Assertion: cysteine | /r/HasProperty | = 2:1 or 5:1 mol/mol
Facets:
Source sentences:
text: Excess p-benzoquinone conditions (p-benzoquinone: cysteine = 2:1 or 5:1 mol/mol) led to a dramatic decrease in the yield of firefly luciferin, suggesting that the molar ratio of p-benzoquinone to cysteine was a critical processing parameter for the formation of firefly luciferin.