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searching for Biological pigment 4 found (20 total)

5,6-Dihydroxyindole (268 words) [view diff] exact match in snippet view article find links to article

molecular formula C8H7NO2. It is an intermediate in the production of the biological pigment eumelanin. 5,6-Dihydroxyindole is biosynthesized from L-dopachrome

1,2-Benzoquinone (477 words) [view diff] exact match in snippet view article find links to article

also a red solid, is a well behaved synthetic ortho-quinone. The biological pigment melanin is rich in ortho-quinones. Finally, the enzyme cofactors tryptophan

L-DOPA (2,973 words) [view diff] exact match in snippet view article find links to article

l-Phenylalanine, l-tyrosine, and l-DOPA are all precursors to the biological pigment melanin. The enzyme tyrosinase catalyzes the oxidation of l-DOPA to

Adaptation (eye) (5,790 words) [view diff] exact match in snippet view article

ability to see in the dark from their nocturnal ancestors. Rhodopsin, a biological pigment in the photoreceptors of the retina, immediately photobleaches in