Reciprocally coupled residues crucial for protein kinase Pak2 activity calculated by statistical coupling analysis.

ABSTRACT: Regulation of Pak2 activity involves at least two mechanisms: (i) phosphorylation of the conserved Thr(402) in the activation loop and (ii) interaction of the autoinhibitory domain (AID) with the catalytic domain. We collected 482 human protein kinase sequences from the kinome database and globally mapped the evolutionary interactions of the residues in the catalytic domain with Thr(402) by sequence-based statistical coupling analysis (SCA). Perturbation of Thr(402) (34.6%) suggests a communication pathway between Thr(402) in the activation loop, and Phe(387) (DeltaDeltaE(387F,402T) = 2.80) in the magnesium positioning loop, Trp(427) (DeltaDeltaE(427W,402T) = 3.12) in the F-helix, and Val(404) (DeltaDeltaE(404V,402T) = 4.43) and Gly(405) (DeltaDeltaE(405G,402T) = 2.95) in the peptide posit

SUBMITTER: Hsu YH 

PROVIDER: S-EPMC2830475 | biostudies-literature | 2010 Mar

REPOSITORIES: biostudies-literature