CycLex Cdc25 Combo Protein Phosphatase Fluorometric Assay Kit
Code | Size | Price |
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MBL-CY-1355 | 150 Assays | £647.00 |
Quantity:
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Overview
Regulatory Status: RUO
Shipping:
dry ice
Storage:
-20°C. Please refer to datasheet for additional information
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Further Information
Background:
Activation of cyclin-dependent kinases in higher eukaryotic cells can be achieved through
dephosphorylation of two conserved residues, Thr14 and Tyr15 (1) by members of the Cdc25
phosphatase family, Cdc25A, Cdc25B and Cdc25C. The Cdc25 dual-specificity phosphatases control
progression through the eukaryotic cell division cycle by activating cyclin-dependent kinases. Cdc25A
plays an important role at the G1/S-phase transition. Cdc25A degradation during mitotic exit and in early
G1 is mediated by the anaphase-promoting complex or cyclosome (APC/C)(Cdh1) ligase, and that a
KEN-box motif in the N-terminus of the protein is required for its targeted degradation (2, 3). Cdc25B
undergoes activation during S-phase and plays a role in activating the mitotic kinase Cdk1/cyclin B in
the cytoplasm (4-6). Active Cdk1/cyclin B then phosphorylates and activates Cdc25C leading to a
positive feedback mechanism and to entry into mitosis. In addition to their essential function in the
normal cell cycle, cdc25 phosphatases are involved in the checkpoint-induced control of cell cycle
progression (7-9). Finally, Cdc25A and B phosphatases have been shown to possess an important
oncogenic potential and to be overexpressed in a variety of cancers and cancer cell lines (4, 10).
Description:
The CycLex® Research product Cdc25 Combo Fluorometric Assay kit is a fluorometric and
non-radioactive assay designed to measure the activity of Cdc25A, B and C protein phosphatase. This
96-well assay is useful for screening inhibitors and modulators of Cdc25A, B and C activities in HTS.
The kit includes all necessary components, including recombinant, human Cdc25A, B and C (catalytic
domain), for use in preinvestigational drug discovery assays.
Gene IDs:
Human: 995 Mouse: 12532
Kit Components:
10x Assay Buffer, 10x 3-o-methyl fluorescein phosphate (OMFP), Recombinant Human Cdc25A Cdc25B Cdc25C, 100x Cdc25 Inhibitor, Stop Solution
Target:
Cdc25
References
1. Morgan, D. O. (1997) Annu. Rev. Cell Dev. Biol. 13, 261-291 2. Jinno, S., Suto, K., Nagata, A., Igarashi, M., Kanaoka, Y., Nojima, H., and Okayama, H. (1994)
EMBO J. 13, 1549-1556
3. Hoffmann, I., Draetta, G., and Karsenti, E. (1994) EMBO J. 13, 4302-4310
4. .Nagata, A., Igarashi, M., Jinno, S., Suto, K., and Okayama, H. (1991) New Biol. 3, 959-968
5. Karlsson, C., Katich, S., Hagting, A., Hoffmann, I., and Pines, J. (1999) J. Cell Biol. 146, 573-583
6. Hoffmann, I., Clarke, P. R., Marcote, M. J., Karsenti, E., and Draetta, G. (1993) EMBO J. 12, 53-63
7. Furnari, B., Rhind, N., and Russell, P. (1997) Science 277, 1495-1497
8. Sanchez, Y., Wong, C., Thoma, R. S., Richman, R., Wu, Z., Piwnica-Worms, H., and Elledge, S. J.
(1997) Science 277, 1497-1501
9. Peng, C.-Y., Graves, P. R., Thoma, R. S., Wu, Z., Shaw, A. S., and Piwnica-Worms, H. (1997)
Science 277, 1501-1505
10. Galaktionov, K., Lee, A. K., Eckstein, J., Draetta, G., Meckler, J., Loda, M., and Beach, D. (1995)
Science 269, 1575-1577