• FormLiquid
  • Storage instructionsShipped at 4°C. Upon delivery aliquot and store at -20°C or -80°C. Avoid repeated freeze / thaw cycles.
  • Storage bufferPreservative: 0.05% Sodium azide
    Constituents: 0.1% BSA, 99% PBS
  • Concentration information loading...
  • PurityImmunogen affinity purified
  • Primary antibody notesDiffusion of metabolites and small non-nuclear molecules as well as active, mediated import of protein and export of protein and RNA through the nuclear envelope occurs through nuclear pore complexes or NPC’s. NPC’s contain up to 100 different polypeptides which have a combined mass of about 125 megadaltons. The channel available for passive transport through the NPC is about 9-10 nm in diameter while carrier mediated changes in the NPC result in a ~25 nm channel used for larger, actively transported molecules. Active transport of molecules through the NPC is a signal-mediated process that is not well understood. Proteins to be exported from the nucleus to cytoplasm contain leucine-rich nuclear export signals (NESs). NESs are recognized by transport receptors belonging to the importin-beta family of proteins. It has been shown that NES export is mediated by CRM 1 (Chromosome Region Maintenance 1), an importin-beta family member that binds NESs, Ran:GTP, and Ran binding protein (RanBP). CRM 1 mediates the nuclear exportation of numerous proteins, including histone deacetylases (HDACs), viral proteins, immunophilins, and STAT 1.
  • ClonalityPolyclonal
  • IsotypeIgG
  • Research areas

Associated products


Our Abpromise guarantee covers the use of ab3459 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
IP Use at an assay dependent concentration.
WB Use a concentration of 0.4 µg/ml. Detects a band of approximately 135 kDa (predicted molecular weight: 119 kDa).Can be blocked with Human CRM1 peptide (ab41768).
ICC 1/1000.


  • FunctionMediates the nuclear export of cellular proteins (cargos) bearing a leucine-rich nuclear export signal (NES) and of RNAs. In the nucleus, in association with RANBP3, binds cooperatively to the NES on its target protein and to the GTPase RAN in its active GTP-bound form (Ran-GTP). Docking of this complex to the nuclear pore complex (NPC) is mediated through binding to nucleoporins. Upon transit of an nuclear export complex into the cytoplasm, disassembling of the complex and hydrolysis of Ran-GTP to Ran-GDP (induced by RANBP1 and RANGAP1, respectively) cause release of the cargo from the export receptor. The directionality of nuclear export is thought to be conferred by an asymmetric distribution of the GTP- and GDP-bound forms of Ran between the cytoplasm and nucleus. Involved in U3 snoRNA transport from Cajal bodies to nucleoli. Binds to late precursor U3 snoRNA bearing a TMG cap. Several viruses, among them HIV-1, HTLV-1 and influenza A use it to export their unspliced or incompletely spliced RNAs out of the nucleus. Interacts with, and mediates the nuclear export of HIV-1 Rev and HTLV-1 Rex proteins. Involved in HTLV-1 Rex multimerization.
  • Tissue specificityExpressed in heart, brain, placenta, lung, liver, skeletal muscle, pancreas, spleen, thymus, prostate, testis, ovary, small intestine, colon and peripheral blood leukocytes. Not expressed in the kidney.
  • Sequence similaritiesBelongs to the exportin family.
    Contains 10 HEAT repeats.
    Contains 1 importin N-terminal domain.
  • Post-translational
    Phosphorylated upon DNA damage, probably by ATM or ATR.
  • Cellular localizationCytoplasm. Nucleus > nucleoplasm. Nucleus > Cajal body. Nucleus > nucleolus. Located in the nucleoplasm, Cajal bodies and nucleoli. Shuttles between the nucleus/nucleolus and the cytoplasm.
  • Information by UniProt
  • Database links
  • Alternative names
    • Chromosome region maintenance 1 protein homolog antibody
    • CRM 1 antibody
    • CRM1 homolog antibody
    • DKFZp686B1823 antibody
    • emb antibody
    • Exp 1 antibody
    • Exp1 antibody
    • Exportin 1 antibody
    • Exportin-1 antibody
    • Exportin1 antibody
    • XPO 1 antibody
    • xpo1 antibody
    • XPO1_HUMAN antibody
    see all

Anti-CRM1 antibody images

  • All lanes : Anti-CRM1 antibody (ab3459) at 1/1000 dilution

    Lane 1 : SK-BR-3 cell lysate
    Lane 2 : HeLa cell lysate
    Lane 3 : NIH-3T3 cell lysate

    Lysates/proteins at 25 µg per lane.

    HRP-conjugated anti-rabbit

    Predicted band size : 119 kDa
    Observed band size : 130 kDa (why is the actual band size different from the predicted?)

References for Anti-CRM1 antibody (ab3459)

This product has been referenced in:

See all 4 Publications for this product

Product Wall

Abcam guarantees this product to work in the species/application used in this Abreview.
Application Immunocytochemistry
Sample Human Cell (HeLa)
Specification HeLa
Fixative Paraformaldehyde
Blocking step BSA as blocking agent for 1 hour(s) and 0 minute(s) · Concentration: 2

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Submitted Sep 06 2006