Protein
Wee1-like protein kinase 1-B
Function
Acts as a zygotic 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.
Similarity
Belongs to the protein kinase superfamily. Ser/Thr protein kinase family. WEE1 subfamily.
Sequence
MNVQPRNMNVQPRNMNVQPVRHKLFFSDTDEEEEDGHSTGEDSAFQESDSPVSRQREKQEGKPPGGTWEELEEEEGFGSSPIKSPGDFFMSDSPSYRQLAPASPTRSPQGPTSPIPECPGTPPHKTFRKLRLFDTPHTPKSLLSKARGIGSSALRFRGGTLFREAEKAPKPEFVYSTPQVNINPFTPDSLEIQSSAGLCRGRKRALLNDSCGEDMEGSDCELEDEDIRPAKRIPITESNMKSRYATEFHELEKIGSGEFGSVFKCVKRLDGCIYAIKRSKKPLAGSVDEQNALREVYAHAVLGQHPHVVRYYSAWAEDDHMLIQNEYCNGGSLSDVISENYRTMQYFTEPELKDLLLQVARGLKYIHSMSLVHMDIKPSNIFISRTTLPNTAVEEADDEECGSGKVIYKIGDLGHVTRVSSPQVEEGDSRFLANEVLQENYTHLAKADIFALALTVWSAAGAEPFPTNGDQWHEIRQGKLPRVPQLLSQEFVDLIKLMISPDPEKRPSSVALVKHSVLLSASRKSAEQLRIELDAEKFKNALLQKELKKAQIAKAAAEERAHFPDRIATRSTTQNNRTTRLIGKKMNRSVSLTIY