Rabbit anti-Human KPNA1 Polyclonal Antibody

Uniprot Id

P52294

Target Species

Human

Target Name

KPNA1

Target Full Name

Importin subunit alpha-5

Target Function

Functions 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. In vitro, mediates the nuclear import of human cytomegalovirus UL84 by recognizing a non-classical NLS.

Target Subcellular Location

Cytoplasm. Nucleus.

Target Protein Families

Importin alpha family

Target Tissue Specificity

Expressed ubiquitously.

Target Synonyms

IMA5_HUMAN; Importin alpha 1 subunit; Importin alpha 5; Importin alpha S1; Importin subunit alpha-5; N-terminally processed; IPO A5; IPOA 5; IPOA5; Karyopherin alpha 1; Karyopherin alpha 1 subunit; Karyopherin subunit alpha-1; KPNA 1; KPNA1; mSRP 1; mSRP1; NPI 1; NPI-1; NPI1; Nucleoprotein interactor 1; RAG cohort protein 2; RCH 2; RCH2; Recombination activating gene cohort 2; SRP 1; SRP1 beta; SRP1-beta

Target Background

The transport of molecules between the nucleus and the cytoplasm in eukaryotic cells is mediated by the nuclear pore complex (NPC), which consists of 60-100 proteins. Small molecules (up to 70 kD) can pass through the nuclear pore by nonselective diffusion while larger molecules are transported by an active process. The protein encoded by this gene belongs to the importin alpha family, and is involved in nuclear protein import. This protein interacts with the recombination activating gene 1 (RAG1) protein and is a putative substrate of the RAG1 ubiquitin ligase. Alternative splicing results in multiple transcript variants.