Anti-Inhibin alpha antibody [EPY2782] (ab81322)


  • Product name
    Anti-Inhibin alpha antibody [EPY2782]
    See all Inhibin alpha primary antibodies
  • Description
    Rabbit monoclonal [EPY2782] to Inhibin alpha
  • Host species
  • Specificity
    Note: 20/23 kDa bands consist of the mature alpha chain. 50/53 kDa bands are the entire proprotein.
  • Tested applications
    Suitable for: WB, Flow Cytmore details
    Unsuitable for: IHC-P or IP
  • Species reactivity
    Reacts with: Mouse, Rat, Human
  • Immunogen

    Synthetic peptide within Human Inhibin alpha aa 1-100 (N terminal). The exact sequence is proprietary.
    Database link: P05111

  • Positive control
    • Human Adrenal gland, HeLa, Human placenta and LNCaP lysates.
  • General notes



    Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMab® patents

    This product is a recombinant rabbit monoclonal antibody.


  • Form
  • Storage instructions
    Shipped at 4°C. Store at -20°C. Stable for 12 months at -20°C.
  • Storage buffer
    pH: 7.20
    Preservative: 0.01% Sodium azide
    Constituents: 9% PBS, 40% Glycerol, 0.05% BSA, 50% Tissue culture supernatant
  • Purity
    Tissue culture supernatant
  • Clonality
  • Clone number
  • Isotype
  • Research areas


Our Abpromise guarantee covers the use of ab81322 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 1/1000 - 1/2000. Predicted molecular weight: 40 kDa.
Flow Cyt 1/300.

ab172730 - Rabbit monoclonal IgG, is suitable for use as an isotype control with this antibody.

  • Application notes
    Is unsuitable for IHC-P or IP.
  • Target

    • Function
      Inhibins and activins inhibit and activate, respectively, the secretion of follitropin by the pituitary gland. Inhibins/activins are involved in regulating a number of diverse functions such as hypothalamic and pituitary hormone secretion, gonadal hormone secretion, germ cell development and maturation, erythroid differentiation, insulin secretion, nerve cell survival, embryonic axial development or bone growth, depending on their subunit composition. Inhibins appear to oppose the functions of activins.
    • Tissue specificity
      Originally found in ovary (granulosa cells) and testis (Sertoli cells), but widely distributed in many tissues including brain and placenta. In adrenal cortex expression is limited to the zona reticularis and the innermost zona fasciculata in the normal gland, extending centripetally into the zona fasciculata in hyperplasia. Also found in adrenocortical tumors. Also expressed in prostate epithelium of benign prostatic hyperplasia, in regions of basal cell hyperplasia and in nonmalignant regions of high grade prostate cancer. Only circulating inhibin B is found in male, whereas circulating inhibins A and B are found in female.
    • Sequence similarities
      Belongs to the TGF-beta family.
    • Post-translational
      Proteolytic processing yields a number of bioactive forms. The 20/23 kDa forms consist solely of the mature alpha chain, the 26/29 kDa forms consist of the most N-terminal propeptide linked through a disulfide bond to the mature alpha chain, the 50/53 kDa forms encompass the entire proprotein. Each type can be furthermore either mono- or diglycosylated, causing the mass difference.
    • Cellular localization
    • Information by UniProt
    • Database links
    • Alternative names
      • A inhibin subunit antibody
      • A inhibin subunit precursor antibody
      • AW55578 antibody
      • IHA antibody
      • inhA antibody
      • INHA_HUMAN antibody
      • Inhibin alpha chain antibody
      • Inhibin alpha chain precursor antibody
      • Inhibin alpha subunit antibody
      see all


    • All lanes : Anti-Inhibin alpha antibody [EPY2782] (ab81322) at 1/2000 dilution

      Lane 1 : Human Adrenal gland lysate
      Lane 2 : HeLa cell lysate
      Lane 3 : Human placenta lysate
      Lane 4 : LNCaP lysate

      Lysates/proteins at 10 µg per lane.

      All lanes : HRP goat anti rabbit at 1/2000 dilution

      Predicted band size: 40 kDa
      Observed band size: 40,50 kDa (why is the actual band size different from the predicted?)
      Additional bands at: 42 kDa. We are unsure as to the identity of these extra bands.

      Note: the 50 kDa band corresponds to the entire proprotein.


    This product has been referenced in:
    • Han L  et al. Characterization of the Mechanism of Inhibin a-Subunit Gene in Mouse Anterior Pituitary Cells by RNA Interference. PLoS One 8:e74596 (2013). Mouse . Read more (PubMed: 24098340) »

    See 1 Publication for this product

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