Predicted to enable mannosyltransferase activity. Involved in positive regulation of protein O-linked glycosylation. Predicted to be located in acrosomal vesicle; endoplasmic reticulum membrane; and sarcoplasmic reticulum. Human ortholog(s) of this gene implicated in cardiomyopathy; cleft lip; lissencephaly; and muscular dystrophy (multiple). Orthologous to human POMT1 (protein O-mannosyltransferase 1). [provided by Alliance of Genome Resources, Apr 2022]