Product Pathways - Cell Cycle / Checkpoint
Cyclin B1 (V152) Mouse mAb #4135
|4135S||100 µl (20 western blots)||---||In Stock||---|
|4135||carrier free and custom formulation / quantity||email request|
|W||1:2000||Human, Mouse||Endogenous||55||Mouse IgG1|
Species cross-reactivity is determined by western blot.
Applications Key: W=Western Blotting, F=Flow Cytometry
Species predicted to react based on 100% sequence homology: Hamster.
Specificity / Sensitivity
Cyclin B1 (V152) Mouse mAb detects endogenous levels of cyclin B1 independent of phosphorylation.
Source / Purification
Monoclonal antibody was produced by immunizing animals with a peptide corresponding to a sequence from hamster cyclin B1.
Western blot analysis of extracts from HT29 cells, control (cont.) or nocodazole-treated (50 ng/ml) (M), using Phospho-cyclin B1 (Ser147) Antibody #4131 (upper), Cyclin B1 (V152) Mouse mAb (middle), or Cdc25C Antibody #9522 (lower).
Cyclins are a family of proteins that activate specific cyclin-dependent kinases required for progression through the cell cycle. The entry of all eukaryotic cells into mitosis is regulated by activation of cdc2/cdk1 at the G2/M transition. This activation is a multi-step process that begins with the binding of the regulatory subunit, cyclin B1, to cdc2/cdk1 to form the mitosis-promoting factor (MPF). MPF remains in the inactive state until phosphorylation of cdc2/cdk1 at Thr161 by cdk activating kinase (CAK) (1,2) and dephosphorylation of cdc2/cdk1 at Thr14/Tyr15 by cdc25C (3-5). Five cyclin B1 phosphorylation sites (Ser116, 126, 128, 133, and 147) are located in the cytoplasmic retention signal (CRS) domain and are thought to regulate the translocation of cyclin B1 to the nucleus at the G2/M checkpoint, promoting nuclear accumulation and initiation of mitosis (6-9). While MPF itself can phosphorylate Ser126 and Ser128, polo-like kinase 1 (PLK1) phosphorylates cyclin B1 preferentially at Ser133 and possibly at Ser147 (6,10). At the end of mitosis, cyclin B1 is targeted for degradation by the anaphase-promoting complex (APC), allowing for cell cycle progression (11). Research studies have shown that cyclin B1 is overexpressed in breast, prostate, and non-small cell lung cancers (12-14).
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- Brandeis, M. et al. (1998) . Proc. Natl. Acad. Sci. U S A 95, 4344-4349. Applications: IHC-P (paraffin).
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This product is intended for research purposes only. The product is not intended to be used for therapeutic or diagnostic purposes in humans or animals.
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