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Phospho-GRB2 (Tyr160) (F3B5U) Rabbit mAb #70904

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  • WB

    Product Specifications

    REACTIVITY H M
    SENSITIVITY Endogenous
    MW (kDa) 25
    Source/Isotype Rabbit IgG
    Application Key:
    • WB-Western Blotting 
    Species Cross-Reactivity Key:
    • H-Human 
    • M-Mouse 

    Product Information

    Product Usage Information

    Application Dilution
    Western Blotting 1:1000

    Storage

    Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/mL BSA, 50% glycerol, and less than 0.02% sodium azide. Store at –20°C. Do not aliquot the antibody.

    Protocol

    Specificity / Sensitivity

    Phospho-GRB2 (Tyr160) (F3B5U) Rabbit mAb recognizes endogenous levels of GRB2 protein only when phosphorylated at Tyr160. This antibody may cross-reacts with other highly tyrosine phosphorylated proteins, including the HER family proteins. This antibody detects 70 kDa and 90 kDa proteins of unknown identity in some cell lines.

    Species Reactivity:

    Human, Mouse

    Source / Purification

    Monoclonal antibody is produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Tyr160 of human GRB2 protein.

    Background

    Growth factor receptor-binding protein 2 (GRB2) is an adaptor protein that is involved in RTK signal transduction. The SH2 domain of GRB2 binds to tyrosine phosphorylated proteins, such as EGFR, IRS-1, Shc and Gab1 (1). The SH3 domain of GRB2 associates with SOS, which stimulates the Ras GTP-binding activity, leading to the activation of the MAP kinase and other signaling pathways. Phosphorylation of GRB2 at Tyr209 by Bcr-Abl and EGFR abolishes its association with SOS and negatively regulates downstream signaling (2).

    GRB2 is phosphorylated at Tyr160 by NPM-ALK kinase and Src kinase (3,4). The phosphorylation promotes its disassociation from dimer to monomer, stabilizes its association with SOS, and activates the downstream MAP kinase signaling (5).
    For Research Use Only. Not for Use in Diagnostic Procedures.
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