Caspase 9 Monoclonal Antibody (96-2-2), eBioscience™, Invitrogen™

Description

• Description: Caspase-9, formerly called Apaf-3, binds to Apaf-1 in the presence of cytochrome c and dATP (3), which leads to caspase-9 activation
• Activated caspase-9 in turn cleaves and activates caspase-3; caspase-9 thus is the most upstream member of the apoptotic protease cascade that is triggered by cytochrome c and dATP
• Caspase-9 is essentially localized in mitochondria, the disruption of the outer mitochondrial membrane occurring early during apoptosis is critical for its subcellular redistribution and activation
• Applications Tested: ELISA, Immunoprecipitation, Western Blotting
• Reconstitution instructions: A quick spin is recommended followed by reconstitution in PBS, pH 7.2 to a concentration of 0.1-1.0 mg/mL
• This solution can then be diluted into other aqueous buffers and stored at 4°C for 1 week or -20°C for future use
• Caspase 9 (ICE-like apoptotic protease 6, ICE LAP6, apoptotic protease Mch6, apoptotic protease activating factor 3, Apaf3) is a member of the peptidase family C14 that contains a CARD domain
• Caspases are cysteine proteases, expressed as inactive precursors, that mediate apoptosis by proteolysis of specific substrates
• Caspase 9 is active as a heterotetramer, is present in the cytosol and, upon activation, translocates to the mitochondria
• Caspase 9 is involved in the caspase activation cascade responsible for apoptosis execution and cleaves/activates Caspase 3 and Caspase 6
• Further, Caspase 9 is involved in the activation cascade of caspases responsible for apoptosis execution
• Binding of caspase-9 to Apaf- 1 leads to activation of the protease which then cleaves and activates caspase-3
• Caspase 9 promotes DNA damage-induced apoptosis in a ABL1/c-Abl-dependent manner, and proteolytically cleaves poly(ADP- ribose) polymerase (PARP)
• Caspase 9 is expressed in variety of human tissues
• An 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
• Mutations in Caspase 9 affect brain development
• In mice, insufficient Caspase 9 have resulted in abnormal cerebrum development and neuron development
• In humans, dysfunctional Caspase 9 expression vary from tissue to tissue
• Low levels of Caspase 9 may play a role in cancer development and neurodegenerative diseases such as Alzheimer’s Disease (AD).