recombinant
expressed in E. coli (C-terminal histidine-tagged)
Quality Segment
assay
≥90% (SDS-PAGE)
form
buffered aqueous solution
specific activity
>2,000 units/mg protein
mol wt
N-terminal prodomain plus the large subunit. 36 kDa (caspase 9 expressed as a C-terminal histidine-tagged protein appears as a two-subunit protein), small subunit 13 kDa (subunit containing the histidine tag)
UniProt accession no.
shipped in
dry ice
storage temp.
−70°C
Gene Information
human ... CASP9(842)
Biochem/physiol Actions
Activation of caspase-9 (CASP9) through apoptotic stimuli initiates the caspase cascade. Caspases have been implicated in many disorders including cancer, inflammatory disease, neurodegenerative diseases, stroke and myocardial infarction.
When cells receive apoptotic stimuli, such as activation of the TNFα/Fas cell surface receptor, caspase 8 activation, Bid processing and its translocation to the mitochondria ensue. As a result mitochondria release cytochrome c which then binds to Apaf-1, the mammalian Ced-4 homologue, together with dATP. The resultant complex recruits caspase 9 leading to its activation. It then cleaves downstream caspases such as caspase 3, 6, and 7, initiating the caspase cascade. Caspase 9 exhibits basal activity. It can be further activated via interaction of its N-terminal prodomain with the activator protein Apaf-1 in the presence of cytochrome c and dATP. Caspases have been implicated in many disorders including cancer, inflammatory disease, neurodegenerative diseases, stroke and myocardial infarction.
Physical form
Solution in 10% sucrose containing 50 mM HEPES, pH 7.5, 5 mM DTT, 0.1% CHAPS, 1 mM EDTA, 50 mM NaCl.
Other Notes
One unit will cleave 1.0 nmol of Ac-Leu-Glu-His-Asp-AFC per hr at 25 °C at pH 6.5.
存储类别
12 - Non Combustible Liquids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)