• Product name

    Anti-IRS1 (phospho S307) antibody
    See all IRS1 primary antibodies
  • Description

    Rabbit polyclonal to IRS1 (phospho S307)
  • Host species

  • Specificity

    Recognises a 180kDa band in 293 cells stimulated with anisomysin after serum starvation.
  • Tested applications

    Suitable for: WBmore details
  • Species reactivity

    Reacts with: Human
    Predicted to work with: Mouse, Rat, Pig
  • Immunogen

    Synthetic phospho peptide: GLTRRSRTESpITATSPASM conjugated to KLH, corresponding to amino acids 298-316 of Human IRS 1.



Our Abpromise guarantee covers the use of ab1194 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
WB 1/250. Detects a band of approximately 180 kDa (predicted molecular weight: 131 kDa).


  • Function

    May mediate the control of various cellular processes by insulin. When phosphorylated by the insulin receptor binds specifically to various cellular proteins containing SH2 domains such as phosphatidylinositol 3-kinase p85 subunit or GRB2. Activates phosphatidylinositol 3-kinase when bound to the regulatory p85 subunit.
  • Involvement in disease

    Polymorphisms in IRS1 may be involved in the etiology of non-insulin-dependent diabetes mellitus (NIDDM) [MIM:125853].
  • Sequence similarities

    Contains 1 IRS-type PTB domain.
    Contains 1 PH domain.
  • Post-translational

    Serine phosphorylation of IRS1 is a mechanism for insulin resistance. Ser-312 phosphorylation inhibits insulin action through disruption of IRS1 interaction with the insulin receptor.
    Phosphorylation of Tyr-896 is required for GRB2-binding.
  • Information by UniProt
  • Database links

  • Alternative names

    • HIRS 1 antibody
    • HIRS1 antibody
    • Insulin receptor substrate 1 antibody
    • IRS 1 antibody
    • IRS-1 antibody
    • IRS1 antibody
    • IRS1_HUMAN antibody
    • OTTHUMP00000164234 antibody
    see all


  • All lanes : Anti-IRS1 (phospho S307) antibody (ab1194) at 1/250 dilution

    Lane 1 : 293 cell lysate
    Lane 2 : 293 cell lysate prepared from cells serum-starved for 18 h followed by treatment with 5 ug/ml of anisomysin for 30 min.

    Lysates/proteins at 25 µg per lane.

    All lanes : IRDye800 Goat anti-Rabbit IgG [H&L] at 1/10000 dilution

    Performed under reducing conditions.

    Predicted band size: 131 kDa
    Observed band size: 180 kDa
    why is the actual band size different from the predicted?
    Additional bands at: 70 kDa. We are unsure as to the identity of these extra bands.

    The 180kDa band is believed to correspond to phospho S307 IRS1. Blocking with the immunising peptide removes the 180kDa band (data not shown). A 4-20% Tris-Glycine gel was used, with blocking with 5% goat serum and 0.5% BLOTTO in PBS.


This product has been referenced in:

  • Tian H  et al. Effect of Dexmedetomidine-Mediated Insulin-Like Growth Factor 2 (IGF2) Signal Pathway on Immune Function and Invasion and Migration of Cancer Cells in Rats with Ovarian Cancer. Med Sci Monit 25:4655-4664 (2019). Read more (PubMed: 31230061) »
  • Prabakaran AD  et al. Identification of early indicators of altered metabolism in normal development using a rodent model system. Dis Model Mech 11:N/A (2018). Read more (PubMed: 29434026) »
See all 5 Publications for this product

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