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Cereghetti G, Kissling VM, Koch LM, Arm A, Schmidt CC, Thüringer Y, Zamboni N, Afanasyev P, Linsenmeier M, Eichmann C, Kroschwald S, Zhou J, Cao Y, Pfizenmaier DM, Wiegand T, Cadalbert R, Gupta G, Boehringer D, Knowles TPJ, Mezzenga R, Arosio P, Riek R, Peter M. An evolutionarily conserved mechanism controls reversible amyloids of pyruvate kinase via pH-sensing regions. Dev Cell 2024:S1534-5807(24)00271-5. [PMID: 38788715 DOI: 10.1016/j.devcel.2024.04.018] [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: 06/01/2022] [Revised: 10/15/2023] [Accepted: 04/26/2024] [Indexed: 05/26/2024]
Abstract
Amyloids are known as irreversible aggregates associated with neurodegenerative diseases. However, recent evidence shows that a subset of amyloids can form reversibly and fulfill essential cellular functions. Yet, the molecular mechanisms regulating functional amyloids and distinguishing them from pathological aggregates remain unclear. Here, we investigate the conserved principles of amyloid reversibility by studying the essential metabolic enzyme pyruvate kinase (PK) in yeast and human cells. We demonstrate that yeast PK (Cdc19) and human PK (PKM2) form reversible amyloids through a pH-sensitive amyloid core. Stress-induced cytosolic acidification promotes aggregation via protonation of specific glutamate (yeast) or histidine (human) residues within the amyloid core. Mutations mimicking protonation cause constitutive PK aggregation, while non-protonatable PK mutants remain soluble even upon stress. Physiological PK aggregation is coupled to metabolic rewiring and glycolysis arrest, causing severe growth defects when misregulated. Our work thus identifies an evolutionarily conserved, potentially widespread mechanism regulating functional amyloids during stress.
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Affiliation(s)
- Gea Cereghetti
- Institute of Biochemistry, Department of Biology, ETH Zürich, 8093 Zürich, Switzerland; Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, CB2 1EW Cambridge, UK.
| | - Vera M Kissling
- Institute of Biochemistry, Department of Biology, ETH Zürich, 8093 Zürich, Switzerland; Particles-Biology Interactions Laboratory, Department of Materials Meet Life, Empa, 9014 St. Gallen, Switzerland
| | - Lisa M Koch
- Institute of Biochemistry, Department of Biology, ETH Zürich, 8093 Zürich, Switzerland
| | - Alexandra Arm
- Institute of Biochemistry, Department of Biology, ETH Zürich, 8093 Zürich, Switzerland
| | - Claudia C Schmidt
- Institute of Biochemistry, Department of Biology, ETH Zürich, 8093 Zürich, Switzerland
| | - Yannik Thüringer
- Institute of Biochemistry, Department of Biology, ETH Zürich, 8093 Zürich, Switzerland
| | - Nicola Zamboni
- Institute of Molecular Systems Biology, Department of Biology, ETH Zürich, 8093 Zürich, Switzerland
| | - Pavel Afanasyev
- Cryo-EM Knowledge Hub (CEMK), ETH Zurich, 8093 Zürich, Switzerland
| | - Miriam Linsenmeier
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zürich, 8093 Zürich, Switzerland
| | - Cédric Eichmann
- Laboratory of Physical Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, 8093 Zürich, Switzerland
| | - Sonja Kroschwald
- Institute of Biochemistry, Department of Biology, ETH Zürich, 8093 Zürich, Switzerland
| | - Jiangtao Zhou
- Department of Health Sciences & Technology, ETH Zürich, 8092 Zürich, Switzerland
| | - Yiping Cao
- Department of Health Sciences & Technology, ETH Zürich, 8092 Zürich, Switzerland
| | - Dorota M Pfizenmaier
- Institute of Biochemistry, Department of Biology, ETH Zürich, 8093 Zürich, Switzerland
| | - Thomas Wiegand
- Laboratory of Physical Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, 8093 Zürich, Switzerland; Max Planck Institute for Chemical Energy Conversion, 45470 Mülheim an der Ruhr, Germany; Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, 52074 Aachen, Germany
| | - Riccardo Cadalbert
- Laboratory of Physical Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, 8093 Zürich, Switzerland
| | - Govind Gupta
- Particles-Biology Interactions Laboratory, Department of Materials Meet Life, Empa, 9014 St. Gallen, Switzerland
| | | | - Tuomas P J Knowles
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, CB2 1EW Cambridge, UK
| | - Raffaele Mezzenga
- Department of Health Sciences & Technology, ETH Zürich, 8092 Zürich, Switzerland
| | - Paolo Arosio
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zürich, 8093 Zürich, Switzerland
| | - Roland Riek
- Laboratory of Physical Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, 8093 Zürich, Switzerland
| | - Matthias Peter
- Institute of Biochemistry, Department of Biology, ETH Zürich, 8093 Zürich, Switzerland.
