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Figure 3.
Figure 3. Heme configuration and superposition of heme stacking
motifs. a, Inter-heme iron distances and overall heme
configuration. Hemes are shown in the same view as in Fig. 2a.
b, Overlay of hemes I and III from cyt c554 (red) with hemes 1
and 2 from HAO (teal), hemes 3 and 5 from HAO (magenta), hemes 6
and 7 from HAO (green) and hemes 1 and 2 from the split Soret
cytochrome (yellow). The pseudo two-fold axis has been
calculated for the hemes of cyt c554 and is shown as a black
line. c, Overlay of hemes II and IV from cyt c554 (red) with
P460 and 6 of HAO (teal). The 5-coordinate hemes II (cyt c554)
and P460 (HAO) are on the right. The pseudo two-fold axis
calculated for hemes II and IV of cyt c554 is indicated as a
black line. d, Overlay of the two central hemes, hemes III and
IV, from cyt c554 with hemes 5 and 6 from HAO (teal), hemes 7
and 8 from HAO (green), hemes 69 and 70 from cyt c551.5
(magenta) and hemes 201 and 203 from cyt c[3] (yellow). e,
Stereoview of the overlay of all hemes and surrounding
structural elements from cyt c554 (red) with hemes 3−6 of HAO
(teal).
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