Enables dopachrome isomerase activity. Involved in melanin biosynthetic process from tyrosine. Acts upstream of or within several processes, including developmental pigmentation; generation of neurons; and melanin biosynthetic process. Located in cytosol and melanosome. Is expressed in several structures, including embryo ectoderm; embryo mesenchyme; integumental system; sensory organ; and skeleton. Human ortholog(s) of this gene implicated in oculocutaneous albinism. Orthologous to human DCT (dopachrome tautomerase). [provided by Alliance of Genome Resources, Apr 2022]