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2
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Marijan D, Momchilova EA, Burns D, Chandhok S, Zapf R, Wille H, Potoyan DA, Audas TE. Protein thermal sensing regulates physiological amyloid aggregation. Nat Commun 2024; 15:1222. [PMID: 38336721 PMCID: PMC10858206 DOI: 10.1038/s41467-024-45536-0] [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: 05/24/2023] [Accepted: 01/25/2024] [Indexed: 02/12/2024] Open
Abstract
To survive, cells must respond to changing environmental conditions. One way that eukaryotic cells react to harsh stimuli is by forming physiological, RNA-seeded subnuclear condensates, termed amyloid bodies (A-bodies). The molecular constituents of A-bodies induced by different stressors vary significantly, suggesting this pathway can tailor the cellular response by selectively aggregating a subset of proteins under a given condition. Here, we identify critical structural elements that regulate heat shock-specific amyloid aggregation. Our data demonstrates that manipulating structural pockets in constituent proteins can either induce or restrict their A-body targeting at elevated temperatures. We propose a model where selective aggregation within A-bodies is mediated by the thermal stability of a protein, with temperature-sensitive structural regions acting as an intrinsic form of post-translational regulation. This system would provide cells with a rapid and stress-specific response mechanism, to tightly control physiological amyloid aggregation or other cellular stress response pathways.
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Affiliation(s)
- Dane Marijan
- Department of Molecular Biology and Biochemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC, V5A 1S6, Canada
- Centre for Cell Biology, Development, and Disease, Simon Fraser University, 8888 University Drive, Burnaby, BC, V5A 1S6, Canada
| | - Evgenia A Momchilova
- Department of Molecular Biology and Biochemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC, V5A 1S6, Canada
- Centre for Cell Biology, Development, and Disease, Simon Fraser University, 8888 University Drive, Burnaby, BC, V5A 1S6, Canada
| | - Daniel Burns
- Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, IA, 50011, USA
| | - Sahil Chandhok
- Department of Molecular Biology and Biochemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC, V5A 1S6, Canada
- Centre for Cell Biology, Development, and Disease, Simon Fraser University, 8888 University Drive, Burnaby, BC, V5A 1S6, Canada
| | - Richard Zapf
- Department of Molecular Biology and Biochemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC, V5A 1S6, Canada
- Centre for Cell Biology, Development, and Disease, Simon Fraser University, 8888 University Drive, Burnaby, BC, V5A 1S6, Canada
| | - Holger Wille
- Department of Biochemistry, University of Alberta, Edmonton, Alberta, T6G 2H7, Canada
- Centre for Prions and Protein Folding Diseases, University of Alberta, Edmonton, Alberta, T6G 2M8, Canada
- Neuroscience and Mental Health Institute, University of Alberta, Edmonton, Alberta, T6G 2E1, Canada
| | - Davit A Potoyan
- Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, IA, 50011, USA
- Department of Chemistry, Iowa State University, Ames, IA, 50011, USA
| | - Timothy E Audas
- Department of Molecular Biology and Biochemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC, V5A 1S6, Canada.
- Centre for Cell Biology, Development, and Disease, Simon Fraser University, 8888 University Drive, Burnaby, BC, V5A 1S6, Canada.
