eprintid: 10123859
rev_number: 17
eprint_status: archive
userid: 608
dir: disk0/10/12/38/59
datestamp: 2021-03-12 13:28:33
lastmod: 2021-09-25 22:46:23
status_changed: 2021-03-12 13:28:33
type: article
metadata_visibility: show
creators_name: Hafner, AE
creators_name: Gyori, NG
creators_name: Bench, CA
creators_name: Davis, LK
creators_name: Saric, A
title: Modeling Fibrillogenesis of Collagen-Mimetic Molecules
ispublished: pub
divisions: UCL
divisions: B02
divisions: C08
divisions: D09
divisions: B04
divisions: C06
divisions: F60
note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
abstract: One of the most robust examples of self-assembly in living organisms is the formation of collagen architectures. Collagen type I molecules are a crucial component of the extracellular matrix, where they self-assemble into fibrils of well-defined axial striped patterns. This striped fibrillar pattern is preserved across the animal kingdom and is important for the determination of cell phenotype, cell adhesion, and tissue regulation and signaling. The understanding of the physical processes that determine such a robust morphology of self-assembled collagen fibrils is currently almost completely missing. Here, we develop a minimal coarse-grained computational model to identify the physical principles of the assembly of collagen-mimetic molecules. We find that screened electrostatic interactions can drive the formation of collagen-like filaments of well-defined striped morphologies. The fibril axial pattern is determined solely by the distribution of charges on the molecule and is robust to the changes in protein concentration, monomer rigidity, and environmental conditions. We show that the striped fibrillar pattern cannot be easily predicted from the interactions between two monomers but is an emergent result of multibody interactions. Our results can help address collagen remodeling in diseases and aging and guide the design of collagen scaffolds for biotechnological applications.
date: 2020-11-03
date_type: published
publisher: CELL PRESS
official_url: http://dx.doi.org/10.1016/j.bpj.2020.09.013
oa_status: green
full_text_type: other
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 1821760
doi: 10.1016/j.bpj.2020.09.013
lyricists_name: Davis, Luke
lyricists_name: Gyori, Noemi
lyricists_name: Saric, Andela
lyricists_id: LKDAV83
lyricists_id: NGGYO88
lyricists_id: ASARI61
actors_name: Saric, Andela
actors_id: ASARI61
actors_role: owner
full_text_status: public
publication: Biophysical Journal
volume: 119
number: 9
pagerange: 1791-1799
pages: 9
citation:        Hafner, AE;    Gyori, NG;    Bench, CA;    Davis, LK;    Saric, A;      (2020)    Modeling Fibrillogenesis of Collagen-Mimetic Molecules.                   Biophysical Journal , 119  (9)   pp. 1791-1799.    10.1016/j.bpj.2020.09.013 <https://doi.org/10.1016/j.bpj.2020.09.013>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10123859/1/Hafner_paperSI.pdf