Product Pathways - Cell Cycle / Checkpoint
Phospho-cdc25C (Ser216) (63F9) Rabbit mAb #4901
|W IP IHC-P||H Mk||Endogenous||60||Rabbit IgG|
Reactivity Key: H=Human Mk=Monkey
Species cross-reactivity is determined by western blot. Species enclosed in parentheses are predicted to react based on 100% sequence homology.
Specificity / Sensitivity
Phospho-cdc25C (Ser216) (63F9) Rabbit mAb detects endogenous levels of cdc25C only when phosphorylated at Ser216.
Source / Purification
Monoclonal antibody is produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Ser216 of human cdc25C.
Western Blot analysis of HT29 cells, untreated, nocodazole-treated, and lambda phosphotase-treated, using Phospho-cdc25C (Ser216) antibody (upper), and cdc25C (5H9) Rabbit Mab, #4688, (lower).
Western blot analysis of GST-cdc25C, unphosphorylated or phosphorylated in vitro by Chk2, using Phospho-cdc25C (Ser216) (63F9) Rabbit mAb (upper) or cdc25C antibody #9522 (lower).
Immunohistochemical analysis of paraffin-embedded human breast carcinoma, using Phospho-cdc25C (Ser216) (63F9) Rabbit mAb.
Immunohistochemical analysis of paraffin-embedded human colon carcinoma, showing cytoplasmic localization, using Phospho-cdc25C (Ser216) (63F9) Rabbit mAb.
Immunohistochemical analysis of paraffin-embedded human lung carcinoma, using Phospho-cdc25C (Ser216) (63F9) Rabbit mAb.
Immunohistochemical analysis of paraffin-embedded human lung carcinoma, untreated (left) or lambda phosphatase-treated (right), using Phospho-cdc25C (Ser216) (63F9) Rabbit mAb.
Cdc25 is a protein phosphatase responsible for dephosphorylating and activating cdc2, a crucial step in regulating the entry of all eukaryotic cells into mitosis (1). cdc25C is constitutively phosphorylated at Ser216 throughout interphase by c-TAK1, while phosphorylation at this site is DNA damage-dependent at the G2/M checkpoint (2). When phosphorylated at Ser216, cdc25C binds to members of the 14-3-3 family of proteins, sequestering cdc25C in the cytoplasm and thereby preventing premature mitosis (3). The checkpoint kinases Chk1 and Chk2 phosphorylate cdc25C at Ser216 in response to DNA damage (4,5).
- Jessus, C. and Ozon, R. (1995) Prog. Cell Cycle Res. 1, 215-228.
- Peng, C.Y. et al. (1997) Science 277, 1501-1505.
- Kumagai, A. and Dunphy, W.G. (1999) Genes Dev. 13, 1067-1072.
- Blasina, A. et al. (1999) Curr. Biol. 9, 1-10.
- Furnari, B. et al. (1999) Mol. Biol. Cell 10, 833-845.
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Rabbit Monoclonals Produced Using Epitomics® Technology, U.S. Patent No. 5,675,063.
For Research Use Only. Not For Use In Diagnostic Procedures.