This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.
Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.
2pl0
From Proteopedia
|
LCK bound to imatinib
Contents |
Overview
We report a clustering of public human protein kinase structures based on the conformations of two structural elements, the activation segment and the C-helix, revealing three discrete clusters. One cluster includes kinases in catalytically active conformations. Each of the other clusters contains a distinct inactive conformation. Typically, kinases adopt at most one of the inactive conformations in available X-ray structures, implying that one of the conformations is preferred for many kinases. The classification is consistent with selectivity profiles of several well-characterized kinase inhibitors. We show further that inhibitor selectivity profiles guide kinase classification. For example, selective inhibition of lck among src-family kinases by imatinib (Gleevec) suggests that the relative stabilities of inactive conformations of lck are different from other src-family kinases. We report the X-ray structure of the lck/imatinib complex, confirming that the conformation adopted by lck is distinct from other structurally-characterized src-family kinases and instead resembles kinases abl1 and kit in complex with imatinib. Our classification creates new paths for designing small-molecule inhibitors. Proteins 2008. (c) 2007 Wiley-Liss, Inc.
Disease
Known disease associated with this structure: SCID due to LCK deficiency OMIM:[153390]
About this Structure
2PL0 is a Single protein structure of sequence from Homo sapiens with as ligand. Active as Non-specific protein-tyrosine kinase, with EC number 2.7.10.2 Known structural/functional Site: . Full crystallographic information is available from OCA.
Reference
Classifying protein kinase structures guides use of ligand-selectivity profiles to predict inactive conformations: Structure of lck/imatinib complex., Jacobs MD, Caron PR, Hare BJ, Proteins. 2007 Oct 1;70(4):1451-1460. PMID:17910071
Page seeded by OCA on Wed Feb 27 07:48:00 2008
