Dystrobrevin alpha belongs to the dystrobrevin subfamily of the dystrophin family. It is a component of the dystrophin associated protein complex (DPC), which consists of dystrophin and several integral and peripheral membrane proteins, including dystroglycans, sarcoglycans, syntrophins and alpha and beta dystrobrevin. The DPC localizes to the sarcolemma and its disruption is associated with various forms of muscular dystrophy. Dystrobrevin alpha may be involved in the formation and stability of synapses as well as being involved in the clustering of nicotinic acetylcholine receptors. Mutations in Dystrobrevin alpha are associated with left ventricular noncompaction with congenital heart defects.