Dopa and 5-S-cysteinyldopa in the serum of albino, black, and red guinea pigs.
Dopa and 5-S-cysteinyldopa levels in serum of albino, red, and black guinea-pigs were quantified. The levels of both amino acids were lower in the albino than in the pigmented animals. It is suggested that the serum levels of dopa and 5-S-cysteinyldopa in pigmented animals reflect tyrosine and dopa oxidation activity in the melanocytes.
D000818:Animals; D003548:Cysteinyldopa / Q000032:analysis / Q000097:blood; D004295:Dihydroxyphenylalanine / Q000032:analysis / Q000097:blood*; D006168:Guinea Pigs; D012867:Skin / Q000032:analysis; D012880:Skin Pigmentation; D013045:Species Specificity
D003548:Cysteinyldopa; D004295:Dihydroxyphenylalanine