Enables UDP-galactose transmembrane transporter activity. Acts upstream of or within UDP-galactose transmembrane transport. Located in Golgi membrane. Is expressed in several structures, including genitourinary system; heart; liver; lung; and spleen. Human ortholog(s) of this gene implicated in congenital disorder of glycosylation type IIm. Orthologous to human SLC35A2 (solute carrier family 35 member A2). [provided by Alliance of Genome Resources, Apr 2022]