Cdc25A phosphatase: combinatorial phosphorylation, ubiquitylation and proteolysis
نویسندگان
چکیده
منابع مشابه
The catalytic mechanism of Cdc25A phosphatase.
Cdc25 phosphatases are dual specificity phosphatases that dephosphorylate and activate cyclin-dependent kinases (CDKs), thereby effecting the progression from one phase of the cell cycle to the next. Despite its central role in the cell cycle, relatively little is known about the catalytic mechanism of Cdc25. In order to provide insights into the catalytic mechanism of Cdc25, we have performed ...
متن کاملPhosphorylation meets proteolysis.
Phosphorylation is a reversible post-translational modification that regulates many proteins and enzymes, including proteases, as shown by two recent publications. Huang and colleagues and Velázquez-Delgado and Hardy (this issue of Structure) describe how phosphorylation activates the protease activity of the deubiquitinating enzyme DUBA and how it inhibits caspase-6, respectively.
متن کاملRole of the Cdc25A phosphatase in human breast cancer.
The phosphatase Cdc25A plays an important role in cell cycle regulation by removing inhibitory phosphates from tyrosine and threonine residues of cyclin-dependent kinases, and it has been shown to transform diploid murine fibroblasts in cooperation with activated Ras. Here we show that Cdc25A is overexpressed in primary breast tumors and that such overexpression is correlated with higher levels...
متن کاملCDC25A phosphatase: a rate-limiting oncogene that determines genomic stability.
CDC25A is a critical regulator of cell cycle progression and checkpoint response. Overexpression of this cyclin-dependent kinase phosphatase occurs often in human cancers. Our recent genetic studies in the mouse indicate that restricting CDC25A can limit tumorigenesis induced by the HER2/neu-RAS oncogenic pathway without compromising normal cell division or viability. These findings offer a sou...
متن کاملImpact of Ionizing Radiation on the Expression of CDC25A Phosphatase (in vivo)
Background and Objective: The cell division cycle 25 (CDC25)is a familyof highly conserved dual-specificity phosphatases that activate cyclin-dependent kinase complexes. These complexes are the main cell cycle regulators. Mammalian cells ,exposure to DNA damaging radiations such as ionizing radiation and ultraviolet light, prevent cell cycle progression by activation of checkpoint pathways an...
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ژورنال
عنوان ژورنال: Oncogene
سال: 2004
ISSN: 0950-9232,1476-5594
DOI: 10.1038/sj.onc.1207394