Enables nuclear export signal receptor activity. Acts upstream of or within several processes, including protein export from nucleus; regulation of centrosome duplication; and regulation of protein export from nucleus. Located in nucleus. Is expressed in several structures, including alimentary system; early embryo; nervous system; respiratory system; and sensory organ. Orthologous to human XPO1 (exportin 1). [provided by Alliance of Genome Resources, Apr 2022]