PreprintCited by 4Collagen: Extraction and CharacterizationProtein Structure and DynamicsConnective tissue disorders research

The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.

ColBuilder: Flexible structure generation of crosslinked collagen fibrils

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Preprint — published as 10.1093/bioinformatics/btaf278

Abstract

Collagen fibrils are fundamental building blocks of connective tissues, yet generating accurate molecular models of their structure remains challenging due to their hierarchical organization and complex crosslinking patterns. ColBuilder has been developed to automate the generation of atomistic models of crosslinked collagen fibrils and facilitate the setup of molecular simulations. The tool integrates homology modeling, higher-order structure generation and optimization to build complete fibril structures with precise control over sequence composition, crosslinking patterns, and dimensions. Users can explore different collagen sequences, manipulate crosslink chemistry through mixed ratios and densities, and generate fibrils of varying diameter and length. All-atom molecular dynamics simulations of 335 nm-long fibrils validate the generated structures, showing excellent agreement with experimental measurements of D-band periodicity and force-extension behavior. ColBuilder is available both as an open-source command-line application and through a web interface at colbuilder.mpip-mainz.mpg.de.

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Metadata

Authors
Monego, D., Brosz, M., Buck, J., Viliuga, V., Jung, J., Stuehn, T., Schmies, M., Sugita, Y., & Gräter, F.
Affiliations
  • Max Planck Institute for Polymer Research (DE)
  • Heidelberg University (DE)
  • Stockholm University (SE)
  • RIKEN Center for Computational Science (JP)
Corresponding author
  • Monego, Debora
  • Gräter, Frauke
Venue
Bioinformatics
Publisher
openRxiv
Published
2024-12-12
Volume
41
Issue
6
ISSN
1367-4803 (ISSN-L)
OpenAlex
W4410079575
Cited by
4
References
1
Citations by year
2026: 2 · 2025: 2
FWCI
0.83
Type
journal article
Language
en
Open access
Locations
  • Bioinformatics (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • MPG.PuRe (Max Planck Society) (submittedVersion, cc-by)
Funders
  • Deutsche Forschungsgemeinschaft (EXC-2082/ 1390761711, 390761711, 2082/1, 2082/1390761711, EXC-2082/1)
  • Klaus Tschira Stiftung
  • RIKEN (hp230212)
  • H2020 European Research Council (101002812)
Topics
  • Physical Sciences › Materials Science › Biomaterials › Collagen: Extraction and Characterization
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Connective tissue disorders research
Keywords
collagen fibrils, crosslinking, homology modeling, higher-order structure, force-extension behavior, connective tissue
MeSH terms
Collagen, Cross-Linking Reagents, Protein Conformation, Software, Molecular Dynamics Simulation

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