Title
M-ORBIS: mapping of molecular binding sites and surfaces.
Abstract
M-ORBIS is a Molecular Cartography approach that performs integrative high-throughput analysis of structural data to localize all types of binding sites and associated partners by homology and to characterize their properties and behaviors in a systemic way. The robustness of our binding site inferences was compared to four curated datasets corresponding to protein heterodimers and homodimers and protein-DNA/RNA assemblies. The Molecular Cartographies of structurally well-detailed proteins shows that 44% of their surfaces interact with non-solvent partners. Residue contact frequencies with water suggest that similar to 86% of their surfaces are transiently solvated, whereas only 15% are specifically solvated. Our analysis also reveals the existence of two major binding site families: specific binding sites which can only bind one type of molecule (protein, DNA, RNA, etc.) and polyvalent binding sites that can bind several distinct types of molecule. Specific homodimer binding sites are for instance nearly twice as hydrophobic than previously described and more closely resemble the protein core, while polyvalent binding sites able to form homo and heterodimers more closely resemble the surfaces involved in crystal packing. Similarly, the regions able to bind DNA and to alternatively form homodimers, are more hydrophobic and less polar than previously described DNA binding sites.
Year
DOI
Venue
2011
10.1093/nar/gkq736
NUCLEIC ACIDS RESEARCH
Keywords
Field
DocType
water,proteins,computational biology,binding sites,protein binding,protein conformation,binding site
Binding site,DNA binding site,Biology,Binding protein,Cooperative binding,HMG-box,Binding domain,Molecular biology,A-site,Protein structure
Journal
Volume
Issue
ISSN
39
1
0305-1048
Citations 
PageRank 
References 
3
0.41
9
Authors
3
Name
Order
Citations
PageRank
Laurent-Philippe Albou130.41
O Poch251.23
Dino Moras330.41