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Rabbit Anti-Phospho-Caspase-9 (Thr125)/FITC Conjugated antibody
background:
This gene encodes a member of the cysteine-aspartic acid protease (caspase) family. Sequential activation of caspases plays a central role in the execution-phase of cell apoptosis. Caspases exist as inactive proenzymes which undergo proteolytic processing at conserved aspartic residues to produce two subunits, large and small, that dimerize to form the active enzyme. This protein can undergo autoproteolytic processing and activation by the apoptosome, a protein complex of cytochrome c and the apoptotic peptidase activating factor 1; this step is thought to be one of the earliest in the caspase activation cascade. This protein is thought to play a central role in apoptosis and to be a tumor suppressor. Alternative splicing results in multiple transcript variants. [provided by RefSeq, May 2013]
Function:
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. Proteolytically cleaves poly(ADP-ribose) polymerase (PARP).
Isoform 2 lacks activity is an dominant-negative inhibitor of caspase-9.
Subunit:
Heterotetramer that consists of two anti-parallel arranged heterodimers, each one formed by a 35 kDa (p35) and a 10 kDa (p10) subunit. Caspase-9 and APAF1 bind to each other via their respective NH2-terminal CED-3 homologous domains in the presence of cytochrome C and ATP. Interacts with the inhibitors BIRC2, BIRC4, BIRC5 and BIRC7. Interacts (inactive form) with EFHD2. Interacts with HAX1.
Tissue Specificity:
Ubiquitous, with highest expression in the heart, moderate expression in liver, skeletal muscle, and pancreas. Low levels in all other tissues. Within the heart, specifically expressed in myocytes.
Post-translational modifications:
Cleavages at Asp-315 by granzyme B and at Asp-330 by caspase-3 generate the two active subunits. Caspase-8 and -10 can also be involved in these processing events.
Phosphorylated at Thr-125 by MAPK1/ERK2. Phosphorylation at Thr-125 is sufficient to block caspase-9 processing and subsequent caspase-3 activation.
Similarity:
Belongs to the peptidase C14A family.
Contains 1 CARD domain.
Database links:
Entrez Gene: 842 Human
Entrez Gene: 12371 Mouse
Entrez Gene: 58918 Rat
Omim: 602234 Human
SwissProt: P55211 Human
SwissProt: Q4FJK5 Mouse
SwissProt: Q920G4 Rat
Unigene: 329502 Human
Unigene: 88829 Mouse
Unigene: 32199 Rat
Important Note:
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.
Caspase-9半胱氨酸蛋白酶家族成员之一，又称ICE-Lap6（ICE Like apoptotease 6）参与细胞凋亡过程和细胞因子的加工过程，在许多胚胎和成人组织中都有分布。此抗体主要用于肿瘤凋亡的研究。
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