Tbio KPNA5 Importin subunit alpha-6

Protein Summary

Description

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. Mediates nuclear import of STAT1 homodimers and STAT1/STAT2 heterodimers by recognizing non-classical NLSs of STAT1 and STAT2 through ARM repeats 8-9. Recognizes influenza A virus nucleoprotein through ARM repeat 7-9 In vitro, mediates the nuclear import of human cytomegalovirus UL84 by recognizing a non-classical NLS. 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 and is probably 120 million daltons in molecular size. Small molecules (up to 70 kD) can pass through the nuclear pore by nonselective diffusion; larger molecules are transported by an active process. Most nuclear proteins contain short basic amino acid sequences known as nuclear localization signals (NLSs). KPNA5 protein belongs to the importin alpha protein family and is thought to be involved in NLS-dependent protein import into the nucleus. [provided by RefSeq, Jul 2008]

Uniprot Accession IDs

• O15131
• B2RAI5
• Q86X23

Gene Name

• KPNA5

Ensembl ID

• ENST00000356348
• ENSP00000348704
• ENSG00000196911
• ENST00000368564
• ENSP00000357552

Symbol

• SRP6
• IPOA6

Knowledge Table

Most Knowledge About	Knowledge Value (0 to 1 scale)
protein domain	0.73
histone modification site profile	0.67
cell type or tissue	0.56
small molecule perturbation	0.54
tissue	0.5

Protein Classes

PANTHER Classes

Protein / Transfer/carrier Protein / Importin Subunit Alpha-6

DTO Classes

Protein / Transporter / Importin Subunit Alpha-6

IDG Development Level Summary

Tdark

These are targets about which virtually nothing is known. They do not have known drug or small molecule activities
- AND - satisfy two or more of the following criteria:

Pubmed score: 16.19   (req: < 5)

Gene RIFs: 6   (req: <= 3)

Antibodies: 232   (req: <= 50)

Tbio

These targets do not have known drug or small molecule activities
- AND - satisfy two or more of the following criteria:

Pubmed score: 16.19   (req: >= 5)

Gene RIFs: 6   (req: > 3)

Antibodies: 232   (req: > 50)

- OR - satisfy the following criterion:

Gene Ontology Terms: 5

Tchem

Target has at least one ChEMBL compound with an activity cutoff of < 30 nM - AND - satisfies the preceding conditions

Active Ligand: 0

Tclin

Target has at least one approved drug - AND - satisfies the preceding conditions

Active Drug: 0