Kinetic and spectroscopic studies on the quercetin 2,3-dioxygenase from Bacillus subtilis.


Quercetin 2,3-dioxygenase from Bacillus subtilis (QueD) converts the flavonol quercetin and molecular oxygen to 2-protocatechuoylphloroglucinolcarboxylic acid and carbon monoxide. QueD, the only known quercetin 2,3-dioxygenase from a prokaryotic organism, has been described as an Fe2+-dependent bicupin dioxygenase. Metal-substituted QueDs were generated by… (More)


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