Caspase 9, Apoptosis-Related Cysteine Peptidase (CASP9) antibody

Antigen: Caspase 9, Apoptosis-Related Cysteine Peptidase (CASP9)

Synonyms: MCH6, APAF3, APAF-3, ICE-LAP6, CASPASE-9c, Mch6, AI115399, AW493809, Caspase-9, CASP9, LOC100101592

Clonality: Polyclonal

Host: Rabbit

Reactivity: Human, Mouse (Murine), Rat (Rattus)

Conjugate: Un-conjugated

Application: Western Blotting (WB)

Catalog no.: ABIN123306

Additional Information

Alternative name: Caspase-9 / CASP-9-CTD

Immunogen: Mixture of synthetic peptides corresponding to amino acids 345-359 and 366-383 of rat caspase-9-CTD

Cross-Reactivity: Human, Mouse (Murine), Rat (Rattus)

Description: Caspase-9 and Apaf-1 bind to each other, which leads to Caspase-9 activation. Activated caspase-9 cleaves and activates Caspase-3 that is one of the key proteases, being responsible for the proteolytic cleavage of many key proteins in apoptosis. Caspase-9 play a central role in cell death induced by a wide variety of apoptosis inducers including TNFa, TRAIL, anti-CD-95, FADD, and TRADD. Caspase-9 is expressed in variety of human tissues. Recently, a novel isoform of rat Caspase-9 has been identified in which the C terminus of full-length Caspase-9 is replaced with an alternative peptide sequence. This protein called, Casp-9-CTD (where CTD is carboxyl-terminal divergent) is expressed in multiple tissues, with the relative highest statement observed in ovary and heart. The variant C terminus of Casp-9-CTD in rat is derived from an alternative exon of the rat Caspase-9 gene. Casp-9-CTD was found primarily in the cytoplasm and was not detected in the nucleus. Caspase-9-CTD proenzyme is not processed in the cells and lacks apoptotic activity. The Casp-9-CTD transfected cells are resistant to caspases induction by cytochrome c, suggesting that Casp-9-CTD acts as a dominant-negative variant.

Application Details

Application Notes: Western blot (1-2 ug/ml, HeLa, mouse or rat heart whole cell lysate can be used as positive control and a 45-kDa band is detected). Other applications not tested. Optimal dilutions are dependent on conditions and should be determined by the user.

Concentration: 0.5 mg/ml

Purification: Purified

Buffer: PBS containing 0.02 % sodium azide

Storage: Store the antibody at 4-8°C for one month or at -20°C for longer. Avoid repeated freezing and thawing. Shelf Life: one year from despatch.

Research Area: Apoptosis/Necrosis

Restrictions: For Research Use only

Images

Western blot analysis of 20 ug of whole cell lysate from HeLa cells with ABIN123306 at 1 ug/ml dilution

Publications

Srinivasula, Fernandes-Alnemri, Zangrilli et al.: "The Ced-3/interleukin 1beta converting enzyme-like homolog Mch6 and the lamin-cleaving enzyme Mch2alpha are substrates for the apoptotic mediator CPP32." in: The Journal of biological chemistry, Vol. 271, Issue 43, pp. 27099-106, 1996 (PubMed).

Li, Nijhawan, Budihardjo et al.: "Cytochrome c and dATP-dependent formation of Apaf-1/caspase-9 complex initiates an apoptotic protease cascade." in: Cell, Vol. 91, Issue 4, pp. 479-89, 1997 (PubMed).

Pan, ORourke, Dixit: "Caspase-9, Bcl-XL, and Apaf-1 form a ternary complex." in: The Journal of biological chemistry, Vol. 273, Issue 10, pp. 5841-5, 1998 (PubMed).