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Amit M, Yuran S, Gazit E, Reches M, Ashkenasy N. Tailor-Made Functional Peptide Self-Assembling Nanostructures. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1707083. [PMID: 29989255 DOI: 10.1002/adma.201707083] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 04/05/2018] [Indexed: 05/08/2023]
Abstract
Noncovalent interactions are the main driving force in the folding of proteins into a 3D functional structure. Motivated by the wish to reveal the mechanisms of the associated self-assembly processes, scientists are focusing on studying self-assembly processes of short protein segments (peptides). While this research has led to major advances in the understanding of biological and pathological process, only in recent years has the applicative potential of the resulting self-assembled peptide assemblies started to be explored. Here, major advances in the development of biomimetic supramolecular peptide assemblies as coatings, gels, and as electroactive materials, are highlighted. The guiding lines for the design of helical peptides, β strand peptides, as well as surface binding monolayer-forming peptides that can be utilized for a specific function are highlighted. Examples of their applications in diverse immerging applications in, e.g., ecology, biomedicine, and electronics, are described. Taking into account that, in addition to extraordinary design flexibility, these materials are naturally biocompatible and ecologically friendly, and their production is cost effective, the emergence of devices incorporating these biomimetic materials in the market is envisioned in the near future.
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Affiliation(s)
- Moran Amit
- Department of Materials Engineering, Ben Gurion University of the Negev, Beer-Sheva, 84105, Israel
- Department of Electrical and Computer Engineering, UC San Diego, La Jolla, CA, 92093-0407, USA
| | - Sivan Yuran
- Institute of Chemistry and The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel
| | - Ehud Gazit
- Department of Molecular Microbiology and Biotechnology, Department of Materials Science and Engineering, Tel Aviv University, Tel Aviv, 69978, Israel
| | - Meital Reches
- Institute of Chemistry and The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel
| | - Nurit Ashkenasy
- Department of Materials Engineering, Ben Gurion University of the Negev, Beer-Sheva, 84105, Israel
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Patterson LK, Mazière JC, Bartels DM, Hug GL, Santus R, Morlière P. Evidence for a slow and oxygen-insensitive intra-molecular long range electron transfer from tyrosine residues to the semi-oxidized tryptophan 214 in human serum albumin: its inhibition by bound copper (II). Amino Acids 2010; 42:1269-75. [DOI: 10.1007/s00726-010-0819-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2010] [Accepted: 11/22/2010] [Indexed: 11/29/2022]
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Improta R, Antonello S, Formaggio F, Maran F, Rega N, Barone V. Understanding Electron Transfer across Negatively-Charged Aib Oligopeptides. J Phys Chem B 2004; 109:1023-33. [PMID: 16866475 DOI: 10.1021/jp045797l] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The physicochemical effects modulating the conformational behavior and the rate of intramolecular dissociative electron transfer in phthalimide-Aibn-peroxide peptides (n = 0-3) have been studied by an integrated density functional/continuum solvent model. We found that three different orientations of the phthalimide ring are possible, labeled Phihel, PhiC7, and PhipII. In the condensed phase, they are very close in energy when the system is neutral and short. When the peptide chain length increases and the system is negatively charged, Phihel becomes instead the most stable conformer. Our calculations confirm that the 3(10)-helix is the most stable secondary structure for the peptide bridge. However, upon charge injection in the phthalimide end of the phthalimide-Aib3-peroxide, the peptide bridge can adopt an alpha-helix conformation as well. The study of the dependence of the frontier orbitals on the length and on the conformation of the peptide bridge (in agreement with experimental indications) suggests that for n = 3 the process could be influenced by a 3(10) --> alpha-helix conformational transition of the peptide chain.
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Affiliation(s)
- Roberto Improta
- Dipartimento di Chimica, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia, 80126 Napoli, Italy
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Stuart-Audette M, Blouquit Y, Faraggi M, Sicard-Roselli C, Houée-Levin C, Jollès P. Re-evaluation of intramolecular long-range electron transfer between tyrosine and tryptophan in lysozymes. Evidence for the participation of other residues. EUROPEAN JOURNAL OF BIOCHEMISTRY 2003; 270:3565-71. [PMID: 12919320 DOI: 10.1046/j.1432-1033.2003.03741.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
One-electron oxidation of six different c-type lysozymes from hen egg white, turkey egg white, human milk, horse milk, camel stomach and tortoise was studied by gamma- and pulse-radiolysis. In the first step, one tryptophan side chain is oxidized to indolyl free radical, which is produced quantitatively. As shown already, the indolyl radical subsequently oxidizes a tyrosine side chain to the phenoxy radical in an intramolecular reaction. However this reaction is not total and its stoichiometry depends on the protein. Rate constants also vary between proteins, from 120 x s(-1) to 1000 x s(-1) at pH 7.0 and room temperature [extremes are hen and turkey egg white (120 x s(-1)) and human milk (1000 x s(-1))]. In hen and turkey egg white lysozymes we show that another reactive site is the Asn103-Gly104 peptidic bond, which gets broken radiolytically. Tryptic digestion followed by HPLC separation and identification of the peptides was performed for nonirradiated and irradiated hen lysozyme. Fluorescence spectra of the peptides indicate that Trp108 and/or 111 remain oxidized and that Tyr20 and 53 give bityrosine. Tyr23 appears not to be involved in the process. Thus new features of long-range intramolecular electron transfer in proteins appear: it is only partial and other groups are involved which are silent in pulse radiolysis.
