Skip to main content
. Author manuscript; available in PMC: 2019 Jan 19.
Published in final edited form as: Chem Rev. 2018 Jun 22;118(14):6573–6655. doi: 10.1021/acs.chemrev.8b00031

Figure 153.

Figure 153.

(A) Reaction catalyzed by quercetinase (flavonol 2,4-dioxygenase).478 (B) Proposed mechanism for Ni2+-quercetinase.479 The electron needed to reduce molecular oxygen to superoxide anion may be derived from quercetin (as shown) or Ni2+.