Predicted to be involved in several processes, including poly(A)+ mRNA export from nucleus; regulation of histone modification; and regulation of mRNA export from nucleus. Predicted to act upstream of or within RNA splicing; mRNA processing; and mRNA transport. Predicted to be located in nucleoplasm. Predicted to be active in nucleus. Is expressed in several structures, including alimentary system; early conceptus; genitourinary system; immune system; and nervous system. Orthologous to human IWS1 (interacts with SUPT6H, CTD assembly factor 1). [provided by Alliance of Genome Resources, Apr 2022]