{"title":"Cell cycle regulation by the Cdc25 phosphatase family.","authors":"I Nilsson, I Hoffmann","doi":"10.1007/978-1-4615-4253-7_10","DOIUrl":null,"url":null,"abstract":"<p><p>Activation of cyclin-dependent kinases in higher eukaryotic cells can be achieved through dephosphorylation by members of the Cdc25 phosphatase family, Cdc25A, Cdc25B and Cdc25C. Cdc25A plays an important role at the G1/S-phase transition. Cdc25B undergoes activation during S-phase and plays a role in activating the mitotic kinase Cdk1/cyclin B in the cytoplasm. Active Cdk1/cyclin B then phosphorylates and activates Cdc25C leading to a positive feedback mechanism and to entry into mitosis. Cdc25A and B are potential human oncogenes. In addition, Cdc25 is a main player of the G2 arrest caused by DNA damage or in the presence of unreplicated DNA.</p>","PeriodicalId":79529,"journal":{"name":"Progress in cell cycle research","volume":"4 ","pages":"107-14"},"PeriodicalIF":0.0000,"publicationDate":"2000-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/978-1-4615-4253-7_10","citationCount":"453","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Progress in cell cycle research","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1007/978-1-4615-4253-7_10","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 453
Abstract
Activation of cyclin-dependent kinases in higher eukaryotic cells can be achieved through dephosphorylation by members of the Cdc25 phosphatase family, Cdc25A, Cdc25B and Cdc25C. Cdc25A plays an important role at the G1/S-phase transition. Cdc25B undergoes activation during S-phase and plays a role in activating the mitotic kinase Cdk1/cyclin B in the cytoplasm. Active Cdk1/cyclin B then phosphorylates and activates Cdc25C leading to a positive feedback mechanism and to entry into mitosis. Cdc25A and B are potential human oncogenes. In addition, Cdc25 is a main player of the G2 arrest caused by DNA damage or in the presence of unreplicated DNA.
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