Predicted to enable cysteine transmembrane transporter activity. Involved in negative regulation of melanin biosynthetic process and pigment metabolic process involved in pigmentation. Acts upstream of or within hair follicle development and pigmentation. Predicted to be located in late endosome; lysosome; and melanosome. Predicted to be integral component of plasma membrane. Is expressed in thymus primordium. Orthologous to human MFSD12 (major facilitator superfamily domain containing 12). [provided by Alliance of Genome Resources, Apr 2022]