L-dopachrome
tautomerase
Tyrosinase
Tyrosinase
L-Dopachrome
5,6-
Dihydroxyindole-
2-carboxylic
acid
H+
CO2
5,6-
Dihydroxyindole
O2
Indole-5,6-
quinone
H2O
O2
Indole-5,6-
quinone-2-
carboxylate
H2O
Zinc
Copper
Copper
reduced
electron
acceptor
oxidized
electron
acceptor
reduced
electron
acceptor
oxidized
electron
acceptor
Melanochrome
Eumelanin
L-dopa and
L-dopachrome
biosynthesis
Melanosome
Cytosol
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