Predicted to enable RNA binding activity. Predicted to be involved in RNA splicing; nuclear-transcribed mRNA catabolic process, nonsense-mediated decay; and regulation of alternative mRNA splicing, via spliceosome. Predicted to act upstream of or within mRNA processing; mRNA transport; and regulation of translation. Predicted to be located in nucleus. Predicted to be part of catalytic step 2 spliceosome and exon-exon junction complex. Is expressed in intestine; liver; spleen; and testis. Orthologous to human MAGOH (mago homolog, exon junction complex subunit). [provided by Alliance of Genome Resources, Apr 2022]