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Figure 5.
Fig. 5. Heme-packing motifs. Superposition of the heme
groups of nitrite reductase (gray) and hydroxylamine
oxidoreductase (black) numbered according to their attachment to
the protein chain. With the exception of the active site heme (1
in NiR, 4 in hydroxylamine oxidoreductase), all heme groups form
di-heme elbow motifs ( circles), which are connected via a
parallel stacking arrangement similar to the one observed in
split-Soret cytochrome c (ovals). Images were produced using
Molscript (32).
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