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Radiation chemistry of proteins. ACTA ACUST UNITED AC 2001. [DOI: 10.1016/s0167-6881(01)80022-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
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6
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Audette M, Chen X, Houée-Levin C, Potier M, Le Maire M. Protein gamma-radiolysis in frozen solutions is a macromolecular surface phenomenon: fragmentation of lysozyme, citrate synthase and alpha-lactalbumin in native or denatured states. Int J Radiat Biol 2000; 76:673-81. [PMID: 10866290 DOI: 10.1080/095530000138349] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
PURPOSE To test whether radiolysis-induced fragmentation in frozen aqueous protein solution is dependent on solvent access to the surface of the protein or to the molecular mass of the polypeptide chain. MATERIALS AND METHODS 60Co gamma-irradiation of three proteins at -78 degrees C: lysozyme, citrate synthase and alpha-lactalbumin in their native state, with or without bound substrate, or denatured (random coil in urea/acid-denatured state). RESULTS By SDS-polyacrylamide gel electrophoresis/analysis of the protein-fragmentation process, it was found that for a given protein D37 values (dose to decrease the measured amount of protein, with an unaltered polypeptidic chain, to 37% of the initial amount) varied according to the state of the protein. D37 for denatured proteins was always much smaller than for native states, indicating a greater susceptibility to fragmentation. In urea, contrary to the native state, no well-defined fragments were observed. Radiolysis decay constants (K= 1/D37) increased with solvent-accessible surface area of these proteins estimated from their radii of gyration in the various states. This is shown also in previous data on native or SDS-denatured proteins. Denatured proteins which have a large surface area exposed to the solvent compared with native ones are more fragmented at equal doses. CONCLUSIONS It is concluded that D37 is directly related to the exposed surface area and not to the molecular mass of the polypeptide chain.
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Affiliation(s)
- M Audette
- LPCR, UMR 8610 CNRS-Université Paris-Sud, Orsay, France
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7
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Lang K, Kuki A. Long-Range Electron Transfer in Rigid 3 10-Helical Oligopeptides Containing Redox Cyclic a-Amino Acids. Photochem Photobiol 1999. [DOI: 10.1111/j.1751-1097.1999.tb08254.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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8
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Hungerford G, Donald F, Birch DJ, Moore BD. Influence of secondary structure on the decay kinetics of fluorescent donor-acceptor labelled peptides. Biosens Bioelectron 1997; 12:1183-90. [PMID: 9474767 DOI: 10.1016/s0956-5663(97)00088-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Time-resolved fluorescence decays from a series of methoxynaphthalene labelled peptides in ethyl acetate were monitored over the temperature range -40 to 60 degrees C. The quenching effect of a piperidone acceptor group placed at various positions along the peptide chain relative to the fluorescent methoxynaphthalene donor was studied. In this moderately polar solvent the mechanism of quenching is most likely electron transfer, although a Dexter exchange mechanism cannot be ruled out. Both donor and acceptor moieties were covalently attached to the side-chains of glutamic acid residues. These were either placed adjacently, in the case of a dipeptide, or separated by three and six amino acids within a 12 and 15 amino-acid oligopeptide, respectively. The presence of the piperidone group resulted in a reduction in the fluorescence lifetime and a change from a simple monoexponential decay to more complex behaviour. This was found to vary reversibly with temperature and not to be caused by impurities. Modelling of the fluorescence decays was carried out using either the sum of two exponentials or a distribution of decays. For the dipeptide the best fit was a distribution while in the case of the 12-mer two clearly distinguishable populations could be observed. The results for the 15-mer were equivocal. Importantly, regardless of the fitting method used the quenching rate was found to be fastest for the 12-mer. The slower quenching rates observed for the dipeptide compared to the oligopeptides provide strong evidence that secondary structure promotes better electronic coupling between the donor and acceptor. The biexponential fluorescence behaviour for the 12 amino-acid oligopeptide is ascribed to two slowly (> 10 ns) interconverting conformational states. Comparison with circular dichroism and infrared obtained in acetonitrile indicates these two conformers are likely to be an alpha-helix and a 3(10)-helix with electronic coupling strongest in the latter case.
