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Figure 3.
Figure 3. Illustration of the two possibilities of inserting
the heme into the protein moiety assessed by high resolution
X-ray crystallography: A: electron density maps: 3F[o]-2F[c] map
contoured at 1 (blue)
and F[o]-F[c] map contoured at -2.5 (red)
and +2.5 (green),
B: the corresponding two orientations of the heme.
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