, highlight the importance of considering the assembly process itself, and discuss various applications and future directions for the field. We emphasize throughout the exciting opportunities presented by recent advances as well as challenges that remain.
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Affiliation(s)
- Alena Khmelinskaia
- Department of Biochemistry and Institute for Protein Design, University of Washington, Seattle, WA, USA
| | - Adam Wargacki
- Department of Biochemistry and Institute for Protein Design, University of Washington, Seattle, WA, USA
| | - Neil P King
- Department of Biochemistry and Institute for Protein Design, University of Washington, Seattle, WA, USA.
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45
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Abstract
Significant advances in enzyme discovery, protein and reaction engineering have transformed biocatalysis into a viable technology for the industrial scale manufacturing of chemicals. Multi-enzyme catalysis has emerged as a new frontier for the synthesis of complex chemicals. However, the in vitro operation of multiple enzymes simultaneously in one vessel poses challenges that require new strategies for increasing the operational performance of enzymatic cascade reactions. Chief among those strategies is enzyme co-immobilization. This review will explore how advances in synthetic biology and protein engineering have led to bioinspired co-localization strategies for the scaffolding and compartmentalization of enzymes. Emphasis will be placed on genetically encoded co-localization mechanisms as platforms for future autonomously self-organizing biocatalytic systems. Such genetically programmable systems could be produced by cell factories or emerging cell-free systems. Challenges and opportunities towards self-assembling, multifunctional biocatalytic materials will be discussed.
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46
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Laniado J, Cannon KA, Miller JE, Sawaya MR, McNamara DE, Yeates TO. Geometric Lessons and Design Strategies for Nanoscale Protein Cages. ACS NANO 2021; 15:4277-4286. [PMID: 33683103 DOI: 10.1021/acsnano.0c07167] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Protein molecules bring a rich functionality to the field of designed nanoscale architectures. High-symmetry protein cages are rapidly finding diverse applications in biomedicine, nanotechnology, and imaging, but methods for their reliable and predictable construction remain challenging. In this study we introduce an approach for designing protein assemblies that combines ideas and favorable elements adapted from recent work. Cubically symmetric cages can be created by combining two simpler symmetries, following recently established principles. Here, two different oligomeric protein components are brought together in a geometrically specific arrangement by their separate genetic fusion to individual components of a heterodimeric coiled-coil polypeptide motif of known structure. Fusions between components are made by continuous α-helices to limit flexibility. After a computational design, we tested 10 different protein cage constructions experimentally, two of which formed larger assemblies. One produced the intended octahedral cage, ∼26 nm in diameter, while the other appeared to produce the intended tetrahedral cage as a minor component, crystallizing instead in an alternate form representing a collapsed structure of lower stoichiometry and symmetry. Geometric distinctions between the two characterized designs help explain the different degrees of success, leading to clearer principles and improved prospects for the routine creation of nanoscale protein architectures using diverse methods.
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Affiliation(s)
- Joshua Laniado
- Molecular Biology Institute, UCLA, Los Angeles, California 90095, United States
| | - Kevin A Cannon
- Institute for Genomics and Proteomics, UCLA-DOE, Los Angeles, California 90095, United States
| | - Justin E Miller
- Molecular Biology Institute, UCLA, Los Angeles, California 90095, United States
| | - Michael R Sawaya
- Institute for Genomics and Proteomics, UCLA-DOE, Los Angeles, California 90095, United States
| | - Dan E McNamara
- Department of Chemistry and Biochemistry, UCLA, Los Angeles, California 90095, United States
| | - Todd O Yeates
- Molecular Biology Institute, UCLA, Los Angeles, California 90095, United States
- Institute for Genomics and Proteomics, UCLA-DOE, Los Angeles, California 90095, United States
- Department of Chemistry and Biochemistry, UCLA, Los Angeles, California 90095, United States
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47
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Lv C, Zhang X, Liu Y, Zhang T, Chen H, Zang J, Zheng B, Zhao G. Redesign of protein nanocages: the way from 0D, 1D, 2D to 3D assembly. Chem Soc Rev 2021; 50:3957-3989. [PMID: 33587075 DOI: 10.1039/d0cs01349h] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Compartmentalization is a hallmark of living systems. Through compartmentalization, ubiquitous protein nanocages such as viral capsids, ferritin, small heat shock proteins, and DNA-binding proteins from starved cells fulfill a variety of functions, while their shell-like structures hold great promise for various applications in the field of nanomedicine and nanotechnology. However, the number and structure of natural protein nanocages are limited, and these natural protein nanocages may not be suited for a given application, which might impede their further application as nanovehicles, biotemplates or building blocks. To overcome these shortcomings, different strategies have been developed by scientists to construct artificial protein nanocages, and 1D, 2D and 3D protein arrays with protein nanocages as building blocks through genetic and chemical modification to rival the size and functionality of natural protein nanocages. This review outlines the recent advances in the field of the design and construction of artificial protein nanocages and their assemblies with higher order, summarizes the strategies for creating the assembly of protein nanocages from zero-dimension to three dimensions, and introduces their corresponding applications in the preparation of nanomaterials, electrochemistry, and drug delivery. The review will highlight the roles of both the inter-subunit/intermolecular interactions at the key interface and the protein symmetry in constructing and controlling protein nanocage assemblies with different dimensions.
