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© Research
Publication : Structure (London, England : 1993)

Quantitative Structural Interpretation of Protein Crosslinks

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Structure (London, England : 1993) - 15 Nov 2019

Filella-Merce I, Bardiaux B, Nilges M, Bouvier G

Link to Pubmed [PMID] – 31753619

Structure 2019 Nov;

Chemical crosslinking, combined with mass spectrometry analysis, is a key source of information for characterizing the structure of large protein assemblies, in the context of molecular modeling. In most approaches, the interpretation is limited to simple spatial restraints, neglecting physico-chemical interactions between the crosslinker and the protein and their flexibility. Here we present a method, named NRGXL (new realistic grid for crosslinks), which models the flexibility of the crosslinker and the linked side-chains, by explicitly sampling many conformations. Also, the method can efficiently deal with overall protein dynamics. This method creates a physical model of the crosslinker and associated energy. A classifier based on it outperforms others, based on Euclidean distance or solvent-accessible distance and its efficiency makes it usable for validating 3D models from crosslinking data. NRGXL is freely available as a web server at: https://nrgxl.pasteur.fr.

https://www.ncbi.nlm.nih.gov/pubmed/31753619