Environmental Engineering Reference
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Figure 17.9 Structures of two alcohol-oxidizing enzymes. (a) Heme-containing pyrroloqui-
noline quinone (PQQ)-dependent alcohol dehydrogenase from Comamonas testosteroni
(PDB file 1KB0) with a molecule of oxidized tetrahydrofuran bound at the active site
[Oubrie et al., 2002]. (b) The environment around the flavin adenine dinucleotide (FAD) cofac-
tor of glucose oxidase from the fungus Aspergillus niger (PDB file 1CF3) [Wohlfahrt et al.,
1999]. In each case, the cofactors are shown as dark gray sticks, the protein is shown in thin
gray sticks, and a Ca atom in (a) is shown as a gray sphere.
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