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3
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Cardoso P, Appiah Danso S, Hung A, Dekiwadia C, Pradhan N, Strachan J, McDonald B, Firipis K, White JF, Aburto-Medina A, Conn CE, Valéry C. Rational design of potent ultrashort antimicrobial peptides with programmable assembly into nanostructured hydrogels. Front Chem 2023; 10:1009468. [PMID: 36712988 PMCID: PMC9881724 DOI: 10.3389/fchem.2022.1009468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 12/12/2022] [Indexed: 01/15/2023] Open
Abstract
Microbial resistance to common antibiotics is threatening to cause the next pandemic crisis. In this context, antimicrobial peptides (AMPs) are receiving increased attention as an alternative approach to the traditional small molecule antibiotics. Here, we report the bi-functional rational design of Fmoc-peptides as both antimicrobial and hydrogelator substances. The tetrapeptide Fmoc-WWRR-NH2-termed Priscilicidin-was rationally designed for antimicrobial activity and molecular self-assembly into nanostructured hydrogels. Molecular dynamics simulations predicted Priscilicidin to assemble in water into small oligomers and nanofibrils, through a balance of aromatic stacking, amphiphilicity and electrostatic repulsion. Antimicrobial activity prediction databases supported a strong antimicrobial motif via sequence analogy. Experimentally, this ultrashort sequence showed a remarkable hydrogel forming capacity, combined to a potent antibacterial and antifungal activity, including against multidrug resistant strains. Using a set of biophysical and microbiology techniques, the peptide was shown to self-assemble into viscoelastic hydrogels, as a result of assembly into nanostructured hexagonal mesophases. To further test the molecular design approach, the Priscilicidin sequence was modified to include a proline turn-Fmoc-WPWRR-NH2, termed P-Priscilicidin-expected to disrupt the supramolecular assembly into nanofibrils, while predicted to retain antimicrobial activity. Experiments showed P-Priscilicidin self-assembly to be effectively hindered by the presence of a proline turn, resulting in liquid samples of low viscosity. However, assembly into small oligomers and nanofibril precursors were evidenced. Our results augur well for fast, adaptable, and cost-efficient antimicrobial peptide design with programmable physicochemical properties.
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Affiliation(s)
- Priscila Cardoso
- School of Health and Biomedical Sciences, Translational Immunology and Nanotechnology Theme, NanoBioPharm Research Group, RMIT University, Bundoora, VIC, Australia,School of Science, STEM College, RMIT University, Melbourne, VIC, Australia
| | - Samuel Appiah Danso
- School of Health and Biomedical Sciences, Translational Immunology and Nanotechnology Theme, NanoBioPharm Research Group, RMIT University, Bundoora, VIC, Australia,Materials Characterisation and Modelling, Manufacturing, CSIRO, Clayton, VIC, Australia
| | - Andrew Hung
- School of Science, STEM College, RMIT University, Melbourne, VIC, Australia
| | - Chaitali Dekiwadia
- RMIT Microscopy and Microanalysis Facility (RMMF), RMIT University, Melbourne, VIC, Australia
| | - Nimish Pradhan
- School of Health and Biomedical Sciences, Translational Immunology and Nanotechnology Theme, NanoBioPharm Research Group, RMIT University, Bundoora, VIC, Australia
| | - Jamie Strachan
- School of Health and Biomedical Sciences, Translational Immunology and Nanotechnology Theme, NanoBioPharm Research Group, RMIT University, Bundoora, VIC, Australia,School of Science, STEM College, RMIT University, Melbourne, VIC, Australia
| | - Brody McDonald
- School of Health and Biomedical Sciences, Translational Immunology and Nanotechnology Theme, NanoBioPharm Research Group, RMIT University, Bundoora, VIC, Australia
| | - Kate Firipis
- BioFab3D, Aikenhead Centre for Medical Discovery, St Vincent’s Hospital Melbourne, Fitzroy, VIC, Australia,Biomedical and Electrical Engineering, School of Engineering, RMIT University, Melbourne, VIC, Australia
| | - Jacinta F. White
- Materials Characterisation and Modelling, Manufacturing, CSIRO, Clayton, VIC, Australia
| | | | - Charlotte E. Conn
- School of Science, STEM College, RMIT University, Melbourne, VIC, Australia
| | - Céline Valéry
- School of Health and Biomedical Sciences, Translational Immunology and Nanotechnology Theme, NanoBioPharm Research Group, RMIT University, Bundoora, VIC, Australia,*Correspondence: Céline Valéry,
