Exportin-4 (XPO4) Antibody – Rabbit Polyclonal

Exportin-4: Mediates the nuclear export of proteins (cargos) with broad substrate specificity. In the nucleus binds cooperatively to its cargo and to the GTPase Ran in its active GTP-bound form. Docking of this trimeric 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. XPO4 then return to the nuclear compartment and mediate another round of transport. 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. Belongs to the exportin family.

Protein type: Nuclear export; Karyopherin

Chromosomal Location of Human Ortholog: 13q11

Cellular Component: nucleoplasm; cytoplasm

Molecular Function: protein binding

Biological Process: positive regulation of protein export from nucleus; protein transport