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The collαgen III fibril has a "flexi-rod" structure of flexible sequences interspersed with rigid bioactive domains including two with hemostatic roles.

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posted on 2017-08-02, 10:33 authored by J. Des Parkin, James D. San Antonio, Anton V. Persikov, Hayat Dagher, Raymond Dalgleish, Shane T. Jensen, Xavier Jeunemaitre, Judy Savige
Collagen III is critical to the integrity of blood vessels and distensible organs, and in hemostasis. Examination of the human collagen III interactome reveals a nearly identical structural arrangement and charge distribution pattern as for collagen I, with cell interaction domains, fibrillogenesis and enzyme cleavage domains, several major ligand-binding regions, and intermolecular crosslink sites at the same sites. These similarities allow heterotypic fibril formation with, and substitution by, collagen I in embryonic development and wound healing. The collagen III fibril assumes a "flexi-rod" structure with flexible zones interspersed with rod-like domains, which is consistent with the molecule's prominence in young, pliable tissues and distensible organs. Collagen III has two major hemostasis domains, with binding motifs for von Willebrand factor, α2β1 integrin, platelet binding octapeptide and glycoprotein VI, consistent with the bleeding tendency observed with COL3A1 disease-causing sequence variants.

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Citation

PLoS One, 2017, 12 (7), pp. e0175582

Author affiliation

/Organisation/COLLEGE OF MEDICINE, BIOLOGICAL SCIENCES AND PSYCHOLOGY/MBSP Non-Medical Departments/Department of Genetics

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  • VoR (Version of Record)

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PLoS One

Publisher

Public Library of Science

eissn

1932-6203

Acceptance date

2017-03-20

Copyright date

2017

Available date

2017-08-02

Publisher version

http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0175582

Language

en

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