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Affiliation(s)
- G Hungerford
- Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, Scotland, UK
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10
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Possible role of surface electrochemical electron-transfer and semiconductor charge transport processes in ion channel function. ACTA ACUST UNITED AC 1996. [DOI: 10.1016/0302-4598(95)01894-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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11
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Batchelder TL, Fox RJ, Meier MS, Fox MA. Intramolecular Excited State Electronic Coupling Along an alpha-Helical Peptide. J Org Chem 1996; 61:4206-4209. [PMID: 11667316 DOI: 10.1021/jo960149m] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Several families of peptides composed of alternating L-alanine (Ala) and alpha-aminoisobutyric acid (Aib) residues with an appended N,N-dimethylanilino and/or 2-naphthalenyl group exist in MeOH and CDCl(3) as alpha-helices. Steady state and time-resolved fluorescence measurements show that the distance and dihedral angle between the appended donor and acceptor and the alignment of the vectors for intramolecular charge transfer interaction (from donor to acceptor) with or against that of the helical dipole moment significantly influence the efficiency of photoinduced electronic coupling and, hence, of intramolecular fluorescence quenching.
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Affiliation(s)
- Traci L. Batchelder
- Department of Chemistry and Biochemistry, The University of Texas at Austin, Austin, Texas 78712
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12
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Dahiyat BI, Meade TJ, Mayo SL. Site-specific modification of α-helical peptides with electron donors and acceptors. Inorganica Chim Acta 1996. [DOI: 10.1016/0020-1693(95)04909-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Matko J, Jenei A, Wei T, Edidin M. Luminescence quenching by long range electron transfer: a probe of protein clustering and conformation at the cell surface. CYTOMETRY 1995; 19:191-200. [PMID: 7736865 DOI: 10.1002/cyto.990190302] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Quenching of luminescence from fluorescent and phosphorescent probes by nitroxide spin labels with a long range electron transfer (LRET) mechanism (44,45) has been tested as a tool to monitor association/clustering and conformational changes of cell surface proteins. The membrane proteins were labeled with monoclonal antibodies or Fab fragments conjugated with luminescent probes or water-soluble nitroxide spin labels. The method was tested as a probe of 3 different aspects of protein-protein association involving class I MHC molecules: (1) interaction between the heavy and light chains of the MHC molecules, (2) clustering, self-association of MHC molecules, (3) proximity of MHC molecules to transferrin receptors of fibroblasts or surface immunoglobulin molecules of B lymphoblasts. The extent of quenching upon increasing the fractional density of the quencher was sensitive for protein association in accordance with earlier immunoprecipitation and flow cytometric Förster-type energy transfer (FCET) data obtained on the same cells. These data suggest that the LRET quenching can be used as intra- or intermolecular ruler in a 0.5-2.5 nm distance range. This approach is simpler (measurements only on donor side) and faster than many other experimental techniques in screening physical association or conformational changes of membrane proteins by means of spectrofluorimetry, flow cytometry, or microscope based imaging.
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Affiliation(s)
- J Matko
- Department of Biology, Johns Hopkins University, Baltimore, Maryland, USA
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Tamiaki H, Nomura K, Maruyama K. Energy and Electron Transfer in Synthetic Oligoproline-BridgedPorphyrin Donor–Acceptor Molecules. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1994. [DOI: 10.1246/bcsj.67.1863] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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15
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Adamson JG, Zhou NE, Hodges RS. Structure, function and application of the coiled-coil protein folding motif. Curr Opin Biotechnol 1993; 4:428-37. [PMID: 7763973 DOI: 10.1016/0958-1669(93)90008-k] [Citation(s) in RCA: 77] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Recent X-ray analyses and synthetic model studies of the coiled-coil motif have clarified roles for hydrophobic core residues and ionic interactions in determining stability, selectivity, stoichiometry and orientation of alpha-helices in this structure. Although much remains to be learnt, current knowledge now enables this motif to be used in novel constructs and points the way to a more explicit understanding of native coiled-coil formation and protein folding in general.
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Affiliation(s)
- J G Adamson
- Protein Engineering Network of Centres of Excellence, University of Alberta, Edmonton, Canada
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