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Figure 2.
Figure 2. Stereo view of a ball- and -stick model of the heme
and some residues with Im-omitted F[o]–F[c] map. The map is
shown in green and contoured at 5σ. The heme exists in a
six-coordinate form with His82 and Im ligands. Im is located in
the hydrophobic pocket formed by the C-helix and the N-terminal
region (from M5 to L7). The N-terminal amino group (N) of
Im-bound Ch-CooA is located 16 Å from the heme iron.
Carbon, nitrogen, oxygen and sulfur atoms are shown in grey,
blue, red and yellow, respectively.
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