| Post Translational Modifications | Phosphorylated by PKA at Ser-15 in vitro, leading to activate kinase activity. Phosphorylation at Ser-15 by CaMK2, leading to increase its activity and promote metaphase II exit during egg activation. |
| Function | Oocyte-specific protein tyrosine kinase that phosphorylates and inhibits CDK1 and acts as a key regulator of meiosis during both prophase I and metaphase II. Required to maintain meiotic arrest in oocytes during the germinal vesicle (GV) stage, a long period of quiescence at dictyate prophase I, by phosphorylating CDK1 at 'Tyr-15', leading to inhibit CDK1 activity and prevent meiotic reentry. Also required for metaphase II exit during egg activation by phosphorylating CDK1 at 'Tyr-15', to ensure exit from meiosis in oocytes and promote pronuclear formation. |
| Peptide Name | Wee1-Like Protein Kinase 2Wee1-Like Protein Kinase 1bWee1b KinaseMwee1b |
| Cellular Localisation | CytoplasmNucleusLocalizes Mainly In The NucleusExported From The Nucleus To The Cytoplasm Before Germinal Vesicle Breakdown (Gvbd)Allowing Meiosis Resumption |
| Alternative Peptide Names | Wee1-Like Protein Kinase 2 proteinWee1-Like Protein Kinase 1b proteinWee1b Kinase proteinMwee1b proteinWee2 proteinWee1b protein |
Information sourced from Uniprot.org
