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CDK1 structures reveal conserved and unique features of the essential cell cycle CDK
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CDK1 structures reveal conserved and unique features of the essential cell cycle CDK
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Journal Article
CDK1 structures reveal conserved and unique features of the essential cell cycle CDK
2015
Overview
CDK1 is the only essential cell cycle CDK in human cells and is required for successful completion of M-phase. It is the founding member of the CDK family and is conserved across all eukaryotes. Here we report the crystal structures of complexes of CDK1–Cks1 and CDK1–cyclin B–Cks2. These structures confirm the conserved nature of the inactive monomeric CDK fold and its ability to be remodelled by cyclin binding. Relative to CDK2–cyclin A, CDK1–cyclin B is less thermally stable, has a smaller interfacial surface, is more susceptible to activation segment dephosphorylation and shows differences in the substrate sequence features that determine activity. Both CDK1 and CDK2 are potential cancer targets for which selective compounds are required. We also describe the first structure of CDK1 bound to a potent ATP-competitive inhibitor and identify aspects of CDK1 structure and plasticity that might be exploited to develop CDK1-selective inhibitors.
Cyclin-dependent kinases are the principal drivers of cell cycle progression. Here the authors present several crystal structures of Cdk1 in complex with cyclin B and/or the assembly factors Cks1/2 and a small molecule inhibitor to reveal key features of this essential mitotic kinase.
Publisher
Nature Publishing Group UK,Nature Publishing Group
Subject
/ 82/16
/ 82/80
/ 82/83
/ Adenosine Triphosphate - chemistry
/ Animals
/ Cancer
/ Carrier Proteins - chemistry
/ Cattle
/ CDC2-CDC28 Kinases - chemistry
/ CDC2-CDC28 Kinases - genetics
/ Cell Cycle Proteins - chemistry
/ Cell Cycle Proteins - genetics
/ Cyclin A
/ Cyclin B
/ Cyclin-Dependent Kinase 2 - chemistry
/ Cyclin-Dependent Kinase 2 - genetics
/ Cyclin-Dependent Kinases - antagonists & inhibitors
/ Cyclin-Dependent Kinases - chemistry
/ Cyclin-Dependent Kinases - genetics
/ Humanities and Social Sciences
/ Humans
/ Kinetics
/ Peptides - chemical synthesis
/ Protein Kinase Inhibitors - chemistry
/ Protein Structure, Secondary
/ Recombinant Fusion Proteins - chemistry
/ Recombinant Fusion Proteins - genetics
/ Science
