A structural constituent of tooth enamel. Acts upstream of or within several processes, including ameloblast differentiation; amelogenesis; and positive regulation of enamel mineralization. Located in extracellular matrix. Is expressed in lower jaw molar; molar enamel organ; and upper jaw incisor. Used to study amelogenesis imperfecta type 1B. Human ortholog(s) of this gene implicated in amelogenesis imperfecta type 1B and amelogenesis imperfecta type 1C. Orthologous to human ENAM (enamelin). [provided by Alliance of Genome Resources, Apr 2022]