XPO1_HUMAN

Source: PM19886704
PM23856902
Marked as 'Non-membrane protein'
Confidence: low (only semi-automatic identification from reviews) Search PubMed for
(RBC AND this entry)
Gene names: XPO1 , CRM1
Protein names and data: XPO1_HUMAN , Exportin-1; Exp1 , Chromosome region maintenance 1 protein homolog Lenght: 1071 a.a.
Mass: 123386 Da
fasta formatted sequence
Function: Mediates the nuclear export of cellular proteins (cargos) bearing a leucine-rich nuclear export signal (NES) and of RNAs. In the nucleus, in association with RANBP3, binds cooperatively to the NES on its target protein and to the GTPase RAN in its active GTP-bound form (Ran-GTP). Docking of this complex to the nuclear pore complex (NPC) is mediated through binding to nucleoporins. Upon transit of a nuclear export complex into the cytoplasm, disassembling of the complex and hydrolysis of Ran-GTP to Ran-GDP (induced by RANBP1 and RANGAP1, respectively) cause release of the cargo from the export receptor. The directionality of nuclear export is thought to be conferred by an asymmetric distribution of the GTP- and GDP-bound forms of Ran between the cytoplasm and nucleus. Involved in U3 snoRNA transport from Cajal bodies to nucleoli. Binds to late precursor U3 snoRNA bearing a TMG cap. Several viruses, among them HIV-1, HTLV-1 and influenza A use it to export their unspliced or incompletely spliced RNAs out of the nucleus. Interacts with, and mediates the nuclear export of HIV-1 Rev and HTLV-1 Rex proteins. Involved in HTLV-1 Rex multimerization.
Cellular location: Cytoplasm. Nucleus, nucleoplasm. Nucleus, Cajal body. Nucleus, nucleolus. Note=Located in the nucleoplasm, Cajal bodies and nucleoli. Shuttles between the nucleus/nucleolus and the cytoplasm.
Tissue specificity: Expressed in heart, brain, placenta, lung, liver, skeletal muscle, pancreas, spleen, thymus, prostate, testis, ovary, small intestine, colon and peripheral blood leukocytes. Not expressed in the kidney.

Database cross-references

UniProt: O14980
Ensembl: ENST00000401558
Ensembl: ENST00000404992
Ensembl: ENST00000406957
MIM: 602559
neXtProt: NX_O14980
Antibodypedia: O14980 (may not find the protein thus also not any antibody)
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