Title : Mechanisms of p34cdc2 regulation.

Pub. Date : 1993 Mar

PMID : 8441405






4 Functional Relationships(s)
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Protein Name
Organism
1 The kinase activity of human p34cdc2 is negatively regulated by phosphorylation at Thr-14 and Tyr-15. Threonine cyclin dependent kinase 1 Homo sapiens
2 In addition to being negatively regulated by phosphorylation, the kinase activity of p34cdc2 was positively regulated by the cyclin-dependent phosphorylation of Thr-161. Threonine cyclin dependent kinase 1 Homo sapiens
3 Mutation of p34cdc2 at Thr-161 resulted in the formation of an enzymatically inactive p34cdc2/cyclin B complex both in vivo and in vitro. Threonine cyclin dependent kinase 1 Homo sapiens
4 Taken together, these results indicate that inhibition of p34cdc2 kinase activity by phosphorylation of Tyr-15 (within the putative ATP binding domain) or by mutation of Thr-161 involves a mechanism other than inhibition of nucleotide binding. Threonine cyclin dependent kinase 1 Homo sapiens