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Affiliation(s)
- Chenyan Lv
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing Key Laboratory of Functional Food from Plant Resources, Beijing 100083, China.
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48
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Lapenta F, Aupič J, Vezzoli M, Strmšek Ž, Da Vela S, Svergun DI, Carazo JM, Melero R, Jerala R. Self-assembly and regulation of protein cages from pre-organised coiled-coil modules. Nat Commun 2021; 12:939. [PMID: 33574245 PMCID: PMC7878516 DOI: 10.1038/s41467-021-21184-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 01/13/2021] [Indexed: 11/09/2022] Open
Abstract
Coiled-coil protein origami (CCPO) is a modular strategy for the de novo design of polypeptide nanostructures. CCPO folds are defined by the sequential order of concatenated orthogonal coiled-coil (CC) dimer-forming peptides, where a single-chain protein is programmed to fold into a polyhedral cage. Self-assembly of CC-based nanostructures from several chains, similarly as in DNA nanotechnology, could facilitate the design of more complex assemblies and the introduction of functionalities. Here, we show the design of a de novo triangular bipyramid fold comprising 18 CC-forming segments and define the strategy for the two-chain self-assembly of the bipyramidal cage from asymmetric and pseudo-symmetric pre-organised structural modules. In addition, by introducing a protease cleavage site and masking the interfacial CC-forming segments in the two-chain bipyramidal cage, we devise a proteolysis-mediated conformational switch. This strategy could be extended to other modular protein folds, facilitating the construction of dynamic multi-chain CC-based complexes. Coiled-coil protein origami is a strategy for the de novo design of polypeptide nanostructures based on coiled-coil dimer forming peptides, where a single chain protein folds into a polyhedral cage. Here, the authors design a single-chain triangular bipyramid and also demonstrate that the bipyramid can be self-assembled as a heterodimeric complex, comprising pre-defined subunits.
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Affiliation(s)
- Fabio Lapenta
- Department of Synthetic Biology and Immunology, National Institute of Chemistry, Ljubljana, Slovenia.,EN-FIST Centre of Excellence, Ljubljana, Slovenia
| | - Jana Aupič
- Department of Synthetic Biology and Immunology, National Institute of Chemistry, Ljubljana, Slovenia
| | - Marco Vezzoli
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Žiga Strmšek
- Department of Synthetic Biology and Immunology, National Institute of Chemistry, Ljubljana, Slovenia
| | | | | | | | - Roberto Melero
- Centro Nacional de Biotecnología (CNB-CSIC), Madrid, Spain
| | - Roman Jerala
- Department of Synthetic Biology and Immunology, National Institute of Chemistry, Ljubljana, Slovenia. .,EN-FIST Centre of Excellence, Ljubljana, Slovenia.
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49
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Asymmetrizing an icosahedral virus capsid by hierarchical assembly of subunits with designed asymmetry. Nat Commun 2021; 12:589. [PMID: 33500404 PMCID: PMC7838286 DOI: 10.1038/s41467-020-20862-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 12/07/2020] [Indexed: 11/08/2022] Open
Abstract
Symmetrical protein complexes are ubiquitous in biology. Many have been re-engineered for chemical and medical applications. Viral capsids and their assembly are frequent platforms for these investigations. A means to create asymmetric capsids may expand applications. Here, starting with homodimeric Hepatitis B Virus capsid protein, we develop a heterodimer, design a hierarchical assembly pathway, and produce asymmetric capsids. In the heterodimer, the two halves have different growth potentials and assemble into hexamers. These preformed hexamers can nucleate co-assembly with other dimers, leading to Janus-like capsids with a small discrete hexamer patch. We can remove the patch specifically and observe asymmetric holey capsids by cryo-EM reconstruction. The resulting hole in the surface can be refilled with fluorescently labeled dimers to regenerate an intact capsid. In this study, we show how an asymmetric subunit can be used to generate an asymmetric particle, creating the potential for a capsid with different surface chemistries.
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Ree BJ, Mato Y, Xiang L, Kim J, Isono T, Satoh T. Topologically controlled phase transitions and nanoscale film self-assemblies of cage poly(ε-caprolactone) and its counterparts. Polym Chem 2021. [DOI: 10.1039/d0py01567a] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Here we report the first quantitative investigation of nanoscale film morphologies of a cage-shaped poly(ε-caprolactone) and its counterparts in star, cyclic, and linear topologies through synchrotron grazing incidence X-ray scattering analysis.
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Affiliation(s)
- Brian J. Ree
- Faculty of Engineering
- Hokkaido University
- Sapporo 060-8628
- Japan
| | - Yoshinobu Mato
- Graduate School of Chemical Sciences and Engineering
- Hokkaido University
- Sapporo 060-8628
- Japan
| | - Li Xiang
- Department of Chemistry
- Pohang University of Science and Technology
- Pohang 37673
- Republic of Korea
| | - Jehan Kim
- PLS-II Beamline Division
- Pohang Accelerator Laboratory
- Pohang 37673
- Republic of Korea
| | - Takuya Isono
- Faculty of Engineering
- Hokkaido University
- Sapporo 060-8628
- Japan
| | - Toshifumi Satoh
- Faculty of Engineering
- Hokkaido University
- Sapporo 060-8628
- Japan
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