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Figure 5.
FIGURE 5. Comparison of the active site of AzoR with that
of NQO1. One active site is shown for each of AzoR (a) and rat
NQO1 (b) (Protein Data Bank accession code 1QRD). The flavin
cofactors, duroquinone, and the side chains of conserved amino
acid residues in both enzymes are represented by a stick model,
with carbon atoms in gray, oxygen atoms in red, nitrogen atoms
in blue, and phosphorous atoms in orange. The polypeptide
moieties of one subunit for each enzyme are drawn as C traces
in yellow and green.
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