Difference between revisions of "Phosphtase Subfamily CDC25"

Revision as of 06:42, 30 December 2014

Phosphatase Classification: Superfamily CC3 (Rhondanese): Family CDC25: Subamily CDC25

CDC25 subfamily has three member genes in human, CDC25A, CDC25B, CDC25C. They contain a catalytic domain on the C-terminus [1, 2], and a less-conserved N-terminal regulatory region [3], which can be phosphorylated and ubiquitinated. CDC25 activates cyclin-dependent kinases (CDKs) by dephosphorylating two sites within their ATP binding loop. CDKs regulate key transitions between cell cycle phases, and are key components of the checkpoint pathways involved in DNA damage. Thus, it is not suppressing to find it overexpressed in many human cancers [4].

CDC25 is found in most animals, but is absent from land plants and green alga Chalmydomonas. In excavates, they are found in Trichomonas, but not Giardia, Leishmania, or Trypanosomes.

References

1. Fauman EB, Cogswell JP, Lovejoy B, Rocque WJ, Holmes W, Montana VG, Piwnica-Worms H, Rink MJ, and Saper MA. Crystal structure of the catalytic domain of the human cell cycle control phosphatase, Cdc25A. Cell. 1998 May 15;93(4):617-25. DOI:10.1016/s0092-8674(00)81190-3 | PubMed ID:9604936 | HubMed [fauman98]
2. Reynolds RA, Yem AW, Wolfe CL, Deibel MR Jr, Chidester CG, and Watenpaugh KD. Crystal structure of the catalytic subunit of Cdc25B required for G2/M phase transition of the cell cycle. J Mol Biol. 1999 Oct 29;293(3):559-68. DOI:10.1006/jmbi.1999.3168 | PubMed ID:10543950 | HubMed [reynolds99]
3. Forrest A and Gabrielli B. Cdc25B activity is regulated by 14-3-3. Oncogene. 2001 Jul 19;20(32):4393-401. DOI:10.1038/sj.onc.1204574 | PubMed ID:11466620 | HubMed [forrest01]
4. Boutros R, Lobjois V, and Ducommun B. CDC25 phosphatases in cancer cells: key players? Good targets?. Nat Rev Cancer. 2007 Jul;7(7):495-507. DOI:10.1038/nrc2169 | PubMed ID:17568790 | HubMed [Boutros07]