Side-chain conformational changes upon Protein-Protein Association.

ABSTRACT: Conformational changes upon protein-protein association are the key element of the binding mechanism. The study presents a systematic large-scale analysis of such conformational changes in the side chains. The results indicate that short and long side chains have different propensities for the conformational changes. Long side chains with three or more dihedral angles are often subject to large conformational transition. Shorter residues with one or two dihedral angles typically undergo local conformational changes not leading to a conformational transition. A relationship between the local readjustments and the equilibrium fluctuations of a side chain around its unbound conformation is suggested. Most of the side chains undergo larger changes in the dihedral angle most distant from the ba

SUBMITTER: Ruvinsky AM 

PROVIDER: S-EPMC3073032 | biostudies-literature | 2011 Apr

REPOSITORIES: biostudies-literature