Human MxA/Mx1 Antibody

  
  • Species Reactivity
    Human
  • Specificity
    Detects human MxA/Mx1 in direct ELISAs and Western blots.
  • Source
    Polyclonal Goat IgG
  • Purification
    Antigen Affinity-purified
  • Immunogen
    E. coli-derived recombinant human MxA/Mx1
    His412-Leu630
    Accession # P20591
  • Formulation
    Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
  • Label
    Unconjugated
Applications
  •  
    Recommended
    Concentration
    Sample
  • Western Blot
    1 µg/mL
    See below
  • Immunohistochemistry
    5-15 µg/mL
    See below
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Data Examples
Detection of Human MxA/Mx1 by Western Blot. Western blot shows lysates of human peripheral blood mononuclear cells (PBMC) untreated (-) or treated (+) overnight with 20 µg/mL Recombinant Human IFN‑ alpha Universal Type I (Catalog # 11200-1) and 1 µg/mL LPS. PVDF membrane was probed with 1 µg/mL of Goat Anti-Human MxA/Mx1 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF7946) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF017). A specific band was detected for MxA/Mx1 at approximately 75 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.
Immunohistochemistry
MxA/Mx1 in Human Thymus. MxA/Mx1 was detected in immersion fixed paraffin-embedded sections of human thymus using Goat Anti-Human MxA/Mx1 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF7946) at 3 µg/mL overnight at 4 °C. Before incubation with the primary antibody, tissue was subjected to heat-induced epitope retrieval using Antigen Retrieval Reagent-Basic (Catalog # CTS013). Tissue was stained using the Anti-Goat HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS008) and counterstained with hematoxylin (blue). Specific staining was localized to cytoplasm of thymocytes. View our protocol for Chromogenic IHC Staining of Paraffin-embedded Tissue Sections.
Preparation and Storage
  • Reconstitution
    Sterile PBS to a final concentration of 0.2 mg/mL.
  • Shipping
    The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
  • Stability & Storage
    Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
    • 12 months from date of receipt, -20 to -70 °C as supplied.
    • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
    • 6 months, -20 to -70 °C under sterile conditions after reconstitution.
Background: MxA/Mx1

MxA (orthoMyxovirus-resistant protein A; also IFN-induced protein p78/IFI-78K and Mx1) is a 75-78 kDa member of the Dynamin family, GTPase-binding superfamily of proteins.  It is induced by type I and III interferons, and is known to reside in the cytoplasm and associate with the membranes of the ER.  Typically, IFN-alpha is produced when influenza virus RNA (plus other viral dsDNA and RNA) is detected by internal Pattern recognition receptors (PRRs).  IFN-alpha induces the synthesis of 300+ genes, one of which is MxA (Mx1 in mouse).  In primates, MxA is cytoplasmic, and interacts with the influenza virus replication cycle at a point proximal to the transcription of genomic RNA into mRNA. By contrast, Mx1 in mouse acts in the nucleus to block primary viral gene transcription.  Functionally, MxA is a GTPase, but it is only the binding of GTP to MxA that is associated with antiviral activity.  Nucleotide binding to MxA is also associated with nonviral activity, being associated with the potentiation of TRPC Ca2+ channel activity.  Human MxA is 662 amino acids (aa) in length.  It contains one GTPase domain (aa 69-340) and a GED (GTPase Effector Domain) over aa 574-662.  There are two ultilized phosphorylation sites at Tyr129 and Tyr451.  MxA forms homo-dimers, -tetramers and -oligomers, with multimerization suggested to be important for activity.  Although IFNs are typically considered to induce Mx gene expression, HSV-1 itself also activates gene transcription.  In this case, however, a truncated 54-57 kDa transcript is generated that contains an 84 aa substitution for aa 425-662. Over aa 412-630, human MxA shares 49% aa sequence identity with mouse Mx1.   

  • Long Name:
    Interferon-regulated Resistance GTP-binding protein MxA
  • Entrez Gene IDs:
    4599 (Human); 17857 (Mouse); 24575 (Rat)
  • Alternate Names:
    human interferon-regulated resistance GTP-binding protein MXA10IFI-78Khomolog of murine (interferon-inducibleprotein p78); IFI78; IFI-78K; Mx1; MxA; myxovirus (influenza virus) resistance 1, interferon-inducible protein p78(mouse)
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