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Figure 5.
FIGURE 5. Crystal structures of the heme region. Structures
for radiation-induced Mb compound II (resolutions of 1.35, 1.30,
and 1.20 Å, respectively) at pH 5.2, 6.8, and 8.7,
radiation-induced ferric Mb (resolutions of 1.30, 1.20, and 1.40
Å, respectively) at pH 5.2, 6.8, and 8.7, and ferrous
deoxyMb (resolution of 1.25 Å) are shown with the electron
density 2F[o] - F[c] map (contoured at 1  in gold), the final
F[o] - F[c] map (contoured at +3 in green and at -3 in red),
and electron density difference F[o] - F[c] maps with the
iron-ligated oxygen atom (or water above the heme ring in
deoxyMb) omitted for map calculation (contoured at 5 in
magenta for the iron-ligated oxygen atom and at 4.5 for the
water in deoxyMb).
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