Predicted to enable RNA 7-methylguanosine cap binding activity and mRNA binding activity. Predicted to be involved in several processes, including mRNA export from nucleus; mRNA metabolic process; and positive regulation of mRNA processing. Located in nucleus. Part of nuclear cap binding activity complex. Orthologous to human NCBP1 (nuclear cap binding protein subunit 1). [provided by Alliance of Genome Resources, Apr 2022]