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. Author manuscript; available in PMC: 2015 Apr 9.
Published in final edited form as: Chem Rev. 2014 Mar 3;114(7):3659–3853. doi: 10.1021/cr400327t

Figure 211.

Figure 211

EPR spectra of different forms of quercetin 2,4-dioxygenase from A. japonicus. A) Resting quercetin 2,4-dioxygenase at pH 6 (solid lines represent the major, tetrahedral form and dashed lines represent the minor, 5 coordinate form). B) Resting quercetin 2,4-dioxygenase at pH 10 (only the trigonal bipyramidal form contributes). C) quercetin 2,4-dioxygenase enzyme-substrate complex with 1 eq. quercetin (2.5% DMSO). D) quercetin 2,4-dioxygenase enzyme-product complex observed after exposure of (C) to air.