Enables BMP receptor binding activity; cadherin binding activity; and signaling receptor activity. Acts upstream of or within several processes, including myoblast fusion; negative regulation of axon regeneration; and positive regulation of BMP signaling pathway. Located in cell surface; intracellular vesicle; and membrane. Is expressed in several structures, including alimentary system; genitourinary system; limb; nervous system; and sensory organ. Orthologous to human NEO1 (neogenin 1). [provided by Alliance of Genome Resources, Apr 2022]