Enables choline transmembrane transporter activity. Involved in transmembrane transport. Acts upstream of or within choline transport. Is integral component of membrane. Is expressed in several structures, including alimentary system; brain; genitourinary system; hindlimb long bone; and thoracic segment skeleton. Human ortholog(s) of this gene implicated in high grade glioma. Orthologous to human SLC44A1 (solute carrier family 44 member 1). [provided by Alliance of Genome Resources, Apr 2022]