{"title":"P53 pathways involving G2 checkpoint regulators and the role of their subcellular localisation.","authors":"Z E Winters","doi":"","DOIUrl":null,"url":null,"abstract":"<p><p>DNA damage activates checkpoint pathways to produce a G1 or G2 cell cycle arrest and DNA repair. G2 checkpoint integrity prevents inappropriate mitosis of unrepaired DNA. Cell cycle progression is determined by cyclin-dependent kinase (CDK) enzymes in association with specific cyclin proteins, with Cdc2/cyclin B regulating mitosis. The tumour suppressor p53 re-enforces G2 arrest through the CDK inhibitor, p21(WAF1/CIPI). Functional regulation of G2 checkpoint proteins occurs through levels of protein expression, phosphorylation and subcellular localisation</p>","PeriodicalId":76058,"journal":{"name":"Journal of the Royal College of Surgeons of Edinburgh","volume":"47 4","pages":"591-8"},"PeriodicalIF":0.0000,"publicationDate":"2002-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the Royal College of Surgeons of Edinburgh","FirstCategoryId":"1085","ListUrlMain":"","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
DNA damage activates checkpoint pathways to produce a G1 or G2 cell cycle arrest and DNA repair. G2 checkpoint integrity prevents inappropriate mitosis of unrepaired DNA. Cell cycle progression is determined by cyclin-dependent kinase (CDK) enzymes in association with specific cyclin proteins, with Cdc2/cyclin B regulating mitosis. The tumour suppressor p53 re-enforces G2 arrest through the CDK inhibitor, p21(WAF1/CIPI). Functional regulation of G2 checkpoint proteins occurs through levels of protein expression, phosphorylation and subcellular localisation
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