Assertion: melanin | /r/HasProperty | formed
Facets:
value: from a benzoquinone
type: OTHER
Source sentences:
text: Melamine is, therefore, unrelated etymologically to the root melas (μελας, meaning "black" in Greek), from which the words melanin, a pigment, and melatonin, a hormone, are formed.
text: Melanin is formed from a benzoquinone obtained by the action of tyrosinase on the precursors, gamma-glutaminyl-4-hydroxybenzene (GHB, Figure 1(g)).