Component of a cell-surface receptor complex that mediates cell-cell interactions between muscle precursor cells. Promotes differentiation of myogenic cells. Part of a complex that contains BOC, CDON, NEO1, cadherins and CTNNB1. Interacts with SHH, DHH and IHH. Interacts with NTN3 (By similarity). Interacts with CDH2 and CTNNB1. Interacts with CDH15 only during the early stages of myoblast differentiation. Highly expressed in embryonic somites, limb buds, dermomyotomes and in the neural tube. Up-regulated during early stages of myoblast differentiation.