Product Pathways - Apoptosis
Phospho-Bcl-2 (Ser70) (5H2) Rabbit mAb #2827
PhosphoSitePlus® protein, site, and accession data: Bcl-2
| Applications | Reactivity | Sensitivity | MW (kDa) | Isotype |
|---|---|---|---|---|
| W IF-IC F | H | Endogenous | 28 | Rabbit IgG |
Applications Key:
W=Western Blotting
IF-IC=Immunofluorescence (Immunocytochemistry)
F=Flow Cytometry
Reactivity Key:
H=Human
Species cross-reactivity is determined by western blot. Species enclosed in parentheses are predicted to react based on 100% sequence homology.
Protocols
- 2827:
- Flow, Immunofluorescence, Western Blotting
Specificity / Sensitivity
Phospho-Bcl-2 (Ser70) (5H2) Rabbit mAb detects endogenous levels of Bcl-2 only when phosphorylated at serine 70. The antibody does not cross-react with nonphosphorylated Bcl-2 at endogenous levels or with other Bcl-2 family members.
Source / Purification
Monoclonal antibody is produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding serine 70 of human Bcl-2.
Western Blotting
Western blot analysis of extracts from Jurkat cells, untreated or treated with paclitaxel (1 μM, overnight) and with or without λ phosphatase, using Phospho-Bcl-2 (Ser70) (5H2) Rabbit mAb (upper) or Bcl-2 #2876 (lower).
Flow Cytometry
Flow cytometric analysis of Jurkat cells, using Phospho-Bcl-2 (Ser70) (5H2) Rabbit mAb versus propidium iodide (DNA content).
IF-IC
Confocal immunofluorescent analysis of SH-SY5Y cells using Phospho-Bcl-2 (Ser70) (5H2) Rabbit mAb (red) and Phospho-Histone H3 (Ser10) (6G3) Mouse mAb #9706 (green). Blue pseudocolor = DRAQ5® #4084 (fluorescent DNA dye).
Background
Bcl-2 exerts a survival function in response to a wide range of apoptotic stimuli through inhibition of mitochondrial cytochrome c release (1). It has been implicated in modulating mitochondrial calcium homeostasis and proton flux (2). Several phosphorylation sites have been identified within Bcl-2 including Thr56, Ser70, Thr74, and Ser87 (3). It has been suggested that these phosphorylation sites may be targets of the ASK1/MKK7/JNK1 pathway and that phosphorylation of Bcl-2 may be a marker for mitotic events (4,5). Mutation of Bcl-2 at Thr56 or Ser87 inhibits its anti-apoptotic activity during glucocorticoid-induced apoptosis of T lymphocytes (6). Interleukin-3 and JNK-induced Bcl-2 phosphorylation at Ser70 may be required for its enhanced anti-apoptotic functions (7).
- Murphy, K.M. et al. (2000) Cell Death Differ 7, 102-11.
- Zhu, L. et al. (1999) J Biol Chem 274, 33267-73.
- Maundrell, K. et al. (1997) J Biol Chem 272, 25238-42.
- Yamamoto, K. et al. (1999) Mol Cell Biol 19, 8469-78.
- Ling, Y.H. et al. (1998) J Biol Chem 273, 18984-91.
- Huang, S.T. and Cidlowski, J.A. (2002) FASEB J 16, 825-32.
- Deng, X. et al. (2001) J Biol Chem 276, 23681-8.
Application References
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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.