Is an ortholog of human DTNB (dystrobrevin beta). Exhibits acetylcholine transmembrane transporter activity and cytoskeletal protein binding activity. Is involved in several processes, including acetylcholine transport\; cholinergic synaptic transmission\; and locomotory behavior. Localizes to the dystrobrevin complex. Is expressed in the muscular system and the nervous system. Human ortholog(s) of this gene are implicated in left ventricular noncompaction.