ASIP (Agouti Signaling Protein): ASIP regulates melanin synthesis in the skin, influencing pigmentation and the distribution of hair color. By antagonizing melanocortin receptors, ASIP plays a critical role in determining the type of melanin produced in the hair and skin. Variations in ASIP expression are linked to differences in pigmentation patterns, susceptibility to skin cancer, and the regulation of metabolic processes, underlining its role in pigmentation and potential implications for metabolic health....