Cited by 485Polymer Surface Interaction StudiesBiochemical and Structural CharacterizationMarine Biology and Environmental Chemistry

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Cross-Linking in Adhesive Quinoproteins: Studies with Model Decapeptides

Burzio, Luis A., Waite, J. Herbert·2000·Biochemistry

Abstract

Mytilus edulis foot protein-1 (mefp1) is a major component of the byssus, an adhesive holdfast in mussels. The recent report of 5, 5'-di(dihydroxyphenyl-L-alanine) (diDOPA) cross-links in byssus [McDowell et al. (1999) J. Biol. Chem. 274, 20293] has raised questions about the relationship of these to mefp1. About 80% of the primary structure of mefp1 consists of a tandemly repeated consensus sequence Ala(1)-Lys(2)-Pro(3)-Ser(4)-Tyr(5)-Pro(6)-Pro(7)-Thr(8)-Tyr(9)-Lys(10 ) with varying degrees of posttranslational hydroxylation to hydroxyprolines in positions 3, 6, and 7 and to DOPA in positions 5 and 9. Six natural or synthetic variants of this decapeptide were subjected to oxidation by tyrosinase or periodate. DOPA is the only residue to suffer losses in all oxidized peptides. Moreover, using MALDI TOF mass spectrometry, oxidized decapeptides all showed evidence of multimer formation and a mass loss of 6 Da per coupled pair of peptides. Multimer formation was inhibited by addition of DOPA-like o-diphenols, but addition of simple amines such as free Lys had no effect. The results are consistent with aryloxy coupling to diDOPA followed by reoxidation to diDOPA quinone. There are subtle but noteworthy variations, however, in multimer formation among the peptide congeners. Decapeptides with Pro(3) modified to trans-4-hydroxyproline do not form multimers beyond dimers; they also exhibit significant Lys losses following oxidation of DOPA. Moreover, in Ala-Lys-Hyp-Ser-Tyr-DiHyp-Hyp-…

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Research works printed but not linked: 25

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Metadata

Authors
Burzio, L. A., & Waite, J. H.
Affiliations
University of California, Santa Barbara (US)
Venue
Biochemistry
Published
2000-08-17
Volume
39
Issue
36
Pages
11147-11153
ISSN
  • 0006-2960 (ISSN-L)
  • 1520-4995
OpenAlex
W2011121154
Cited by
485
References
9
Citations by year
2026: 4 · 2025: 9 · 2024: 18 · 2023: 19 · 2022: 23 · 2021: 37 · 2020: 25 · 2019: 29 · 2018: 28 · 2017: 34 · 2016: 37 · 2015: 24 · 2014: 28 · 2013: 19 · 2012: 24
FWCI
6.45
Type
journal article
Language
en
Open access
closed
Locations
  • Biochemistry (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5r01de010042-11)
  • National Institute of Dental and Craniofacial Research (DE10042)
Topics
  • Physical Sciences › Materials Science › Surfaces, Coatings and Films › Polymer Surface Interaction Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Biochemical and Structural Characterization
  • Physical Sciences › Engineering › Ocean Engineering › Marine Biology and Environmental Chemistry
Keywords
byssus, DOPA oxidation, periodate oxidation, hydroxyproline, trans-4-hydroxyproline, o-diphenols
MeSH terms
Adhesiveness, Adhesives, Animals, Cross-Linking Reagents, Dihydroxyphenylalanine, Glycine, Hydrolysis, Lysine, Models, Molecular, Oligopeptides, Oxidation-Reduction, Proteins, Quinones, Spectrophotometry, Ultraviolet, Tyrosine, Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization, Bivalvia

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