M-phase inducer phosphatase 1 also known as dual specificity phosphatase Cdc25A is a protein that in humans is encoded by the cell division cycle 25 homolog A (CDC25A) gene.

Cdc25A activates cyclin D-CDK4 complex and cyclin E-CDK2 complex, which phosphorylate Rb and dissociate Rb from complex with E2F1, releasing inhibition on E2F1, whose activity is essential for G 1 /S transition.

2024年12月24日 · CDC25A is a member of the CDC25 family of phosphatases. CDC25A is required for progression from G1 to the S phase of the cell cycle. It activates the cyclin-dependent kinase CDC2 by removing two phosphate groups.

Most other model organisms examined have three Cdc25s, designated Cdc25A, Cdc25B, and Cdc25C. An exception is the nematode Caenorhabditis elegans, which has four distinct Cdc25 genes (Cdc-25.1 to Cdc-25.4).

Overexpression of Cdc25A promotes tumorigenesis, and is frequently observed in various types of cancer. Here we briefly summarize current understanding of the role of Cdc25A in cell proliferation and apoptosis, as well as the impact of overexpression of Cdc25A on tumorigenesis.

In this study we investigate the biological function of cdc25A. Although very potent in rescuing the S.pombe cdc25 mutant, cdc25A is less structurally related to the S.pombe enzyme.

2016年4月21日 · We report here on a genome-wide CRISPR-Cas9 screen that identified CDC25A as a major determinant of sensitivity to ATR inhibition. CDC25A-deficient cells resist high doses of ATR inhibitors, which we show is due to their failure …

Studies found that CDC25A, together with CDC25B and CDC25C, generates a cellular phosphatase pool required for full activation of cyclinB-Cdk1. CDC25A binds to cyclinB-Cdk1 in vivo and increases the endogenous cyclin B-Cdk1 kinase activity, thereby, modulating G2/M progression (Figure 1; Table 1).

2021年8月6日 · Here we describe a novel ubiquitin/proteasome-mediated pathway negatively regulating CDC25A stability, dependent on its phosphorylation by the serine/threonine kinase DYRK2.

2025年1月4日 · CDC25A is a member of the CDC25 family of phosphatases. CDC25A is required for progression from G1 to the S phase of the cell cycle. It activates the cyclin-dependent kinase CDC2 by removing two phosphate groups.