Melanin is derived from which amino acid?

Melanin is synthesized from tyrosine by following pathway. Melanin is synthesized from tyrosine by following pathway It occurs in melanosomes present in melanocytes of skin and hair Uses of tyrosine: Option B: Tryptophan forms niacin (Vit B3), serotonin and melatonin. Extra Information: Albinism - Absence of pigment from skin, hair and eyes. Defect is in enzyme Tyrosinase. Patients also have vision defects and photophobia. This is also called oculo-cutaneous albinism. Vitiligo: Lack of melanoblast in some regional areas, but enzyme Tyrosinase is normal