Enables protein domain specific binding activity. Acts upstream of or within Notch signaling pathway; acetylcholine receptor signaling pathway; and regulation of skeletal muscle acetylcholine-gated channel clustering. Located in plasma membrane and synapse. Is expressed in several structures, including alimentary system; brain; cardiovascular system; cranium; and foot bone. Orthologous to human SORBS2 (sorbin and SH3 domain containing 2). [provided by Alliance of Genome Resources, Apr 2022]