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You are here:Home » Antibodies » Abs to Protein Kinase Substrates » Anti -IRS1, phosphorylated (Ser318) (Insulin Receptor Substrate 1, IRS-1)

Anti -IRS1, phosphorylated (Ser318) (Insulin Receptor Substrate 1, IRS-1)

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Specifications

Clone Host Grade Applications
Monoclonal Rabbit Supernatant B IP
Insulin receptor substrate 1 (IRS-1) is one of the major substrates of the insulin receptor kinase (1). IRS-1 contains multiple tyrosine phosphorylation motifs that serve as docking sites for SH2 domain containing proteins that mediate the metabolic and growth promoting functions of insulin (2-4). IRS-1 also contains over 30 potential serine/threonine phosphorylation sites. Ser307 of IRS-1 is phosphorylated by JNK (5) and IKK (6) while Ser789 is phosphorylated by SIK-2, a member of the AMPK family (7). The PKC and mTOR pathways mediate phosphorylation of IRS-1 at Ser612 and Ser636/639, respectively (8,9). Phosphorylation of IRS-1 at Ser1101 is mediated by PKCtheta and results in an inhibition of insulin signaling in the cell, suggesting a potential mechanism for insulin resistance in some models of obesity (10). PKC phosphorylates mouse IRS-1 at Ser318 (human Ser323) by insulin receptor activation or by other stimulation such as TPA, IL-6, retinoic acid treatment (11-14). The phosphorylation at Ser318 acts as a negative feedback signal to down regulates of insulin effect (14-16).
Catalog #I8700-05Z
ApplicationsSuitable for use in Western Blot and Immunoprecipitation. Other applications not tested.
Recommended DilutionWestern Blot: 1:1000
Immunoprecipitation: 1:50
Optimal dilutions to be determined by the researcher.
Storage and StabilityMay be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Aliquots are stable for at least 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
Clone TypeMonoclonal
IsotypeIgG
Clone NoD51C3
HostRabbit
SourceMouse
ConcentrationNot determined
FormSupplied as a liquid in 10mM sodium HEPES, pH 7.5, 150mM sodium chloride, 100ug/ml BSA, <0.02% sodium azide, 50% glycerol.
PuritySupernatant
ImmunogenSynthetic phosphopeptide corresponding to residues surrounding Ser318 of mouse IRS-1.
SpecificityRecognizes endogenous levels of mouse IRS-1, phosphorylated at Ser318. Species Crossreactivity: Human and rat.
Important NoteThis product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.


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