Journal
FEBS LETTERS
Volume 581, Issue 6, Pages 1166-1172Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.febslet.2007.02.028
Keywords
Cks2; tumor suppressor p53; p63; p73; cyclin-dependent kinase subunit 2; transcriptional repression
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Cks2 proteins are essential components of cyclin/cyclin-dependent kinase complexes and contribute to cell cycle control. We identify Cks2 as a transcriptional target downregulated by the tumor suppressor p53. Cks2 expression was found to be repressed by p53 both at the mRNA and the protein levels. p53 downregulates transcription from the Cks2 promoter in a dosedependent manner and in all cell types tested. This repression appears to be independent of p53 binding to the Cks2 promoter. In contrast to p53, neither p63 nor p73 proteins can repress Cks2 transcription. Thus p53, rather than its homologues p63 and p73, may contribute to control of the first metaphase/anaphase transition of mammalian mciosis by downregulation of Cks2 expression. (c) 2007 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.
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