Predicted to enable identical protein binding activity. Involved in positive regulation of melanin biosynthetic process. Acts upstream of or within melanin biosynthetic process. Located in melanosome. Is expressed in several structures, including alimentary system; genitourinary system; mesenchyme derived from neural crest; nervous system; and sensory organ. Orthologous to human PMEL (premelanosome protein). [provided by Alliance of Genome Resources, Apr 2022]