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Neurotoxic amyloidogenic peptides in the proteome of SARS-COV2: potential implications for neurological symptoms in COVID-19. Nat Commun 2022; 13:3387. [PMID: 35697699 PMCID: PMC9189797 DOI: 10.1038/s41467-022-30932-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 05/18/2022] [Indexed: 01/04/2023] Open
Abstract
COVID-19 is primarily known as a respiratory disease caused by SARS-CoV-2. However, neurological symptoms such as memory loss, sensory confusion, severe headaches, and even stroke are reported in up to 30% of cases and can persist even after the infection is over (long COVID). These neurological symptoms are thought to be produced by the virus infecting the central nervous system, however we don’t understand the molecular mechanisms triggering them. The neurological effects of COVID-19 share similarities to neurodegenerative diseases in which the presence of cytotoxic aggregated amyloid protein or peptides is a common feature. Following the hypothesis that some neurological symptoms of COVID-19 may also follow an amyloid etiology we identified two peptides from the SARS-CoV-2 proteome that self-assemble into amyloid assemblies. Furthermore, these amyloids were shown to be highly toxic to neuronal cells. We suggest that cytotoxic aggregates of SARS-CoV-2 proteins may trigger neurological symptoms in COVID-19. Here the authors report the formation of toxic clumps of protein, similar to amyloid assemblies found in Alzheimer’s disease and suggest their possible role for some of the neurological symptoms of long-COVID.
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5
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Lipid membrane-mediated assembly of the functional amyloid-forming peptide Somatostatin-14. Biophys Chem 2022; 287:106830. [DOI: 10.1016/j.bpc.2022.106830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 05/03/2022] [Accepted: 05/17/2022] [Indexed: 11/20/2022]
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Liu Y, Zhang Y, Sun Y, Ding F. A buried glutamate in the cross-β core renders β-endorphin fibrils reversible. NANOSCALE 2021; 13:19593-19603. [PMID: 34812835 PMCID: PMC8674924 DOI: 10.1039/d1nr05679d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Functional amyloids are abundant in living organisms from prokaryotes to eukaryotes playing diverse biological roles. In contrast to the irreversible aggregation of most known pathological amyloids, we postulate that naturally-occurring functional amyloids are reversible under evolutionary pressure to be able to modulate the fibrillization process, reuse the composite peptides, or perform their biological functions. β-Endorphin, an endogenous opioid peptide hormone, forms such kinds of reversible amyloid fibrils in secretory granules for efficient storage and returns to the functional state of monomers upon release into the blood. The environmental change between low pH in secretory granules and neutral pH in extracellular spaces is believed to drive the reversible fibrillization of β-endorphin. Here, we investigate the critical role of a buried glutamate, Glu8, in the pH-responsive disassembly of β-endorphin fibrils using all-atom molecular dynamics simulations along with structure-based pKa prediction. The fibril was stable at pH 5.5 or lower with all the buried Glu8 residues protonated and neutrally charged. After switching to neutral pH, the Glu8 residues of peptides at the outer layers of the ordered fibrils became deprotonated due to partial solvent exposure, causing sheet-to-coil conformational changes and subsequent exposure of adjacent Glu8 residues in the inner chains. Via iterative deprotonation of Glu8 and induced structural disruption, all Glu8 residues would be progressively deprotonated. Electrostatic repulsion between deprotonated Glu8 residues along with their high solvation tendency disrupted the hydrogen bonding between the β1 strands and increased the solvent exposure of those otherwise buried residues in the cross-β core. Overall, our computational study reveals that the strategic positioning of ionizable residues into the cross-β core is a potential approach for designing reversible amyloid fibrils as pH-responsive smart bio-nanomaterials.
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Affiliation(s)
- Yuying Liu
- School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
| | - Yu Zhang
- School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
| | - Yunxiang Sun
- School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
- Department of Physics and Astronomy, Clemson University, Clemson, South Carolina 29634, USA.
| | - Feng Ding
- Department of Physics and Astronomy, Clemson University, Clemson, South Carolina 29634, USA.
