Product nameAnti-KPNA2 antibody
See all KPNA2 primary antibodies
DescriptionRabbit polyclonal to KPNA2
Tested applicationsSuitable for: ICC/IF, WB, IP, IHC-Pmore details
Species reactivityReacts with: Mouse, Human
Predicted to work with: Chimpanzee, Orangutan
A region between residue 475 and the C-terminus (residue 529) of human KPNA2 (NP_002257.1).
- HeLa whole cell lysate (ab150035). 293T whole cell lysate.
Storage instructionsShipped at 4°C. Upon delivery aliquot and store at -20°C. Avoid freeze / thaw cycles.
Storage bufferPreservative: 0.09% Sodium azide
Constituents: 1.815% Tris, 1.764% Sodium citrate, 0.021% PBS
Concentration information loading...
PurityImmunogen affinity purified
Our Abpromise guarantee covers the use of ab70160 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
|ICC/IF||Use a concentration of 1 µg/ml.|
|WB||1/10000 - 1/25000. Detects a band of approximately 58 kDa (predicted molecular weight: 58 kDa).|
|IP||Use at 2-10 µg/mg of lysate.|
|IHC-P||1/1000 - 1/5000. Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.|
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 (ab70160) at 0.04 µg/ml
Lane 1 : HeLa whole cell lysate at 50 µg
Lane 2 : HeLa whole cell lysate at 15 µg
Lane 3 : HeLa whole cell lysate at 5 µg
Lane 4 : 293T whole cell lysate at 50 µg
Lane 5 : Mouse NIH3T3 whole cell lysate at 50 µg
Predicted band size: 58 kDa
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) analysis of human colon carcinoma tissue labelling KPNA2 with ab70160 at 1/1000 (1µg/ml; left and right) and 1/5000 (0.2µg/ml; middle). Detection: DAB.
ICC/IF image of ab70160 stained HeLa cells. The cells were 4% formaldehyde (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 (ab70160, 1µg/ml) overnight at +4°C. The secondary antibody (green) was ab96899 Dylight 488 goat anti-rabbit IgG (H+L) used at a 1/250 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.
This product has been referenced in:
- Pallett MA et al. Vaccinia Virus BBK E3 Ligase Adaptor A55 Targets Importin-Dependent NF-?B Activation and Inhibits CD8+ T-Cell Memory. J Virol 93:N/A (2019). Read more (PubMed: 30814284) »
- Lee KH et al. C9orf72 Dipeptide Repeats Impair the Assembly, Dynamics, and Function of Membrane-Less Organelles. Cell 167:774-788.e17 (2016). Read more (PubMed: 27768896) »