DKFZp686I18166, EC 2.7.10.2, FLJ16446, Wee 1, WEE-1, WEE1 protein, Wee1 homolog, WEE1 homolog S. pombe, Wee1 like protein kinase, Wee1 tyrosine kinase, Wee1+ homolog, Wee1+ S. pombe homolog, WEE1A, Wee1A kinase, WEE1hu, WEE1 tyrosine kinase isoform 1, MGC105683, WEE1_HUMAN.
This gene encodes a nuclear protein, which is a tyrosine kinase belonging to the Ser/Thr family of protein kinases. Acts as a negative regulator of entry into mitosis (G2 to M transition) by protecting the nucleus from cytoplasmically activated cyclin B1-complexed CDK1 before the onset of mitosis by mediating phosphorylation of CDK1 on Tyr-15. Specifically phosphorylates and inactivates cyclin B1-complexed CDK1 reaching a maximum during G2 phase and a minimum as cells enter M phase. Phosphorylation of cyclin B1-CDK1 occurs exclusively on Tyr-15 and phosphorylation of monomeric CDK1 does not occur. Its activity increases during S and G2 phases and decreases at M phase when it is hyperphosphorylated. A correlated decrease in protein level occurs at M/G1 phase, probably due to its degradation.
