• Western blot analysis of extracts of HepG2 cells, using IRS1 antibody (STJ11101611) at 1:500 dilution. Secondary antibody: HRP Goat Anti-Rabbit IgG (H+L) (STJS000856) at 1:10000 dilution. Lysates/proteins: 25 Mu g per lane. Blocking buffer: 3% nonfat dry milk in TBST. Detection: ECL Basic Kit. Exposure time: 3min.

Anti-IRS1 antibody (1100-1200) [S1MR] (STJ11101611)

SKU:
STJ11101611

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Host: Rabbit
Applications: WB/ELISA
Reactivity: Human
Note: STRICTLY FOR FURTHER SCIENTIFIC RESEARCH USE ONLY (RUO). MUST NOT TO BE USED IN DIAGNOSTIC OR THERAPEUTIC APPLICATIONS.
Clonality: Monoclonal
Clone ID: S1MR
Conjugation: Unconjugated
Isotype: IgG
Formulation: PBS with 0.02% Sodium Azide, 0.05% BSA, 50% Glycerol, pH 7.3.
Purification: Affinity purification
Concentration: Lot specific
Dilution Range: WB:1:500-1:2000
ELISA:Recommended starting concentration is 1 Mu g/mL. Please optimize the concentration based on your specific assay requirements.
Storage Instruction: Store at-20°C for up to 1 year from the date of receipt, and avoid repeat freeze-thaw cycles.
Gene Symbol: IRS1
Gene ID: 3667
Uniprot ID: IRS1_HUMAN
Immunogen Region: 1100-1200
Specificity: A synthetic peptide corresponding to a sequence within amino acids 1100-1200 of human IRS1 (P35568).
Immunogen Sequence: SSETFSSTPSATRVGNTVPF GAGAAVGGGGGSSSSSEDVK RHSSASFENVWLRPGELGGA PKEPAKLCGAAGGLENGLNY IDLDLVKDFKQCPQECTPEP Q
Post Translational Modifications Serine phosphorylation of IRS1 is a mechanism for insulin resistance. Ser-307, Ser-312, Ser-315, and Ser-323 phosphorylations inhibit insulin action through disruption of IRS1 interaction with the insulin receptor INSR. Phosphorylation of Tyr-896 is required for GRB2-binding. Phosphorylated by ALK. Phosphorylated at Ser-270, Ser-307, Ser-636 and Ser-1101 by RPS6KB1.phosphorylation induces accelerated degradation of IRS1. Phosphorylated on tyrosine residues in response to insulin. In skeletal muscles, dephosphorylated on Tyr-612 by TNS2 under anabolic conditions.dephosphorylation results in the proteasomal degradation of IRS1. Ubiquitinated by the Cul7-RING(FBXW8) complex in a mTOR-dependent manner, leading to its degradation: the Cul7-RING(FBXW8) complex recognizes and binds IRS1 previously phosphorylated by S6 kinase (RPS6KB1 or RPS6KB2). Ubiquitinated by TRAF4 through 'Lys-29' linkage.this ubiquitination regulates the interaction of IRS1 with IGFR and IRS1 tyrosine phosphorylation upon IGF1 stimulation. S-nitrosylation at by BLVRB inhibits its activity.
Function Signaling adapter protein that participates in the signal transduction from two prominent receptor tyrosine kinases, insulin receptor/INSR and insulin-like growth factor I receptor/IGF1R. Plays therefore an important role in development, growth, glucose homeostasis as well as lipid metabolism. Upon phosphorylation by the insulin receptor, functions as a signaling scaffold that propagates insulin action through binding to SH2 domain-containing proteins including the p85 regulatory subunit of PI3K, NCK1, NCK2, GRB2 or SHP2. Recruitment of GRB2 leads to the activation of the guanine nucleotide exchange factor SOS1 which in turn triggers the Ras/Raf/MEK/MAPK signaling cascade. Activation of the PI3K/AKT pathway is responsible for most of insulin metabolic effects in the cell, and the Ras/Raf/MEK/MAPK is involved in the regulation of gene expression and in cooperation with the PI3K pathway regulates cell growth and differentiation. Acts a positive regulator of the Wnt/beta-catenin signaling pathway through suppression of DVL2 autophagy-mediated degradation leading to cell proliferation.
Protein Name Insulin Receptor Substrate 1
Irs-1
Database Links Reactome: R-HSA-109704
Reactome: R-HSA-112399
Reactome: R-HSA-112412
Reactome: R-HSA-1257604
Reactome: R-HSA-1266695
Reactome: R-HSA-198203
Reactome: R-HSA-201556
Reactome: R-HSA-2219530
Reactome: R-HSA-2428928
Reactome: R-HSA-2586552
Reactome: R-HSA-5673001
Reactome: R-HSA-6811558
Reactome: R-HSA-74713
Reactome: R-HSA-74749
Reactome: R-HSA-9603381
Reactome: R-HSA-9725370
Reactome: R-HSA-982772
Reactome: R-HSA-9842663
Cellular Localisation Cytoplasm
Nucleus
Nuclear Or Cytoplasmic Localization Of Irs1 Correlates With The Transition From Proliferation To Chondrogenic Differentiation
Alternative Antibody Names Anti-Insulin Receptor Substrate 1 antibody
Anti-Irs-1 antibody
Anti-IRS1 antibody

Information sourced from Uniprot.org

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