Predicted to enable Notch binding activity. Involved in skeletal system development. Acts upstream of or within anterior/posterior pattern specification; negative regulation of neurogenesis; and paraxial mesoderm development. Predicted to be located in membrane. Predicted to be integral component of membrane. Is expressed in several structures, including blastocyst; central nervous system; future brain; paraxial mesenchyme; and sensory organ. Used to study spondylocostal dysostosis. Human ortholog(s) of this gene implicated in dysostosis and spondylocostal dysostosis. Orthologous to human DLL3 (delta like canonical Notch ligand 3). [provided by Alliance of Genome Resources, Apr 2022]