SLC45A2 (Solute Carrier Family 45 Member 2): SLC45A2 is a protein involved in melanin production, functioning as a transporter of tyrosine, a key precursor in the melanin biosynthesis pathway. Variants of SLC45A2 contribute to differences in human pigmentation, affecting skin, hair, and eye color. Mutations in this gene can lead to oculocutaneous albinism type 4, characterized by reduced pigmentation and visual impairments. The role of SLC45A2 in pigmentation influences not only physical appearance but also protection against UV radiation and the regulation of vitamin D synthesis.