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ColBuilder: flexible structure generation of crosslinked collagen fibrils

Motivation 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.Results ColBuilder has been developed to automate the generation...

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Bibliographic Details
Main Authors: Monego, Debora (Author) , Brosz, Matthias (Author) , Buck, Johanna (Author) , Viliuga, Vsevolod (Author) , Greicius, Paulius (Author) , Jung, Jaewoon (Author) , Stuehn, Torsten (Author) , Schmies, Matthias (Author) , Sugita, Yuji (Author) , Gräter, Frauke (Author)
Format: Article (Journal)
Language:English
Published: June 2025
In: Bioinformatics
Year: 2025, Volume: 41, Issue: 6, Pages: 1-9
ISSN:1367-4811
DOI:10.1093/bioinformatics/btaf278
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1093/bioinformatics/btaf278
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Author Notes:Debora Monego, Matthias Brosz, Johanna Buck, Vsevolod Viliuga, Paulius Greicius, Jaewoon Jung, Torsten Stuehn, Matthias Schmies, Yuji Sugita, Frauke Grater
Description
Summary:Motivation 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.Results 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 335nm-long fibrils validate the generated structures, showing excellent agreement with experimental measurements of D-band periodicity and force-extension behavior.Availability and implementation ColBuilder is available both as an open-source command-line application and through a web interface at https://colbuilder.mpip-mainz.mpg.de.
Item Description:Veröffentlicht: 05 May 2025
Gesehen am 24.10.2025
Physical Description:Online Resource
ISSN:1367-4811
DOI:10.1093/bioinformatics/btaf278

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