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pubmed:abstractText |
The highly conserved Cdc2 serine/threonine kinase plays a central role in cell cycle progression. Although Cdc2 levels remain constant throughout the cell cycle, Cdc2 kinase activity peaks at the G2/M boundary, in order to drive entry into mitosis. In the model organism Schizosaccharomysces pombe, potentially active Cdc2/Cdc13 kinase complex accumulates throughout the S and G2 phases of the cell cycle. This complex, however, is maintained in an active state by Wee1/Mik1-mediated phosphorylation at Y15 (and, possibly, T14). At the G2/M boundary, the Cdc25 protein phosphatase is activated to dephosphorylate the Cdc2/Cdc13 complex, resulting in abrupt activation of Cdc2 kinase activity and entry into mitosis.
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pubmed:affiliation |
Howard Hughes Medical Institute, Department of Cell Biology, Vanderbilt University, Nashville, TN 37212, USA.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, Non-P.H.S.,
Review,
Research Support, Non-U.S. Gov't
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