Enables laminin-1 binding activity. Acts upstream of or within neuron remodeling and regulation of branching involved in salivary gland morphogenesis by extracellular matrix-epithelial cell signaling. Located in basement membrane. Is expressed in several structures, including alimentary system; cardiovascular system; connective tissue; nervous system; and urinary system. Orthologous to human NTN4 (netrin 4). [provided by Alliance of Genome Resources, Apr 2022]