2biy

From Proteopedia

Revision as of 14:34, 30 October 2007

STRUCTURE OF PDK1-S241A MUTANT KINASE DOMAIN

Overview

3-Phosphoinositide-dependent protein kinase-1 (PDK1) phosphorylates the, T-loop of several AGC (cAMP-dependent, cGMP-dependent, protein kinase C), family protein kinases, resulting in their activation. Previous structural, studies have revealed that the alpha C-helix, located in the small lobe of, the kinase domain of PDK1, is a key regulatory element, as it links a, substrate interacting site termed the hydrophobic motif (HM) pocket with, the phosphorylated Ser-241 in the T-loop. In this study we have, demonstrated by mutational analysis that interactions between the, phosphorylated Ser-241 and the alpha C-helix are not required for PDK1, activity or substrate binding through the HM-pocket but are necessary for, PDK1 to be activated or stabilized by a peptide that binds to this site., ... [(full description)]

About this Structure

2BIY is a [Single protein] structure of sequence from [Homo sapiens] with SO4, ATP and GOL as [ligands]. Active as [Transferred entry: 2.7.11.1], with EC number [2.7.1.37]. Structure known Active Site: BC6. Full crystallographic information is available from [OCA].

Reference

Role of T-loop phosphorylation in PDK1 activation, stability, and substrate binding., Komander D, Kular G, Deak M, Alessi DR, van Aalten DM, J Biol Chem. 2005 May 13;280(19):18797-802. Epub 2005 Mar 1. PMID:15741170

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