• Product nameAnti-KPNA2 antibody
    See all KPNA2 primary antibodies
  • Description
    Rabbit polyclonal to KPNA2
  • Tested applicationsSuitable for: WB, ICC/IFmore details
  • Species reactivity
    Reacts with: Human
    Predicted to work with: Orangutan
  • Immunogen

    Synthetic peptide conjugated to KLH derived from within residues 450 to the C-terminus of Human KPNA2.

    (Peptide available as ab109889.)

  • Positive control
    • This antibody gave a positive signal in the following Human lysates: HeLa Whole Cell; Jurkat Whole Cell; HepG2 Whole Cell; HEK293 Whole Cell; MOLT4 Whole Cell; HeLa Nuclear; HepG2 Nuclear.


Associated products


Our Abpromise guarantee covers the use of ab99288 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 Use a concentration of 1 µg/ml. Detects a band of approximately 58 kDa (predicted molecular weight: 58 kDa).
ICC/IF Use a concentration of 5 µg/ml.


  • FunctionFunctions in nuclear protein import as an adapter protein for nuclear receptor KPNB1. Binds specifically and directly to substrates containing either a simple or bipartite NLS motif. Docking of the importin/substrate complex to the nuclear pore complex (NPC) is mediated by KPNB1 through binding to nucleoporin FxFG repeats and the complex is subsequently translocated through the pore by an energy requiring, Ran-dependent mechanism. At the nucleoplasmic side of the NPC, Ran binds to importin-beta and the three components separate and importin-alpha and -beta are re-exported from the nucleus to the cytoplasm where GTP hydrolysis releases Ran from importin. The directionality of nuclear import is thought to be conferred by an asymmetric distribution of the GTP- and GDP-bound forms of Ran between the cytoplasm and nucleus.
  • Tissue specificityExpressed ubiquitously.
  • Sequence similaritiesBelongs to the importin alpha family.
    Contains 10 ARM repeats.
    Contains 1 IBB domain.
  • DomainConsists of an N-terminal hydrophilic region, a hydrophobic central region composed of 10 repeats, and a short hydrophilic C-terminus. The N-terminal hydrophilic region contains the importin beta binding domain (IBB domain), which is sufficient for binding importin beta and essential for nuclear protein import.
    The IBB domain is thought to act as an intrasteric autoregulatory sequence by interacting with the internal autoinhibitory NLS. Binding of KPNB1 probably overlaps the internal NLS and contributes to a high affinity for cytoplasmic NLS-containing cargo substrates. After dissociation of the importin/substrate complex in the nucleus the internal autohibitory NLS contributes to a low affinity for nuclear NLS-containing proteins.
    The major and minor NLS binding sites are mainly involved in recognition of simple or bipartite NLS motifs. Structurally located within in a helical surface groove they contain several conserved Trp and Asn residues of the corresponding third helices (H3) of ARM repeats which mainly contribute to binding.
  • Cellular localizationCytoplasm. Nucleus.
  • Information by UniProt
  • Database links
  • Alternative names
    • IMA1_HUMAN antibody
    • Importin alpha 1 antibody
    • Importin alpha 2 antibody
    • Importin alpha 2 subunit antibody
    • Importin alpha P1 antibody
    • Importin subunit alpha-1 antibody
    • IPO A1 antibody
    • IPOA 1 antibody
    • IPOA1 antibody
    • Karyopherin alpha 2 antibody
    • Karyopherin alpha 2 RAG cohort 1 antibody
    • Karyopherin alpha 2 subunit antibody
    • Karyopherin subunit alpha-2 antibody
    • KPNA2 antibody
    • KPNA2 protein antibody
    • Pendulin antibody
    • QIP 2 antibody
    • QIP2 antibody
    • RAG cohort 1 antibody
    • RAG cohort protein 1 antibody
    • RCH 1 antibody
    • RCH1 antibody
    • SRP 1 antibody
    • SRP1 alpha antibody
    • SRP1 antibody
    • SRP1-alpha antibody
    • SRP1alpha antibody
    see all

Anti-KPNA2 antibody images

  • All lanes : Anti-KPNA2 antibody (ab99288) at 1 µg/ml

    Lane 1 : HeLa (Human epithelial carcinoma cell line) Whole Cell Lysate
    Lane 2 : Jurkat (Human T cell lymphoblast-like cell line) Whole Cell Lysate
    Lane 3 : HepG2 (Human hepatocellular liver carcinoma cell line) Whole Cell Lysate
    Lane 4 : HEK293 (Human embryonic kidney cell line) Whole Cell Lysate
    Lane 5 : MOLT4 (Human acute lymphoblastic leukemia cell line) Whole Cell Lysate
    Lane 6 : HeLa (Human epithelial carcinoma cell line) Nuclear Lysate
    Lane 7 : HepG2 (Human hepatocellular liver carcinoma cell line) Nuclear Lysate

    Lysates/proteins at 10 µg per lane.

    Goat Anti-Rabbit IgG H&L (HRP) preadsorbed (ab97080) at 1/5000 dilution
    developed using the ECL technique

    Performed under reducing conditions.

    Predicted band size : 58 kDa
    Observed band size : 58 kDa
    Additional bands at : 25 kDa,55 kDa. We are unsure as to the identity of these extra bands.

    Exposure time : 30 seconds
  • ICC/IF image of ab99288 stained HepG2 cells. The cells were 4% formaldehyde fixed (10 min) and then incubated in 1%BSA / 10% normal goat serum / 0.3M glycine in 0.1% PBS-Tween for 1h to permeabilise the cells and block non-specific protein-protein interactions. The cells were then incubated with the antibody ab99288 at 5µg/ml overnight at +4°C. The secondary antibody (green) was DyLight® 488 goat anti- rabbit (ab96899) IgG (H+L) used at a 1/1000 dilution for 1h. Alexa Fluor® 594 WGA was used to label plasma membranes (red) at a 1/200 dilution for 1h. DAPI was used to stain the cell nuclei (blue) at a concentration of 1.43µM.

References for Anti-KPNA2 antibody (ab99288)

This product has been referenced in:
  • Gao R  et al. Targeting of DNA Damage Signaling Pathway Induced Senescence and Reduced Migration of Cancer cells. J Gerontol A Biol Sci Med Sci N/A:N/A (2014). Read more (PubMed: 24747666) »

See 1 Publication for this product

Product Wall

Thank you for your recent phone call. My colleague is out of office for a couple of weeks and he has asked me to look after his customers in his absence. Based on the blast search of the immunogen against human and ab99288 seems to be specific t...

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