Enables choline transmembrane transporter activity. Involved in acetylcholine biosynthetic process. Located in several cellular components, including cytoplasmic vesicle; perikaryon; and plasma membrane raft. Biomarker of asthma. Human ortholog(s) of this gene implicated in congenital myasthenic syndrome 20 and distal hereditary motor neuronopathy type 7A. Orthologous to human SLC5A7 (solute carrier family 5 member 7). [provided by Alliance of Genome Resources, Apr 2022]