Product nameAnti-KPNA2 antibody
See all KPNA2 primary antibodies
DescriptionRabbit polyclonal to KPNA2
Tested applicationsSuitable for: WB, ICC/IFmore details
Species reactivityReacts with: Human
Predicted to work with: Orangutan
- Recombinant Human KPNA2 protein (ab123205) can be used as a positive control in WB. 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.
Storage instructionsShipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C or -80°C. Avoid freeze / thaw cycle.
Storage bufferPreservative: 0.02% Sodium Azide
Constituents: 1% BSA, PBS, pH 7.4
Concentration information loading...
PurityImmunogen affinity purified
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.
|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
- IMA1_HUMAN antibody
- Importin alpha 1 antibody
- Importin alpha 2 antibody
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.
All lanes : 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.