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Figure 4.
Fig. 4. Stereoview of the region surrounding heme II in
all three redox forms. The reduced form is blue; the oxidized
form at pH 7.6 is yellow; the oxidized form at pH 4.0 is red.
Propionate D of heme 2 and the side chains of Glu-61, Lys-75,
and His-76 are represented, and the differences observed between
both redox forms are discussed in the text.
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