function:Acts as a cofactor for XPO1/CRM1-mediated nuclear export, perhaps as export complex scaffolding protein. Bound to XPO1/CRM1, stabilizes the XPO1/CRM1-cargo interaction. In the absence of Ran-bound GTP prevents binding of XPO1/CRM1 to the nuclear pore complex. Binds to CHC1/RCC1 and increases the guanine nucleotide exchange activity of CHC1/RCC1. Recruits XPO1/CRM1 to CHC1/RCC1 in a Ran-dependent manner.,PTM:Phosphorylated upon DNA damage, probably by ATM or ATR.,similarity:Contains 1 RanBD1 domain.,subunit:Interacts with CHC1 in a Ran-stimulated manner. Interacts with XPO1.,tissue specificity:Widely expressed with high levels in testis and heart.,
Cytoplasm . Nucleus .
Widely expressed with high levels in testis and heart.
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