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Dharmadana D, Adamcik J, Ryan TM, Appiah Danso S, Chong CJH, Conn CE, Reynolds NP, Mezzenga R, Valéry C. Human neuropeptide substance P self-assembles into semi-flexible nanotubes that can be manipulated for nanotechnology. NANOSCALE 2020; 12:22680-22687. [PMID: 33165459 DOI: 10.1039/d0nr05622g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Substance P neuropeptide is here reported to self-assemble into well-defined semi-flexible nanotubes. Using a blend of synchrotron small angle X-ray scattering, atomic force microscopy and other biophysical techniques, the natural peptide is shown to self-assemble into monodisperse 6 nm wide nanotubes, which can closely associate into nano-arrays with nematic properties. Using simple protocols, the nanotubes could be precipitated or mineralised while conserving their dimensions and core-shell morphology. Our discovery expands the small number of available monodisperse peptide nanotube systems for nanotechnology, beyond direct relevance to biologically functional peptide nanostructures since the substance P nanotubes are fundamentally different from typical amyloid fibrils.
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Affiliation(s)
- Durga Dharmadana
- School of Health and Biomedical Sciences, Translational Immunology and Nanotechnology (TIN) Program, RMIT University, Bundoora VIC3083, Australia.
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8
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Zaguri D, Shaham-Niv S, Chakraborty P, Arnon Z, Makam P, Bera S, Rencus-Lazar S, Stoddart PR, Gazit E, Reynolds NP. Nanomechanical Properties and Phase Behavior of Phenylalanine Amyloid Ribbon Assemblies and Amorphous Self-Healing Hydrogels. ACS APPLIED MATERIALS & INTERFACES 2020; 12:21992-22001. [PMID: 32307977 DOI: 10.1021/acsami.0c01574] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Phenylalanine was the minimalistic and first of numerous nonproteinaceous building blocks to be demonstrated to form amyloid-like fibrils. This unexpected organization of such a simple building block into canonical architecture, which was previously observed only with proteins and peptides, has numerous implications for medicine and supramolecular chemistry. However, the morphology of phenylalanine fibrils and their mechanical properties was never characterized in solutions. Here, using electron and atomic force microscopy, we analyze the morphological and mechanical properties of phenylalanine fibrils in both air and fluids. The fibrils demonstrate an exceptionally high Young's modulus (up to 30 GPa) and are found to be composed of intertwined protofilaments in a helical or twisted ribbon morphology. In addition, X-ray scattering experiments provide convincing evidence of an amyloidal cross-β-like secondary structure within the nanoassemblies. Furthermore, increasing the phenylalanine concentration results in the formation of highly homogenous, noncrystalline, self-healing hydrogels that display storage and loss moduli significantly higher than similar noncovalently cross-linked biomolecular nanofibrillar scaffolds. These remarkably stiff nanofibrillar hydrogels can be harnessed for various technological and biomedical applications, such as self-healing, printable, structural, load-bearing 3D scaffolds. The properties of this simple but quite remarkable hydrogel open a possibility to utilize it in the biomaterial industry.
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Affiliation(s)
- Dor Zaguri
- School of Molecular Cell Biology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Shira Shaham-Niv
- BLAVATNIK CENTER for Drug Discovery, Metabolite Medicine Division, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Priyadarshi Chakraborty
- School of Molecular Cell Biology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Zohar Arnon
- School of Molecular Cell Biology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Pandeeswar Makam
- School of Molecular Cell Biology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Santu Bera
- School of Molecular Cell Biology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Sigal Rencus-Lazar
- School of Molecular Cell Biology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Paul R Stoddart
- ARC Training Centre in Biodevices, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Melbourne, Victoria 3122, Australia
| | - Ehud Gazit
- School of Molecular Cell Biology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
- BLAVATNIK CENTER for Drug Discovery, Metabolite Medicine Division, Tel Aviv University, Tel Aviv 6997801, Israel
- Department of Materials Science and Engineering, Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Nicholas P Reynolds
- ARC Training Centre in Biodevices, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Melbourne, Victoria 3122, Australia
- Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria 3083, Australia
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