Access

Letter

Nature Structural & Molecular Biology 9, 940–944 (1 December 2002) | doi:10.1038/nsb870

Crystal structure of an activated Akt/Protein Kinase B ternary complex with GSK3-peptide and AMP-PNP

Jing Yang , Peter Cron , Valerie M. Good , Vivienne Thompson , Brian A. Hemmings & David Barford

The protein kinase Akt/PKB is stimulated by the phosphorylation of two regulatory residues, Thr 309 of the activation segment and Ser 474 of the hydrophobic motif (HM), that are structurally and functionally conserved within the AGC kinase family. To understand the mechanism of PKB regulation, we determined the crystal structures of activated kinase domains of PKB in complex with a GSK3β-peptide substrate and an ATP analog.