IRS1 Rabbit Polyclonal Antibody

CAT#: TA392915

IRS-1 (phospho-S323) polyclonal antibody

Specifications

Product Data

• Applications: WB
• Recommended Dilution: WB: 1:500~1:1000 IHC: 1:50~1:200 IF: 1:50~1:200
• Reactivities: Human, Mouse, Rat
• Host: Rabbit
• Isotype: IgG
• Clonality: Polyclonal
• Immunogen: Synthetic phosphopeptide derived from human IRS-1 around the phosphorylation site of Serine 323.
• Specificity: p-IRS-1 (S323) polyclonal antibody detects endogenous levels of IRS-1 only when phosphorylated at Ser323.
• Formulation: Rabbit IgG, 1mg/ml in PBS with 0.02% sodium azide, 50% glycerol, pH7.2
• Concentration: 1mg/ml
• Conjugation: Unconjugated
• Storage: Store at 4°C short term. Aliquot and store at -20°C long term. Avoid freeze-thaw cycles.
• Stability: 1 year
• Predicted Protein Size: ~ 132, 180 kDa
• Gene Name: insulin receptor substrate 1
• Database Link:
  Entrez Gene 3667 Human
  UniProt ID P35568
• Background: 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.
• Synonyms: Insulin receptor substrate 1; IRS-1; IRS1
• Note: For research use only, not for use in diagnostic procedure.