FUNCTION: Oocyte-specific protein tyrosine kinase that phosphorylates and inhibits CDK1/CDC2 and acts as a key regulator of meiosis during both prophase I and metaphase II (PubMed:29606300). Required to maintain meiotic arrest in oocytes during the germinal vesicle (GV) stage, a long period of quies...
FUNCTION: Oocyte-specific protein tyrosine kinase that phosphorylates and inhibits CDK1/CDC2 and acts as a key regulator of meiosis during both prophase I and metaphase II (PubMed:29606300). 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 (By similarity). {ECO:0000250|UniProtKB:Q66JT0, ECO:0000269|PubMed:29606300}.
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GO - Biological processes (BP):
female meiotic nuclear division [GO:0007143]; female pronucleus assembly [GO:0035038]; mitotic cell cycle [GO:0000278]; negative regulation of cyclin-dependent protein serine/threonine kinase activity [GO:0045736]; negative regulation of oocyte maturation [GO:1900194]; positive regulation of phospho...
female meiotic nuclear division [GO:0007143]; female pronucleus assembly [GO:0035038]; mitotic cell cycle [GO:0000278]; negative regulation of cyclin-dependent protein serine/threonine kinase activity [GO:0045736]; negative regulation of oocyte maturation [GO:1900194]; positive regulation of phosphorylation [GO:0042327]; regulation of fertilization [GO:0080154]; regulation of meiosis I [GO:0060631]
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GO - Molecular function (MF):
ATP binding [GO:0005524]; magnesium ion binding [GO:0000287]; non-membrane spanning protein tyrosine kinase activity [GO:0004715]; protein kinase activity [GO:0004672]; protein serine/threonine/tyrosine kinase activity [GO:0004712]; protein tyrosine kinase activity [GO:0004713]...
ATP binding [GO:0005524]; magnesium ion binding [GO:0000287]; non-membrane spanning protein tyrosine kinase activity [GO:0004715]; protein kinase activity [GO:0004672]; protein serine/threonine/tyrosine kinase activity [GO:0004712]; protein tyrosine kinase activity [GO:0004713]
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GO - Cellular component (CC):
cytosol [GO:0005829]; nucleoplasm [GO:0005654]; nucleus [GO:0005634]; plasma membrane [GO:0005886]...
cytosol [GO:0005829]; nucleoplasm [GO:0005654]; nucleus [GO:0005634]; plasma membrane [GO:0005886]
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