Initiator Caspases Antibody Sampler Kit

    • Initiator Caspases Antibody Sampler Kit -Elabscience
    • Initiator Caspases Antibody Sampler Kit -Elabscience
    • Initiator Caspases Antibody Sampler Kit -Elabscience

      Catalog number:E-AB-K1854

      • 4*20μL
      - +
      Price: $248

      Applications: WB

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      Product Includes

      Product name Specifications Application
      CASP9 Polyclonal Antibody 20μL WB,IHC-p,IF,ELISA
      CASP3 Polyclonal Antibody 20μL WB,IHC-p,IF,ELISA
      CASP2 Polyclonal Antibody 20μL WB,IHC-p,ELISA
      CASP8 Polyclonal Antibody 20μL WB,IHC-p,IF,ELISA
      Goat Anti-Rabbit IgG (H+L)(peroxidase/HRP conjugated) 120μL WB,IHC,ELISA

      Product Photos

      Western Blot analysis of various cells using CASP9 Polyclonal Antibody at dilution of 1:500.

      Western Blot analysis of KB, MCF7 cells using CASP3 Polyclonal Antibody at dilution of 1:1000.

      Western Blot analysis of K562 cells with CASP2 Polyclonal Antibody

      Western Blot analysis of 3T3 cells with CASP8 Polyclonal Antibody

      Product description

      The Initiator Caspases Antibody Sampler Kit provides an economical means of evaluating initiator (apical) caspase proteins. The kit contains enough primary antibody to perform two western blots with each primary antibody.


      Apoptosis is a regulated physiological process leading to cell death. Caspases, a family of cysteine acid proteases, are central regulators of apoptosis. Initiator caspases (including 2, 8, 9, 10 and 12) are closely coupled to proapoptotic signals, which include FasL, TNF-α, and DNA damage. Once activated, these caspases cleave and activate downstream effector caspases (including 3, 6 and 7), which in turn cleave cytoskeletal and nuclear proteins such as PARP, α-fodrin, DFF and lamin A; inducing apoptosis. Formation of a death-inducing signaling complex (DISC) around the receptors for death factors, including FasL and TNF-α, is essential for receptor-mediated apoptosis. Upon ligand activation, Fas and TNF-R1 associate with death domain (DD) containing adaptor proteins FADD (Fas associated death domain) and TRADD (TNF-R1 associated death domain). In addition to a carboxy-terminal DD, FADD contains an amino-terminal death effector domain (DED) that binds to DEDs and activates initiator caspase 8 (FLICE, Mch5, MACH) and caspase 10 (FLICE2, Mch4). TRADD does not contain a DED and therefore must associate with FADD in response to TNF-R1 driven apoptosis. Caspase-9 (ICE-LAP6, Mch6) is activated through the mitochondrial-mediated pathway. Cytochrome c released from mitochondria associates with procaspase-9 (47 kDa)/Apaf-1. Apaf-1 mediated activation of caspase-9 involves proteolytic processing resulting in cleavage at Asp315 and producing a p35 subunit. Another cleavage occurs at Asp330 producing a p37 subunit that can amplify the apoptotic response. Caspase-2 (Nedd2/ICH-1) is the nuclear apoptotic respondent to cellular genotoxic stress or mitotic catastrophe. The procaspase is cleaved at Asp316, producing a 14 kDa fragment and a 32 kDa prodomain/large subunit. Subsequent processing at Asp152 and Asp330 produces an 18 kDa large subunit and a 12 kDa small fragment. Activation occurs upon recruitment to a complex containing a p53-induced death domain protein, PIDD. This suggests that caspase-2 can be a nuclear initiator caspase with a requirement for caspase-9 and caspase-3 activation in downstream apoptotic events. In apoptotic pathways resulting from UV-induced DNA damage, processing of caspase-2 occurs downstream of mitochondrial dysfunction and of caspase-9 and caspase-3 activation, extending a possible role for caspase-2 as a parallel effector caspase. Caspase-3 (CPP-32, Apoptain, Yama, SCA-1) is a critical executioner of apoptosis and caspase-3 cleavage is a key indicator of initiator caspase activation. Caspase-3 is either partially or totally responsible for the proteolytic cleavage of many key proteins including the nuclear enzyme poly (ADP-ribose) polymerase (PARP). Activation of caspase-3 requires proteolytic processing of its inactive zymogen into activated p17 and p12 fragments.

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