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Phospho-ASK1 (Ser83) Antibody #3761

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  • IP

Inquiry Info. # 3761

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    Product Specifications

    REACTIVITY H
    SENSITIVITY Transfected Only
    MW (kDa) 155
    SOURCE Rabbit
    Application Key:
    • WB-Western Blotting 
    • IP-Immunoprecipitation 
    Species Cross-Reactivity Key:
    • H-Human 

    Product Information

    Product Usage Information

    Application Dilution
    Western Blotting 1:1000
    Immunoprecipitation 1:100

    Storage

    Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA and 50% glycerol. Store at –20°C. Do not aliquot the antibody.

    Protocol

    Specificity / Sensitivity

    Phospho-ASK1 (Ser83) Antibody detects transfected ASK1 only when phosphorylated at Ser83.

    Species Reactivity:

    Human

    Source / Purification

    Polyclonal antibodies are produced by immunizing animals with a synthetic phosphopeptide corresponding to residues around Ser83 of human ASK1. Antibodies are purified by protein A and peptide affinity chromatography.

    Background

    Apoptosis signal-regulating kinase 1 (ASK1), a MAP kinase kinase kinase, plays essential roles in stress-induced apoptosis (1,2). ASK1 is activated in response to a variety of stress-related stimuli through distinct mechanisms and activates MKK4 and MKK3, which in turn activate JNK and p38 (3). Overexpression of ASK1 activates JNK and p38 and induces apoptosis in several cell types through signals involving the mitochondrial cell death pathway. Embryonic fibroblasts or primary neurons derived from ASK1-/- mice are resistant to stress-induced JNK and p38 activation as well as cell death (4,5). Phosphorylation at Ser967 is essential for ASK1 association with 14-3-3 proteins and suppression of cell death (6). Oxidative stress induces dephosphorylation of Ser967 and phosphorylation of Thr845 in the activation loop of ASK1, both of which are correlated with ASK1 activity and ASK1-dependent apoptosis (7,8). Akt phosphorylates ASK1 at Ser83, which attenuates ASK1 activity and promotes cell survival (9).
    ASK1 is a substrate for phosphorylation at Ser83 by Akt, and that this phosphorylation is associated with a decrease in stimulated ASK1 kinase activity (6).

    Alternate Names

    apoptosis signal regulating kinase 1; apoptosis signal-regulating kinase 1; ASK-1; ASK1; M3K5; MAP/ERK kinase kinase 5; MAP3K5; MAPK/ERK kinase kinase 5; MAPKKK5; MEK kinase 5; MEKK 5; MEKK5; Mitogen-activated protein kinase kinase kinase 5; Mitogen-activated protein kinase kinase kinase 5 variant

    For Research Use Only. Not for Use in Diagnostic Procedures.
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