IRS1 Rabbit Polyclonal Antibody

CAT#: AP20709PU-N

IRS1 rabbit polyclonal antibody, Aff - Purified

Product Images

Immunohistochemistry analysis of human breast carcinoma tissue (Formalin-fixed, Paraffin-embedded) using IRS1 antibody (Cat.-No. AP20709PU-N).

Specifications

Product Data

• Applications: IF, IHC
• Recommended Dilution: Immunohistochemistry on paraffin sections: 1/50-1/200.
  Immunofluorescence: 1/50-1/200.
• Reactivities: Human, Mouse, Rat
• Host: Rabbit
• Clonality: Polyclonal
• Specificity: This antibody detects endogenous levels of IRS-1 protein (region surrounding Gly630).
• Formulation: Phosphate buffered saline (PBS), pH 7.2
  State: Aff - Purified
  State: Liquid purified Ig fraction
  Preservative: 0.05% Sodium azide
• Concentration: 1.0 mg/ml
• Purification: Affinity chromatography using epitope-specific immunogen (> 95% pure by SDS-PAGE).
• Storage: Store undiluted at 2-8°C for one month or (in aliquots) at -20°C for longer.
  Avoid repeated freezing and thawing.
• Stability: Shelf life: one year from despatch.
• Predicted Protein Size: ~132, 180 kDa
• Gene Name: Homo sapiens insulin receptor substrate 1 (IRS1)
• Database Link:
  Entrez Gene 16367 MouseEntrez Gene 25467 RatEntrez Gene 3667 Human
• Background: The insulin receptor substrate-1 (IRS-1), a major substrate of the insulin receptor, is phosphorylated in response to stimulation of cells by insulin, insulin-like growth factor 1 (IGF-1) and interleukin 4 (IL-4). IRS-1 is phosphorylated on serine, threonine and tyrosine residues in a variety of tissues. An insulin-sensitive serine/threonine kinase casein kinase II mediates a portion of the insulin-stimulated serine/threonine phosphorylation of overexpressed IRS-1 in vivo. Thr 502 is identified as the major casein kinase II-catalyzed phosphorylation site in rat IRS-1, and Ser 99 is an additional phosphorylation site catalyzed by casein kinase II. Thus, casein kinase II-catalyzed phosphorylation of IRS-1 may be a component of the intracellular insulin signaling cascade. IRS-1 contains three putative binding sites for 14-3-3 (Ser 270, Ser 374 and Ser 641) and the motif around Ser 270 is located in the phosphortyrosine binding domain of IRS-1, which is responsible for the interaction with the insulin receptor. The association of 14-3-3 with IRS-1 increases significantly upon treatment with okadaic acid, a potent serine/ threonine phosphatase inhibitor. Therefore, the association of 14-3-3 protein may play a role in the regulation of insulin sensitivity by interrupting the association between the insulin receptor and IRS-1.
• Synonyms: Insulin receptor substrate 1, IRS-1

Reference Data

• Protein Families: Druggable Genome
• Protein Pathways: Adipocytokine signaling pathway, Insulin signaling pathway, Neurotrophin signaling pathway, Type II diabetes mellitus