Involved in lateral ventricle development; neuroblast division in subventricular zone; and positive regulation of neurogenesis. Acts upstream of or within adherens junction organization and nervous system development. Located in cytoplasm. Is expressed in several structures, including central nervous system; peripheral nervous system ganglion; sensory organ; testis; and thymus. Orthologous to human NUMBL (NUMB like endocytic adaptor protein). [provided by Alliance of Genome Resources, Apr 2022]