Associated products


Our Abpromise guarantee covers the use of ab41843 in the following tested applications.

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

  • Applications

    Blocking - Blocking peptide for Anti-XIAP antibody (ab21278)

  • Form

  • Concentration information loading...

Preparation and Storage

  • Stability and Storage

    Shipped at 4°C. Upon delivery aliquot and store at -20°C. Avoid freeze / thaw cycles.

    Preservative: 0.02% Sodium Azide
    Constituents: 0.1% BSA, PBS, pH 7.2

    This product is an active protein and may elicit a biological response in vivo, handle with caution.

General Info

  • Alternative names

    • AP 13
    • API3
    • Apoptosis Inhibitor 3
    • Baculoviral IAP repeat containing 4
    • Baculoviral IAP Repeat Containing Protein 4
    • Baculoviral IAP repeat-containing protein 4
    • BIRC 4
    • BIRC4
    • E3 ubiquitin-protein ligase XIAP
    • hIAP-3
    • hIAP3
    • HILP
    • IAP 3
    • IAP like protein
    • IAP-3
    • IAP-like protein
    • IAP3
    • ILP
    • ILP 1
    • ILP1
    • Inhibitor of apoptosis protein 3
    • Inhibitor of Apoptosis X Linked
    • Mammalian IAP Homologue A
    • MIHA
    • X linked IAP
    • X linked inhibitor of apoptosis
    • X linked inhibitor of apoptosis E3 ubiquitin protein ligase
    • X linked inhibitor of apoptosis protein
    • X-linked IAP
    • x-linked inhibitor of apopotosis proteins
    • X-linked inhibitor of apoptosis protein
    • Xiap
    • XLP2
    see all
  • Function

    Apoptotic suppressor. Has E3 ubiquitin-protein ligase activity. Mediates the proteasomal degradation of target proteins, such as caspase-3, SMAC or AIFM1. Inhibitor of caspase-3, -7 and -9. Mediates activation of MAP3K7/TAK1, leading to the activation of NF-kappa-B.
  • Tissue specificity

    Ubiquitous, except peripheral blood leukocytes.
  • Involvement in disease

    Defects in XIAP are the cause of lymphoproliferative syndrome X-linked type 2 (XLP2) [MIM:300635]. XLP is a rare immunodeficiency characterized by extreme susceptibility to infection with Epstein-Barr virus (EBV). Symptoms include severe or fatal mononucleosis, acquired hypogammaglobulinemia, pancytopenia and malignant lymphoma.
  • Sequence similarities

    Belongs to the IAP family.
    Contains 3 BIR repeats.
    Contains 1 RING-type zinc finger.
  • Domain

    The first BIR domain is involved in interaction with TAB1/MAP3K7IP1 and is important for dimerization. The second BIR domain is sufficient to inhibit caspase-3 and caspase-7, while the third BIR is involved in caspase-9 inhibition. The interactions with SMAC and PRSS25 are mediated by the second and third BIR domains.
  • Post-translational

    Ubiquitinated and degraded by the proteasome in apoptotic cells.
    Phosphorylation by PKB/AKT protects XIAP against ubiquitination and protects the protein against proteasomal degradation.
  • Cellular localization

  • Information by UniProt


ab41843 has not yet been referenced specifically in any publications.

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