Figure 8.
Figure 8 Representation of the HSO b[5] (a) and CYT b[5] (b)
heme axial ligand environments. The heme is shown in all-bonds
representation, with the iron in green. The axial histidines are
in all-bonds representation, with the red dots depicting the
interactions between the Fe atom and the N 2
atoms of the axial histidines as well as the hydrogen bonds
between the carbonyl O atoms and the N 1
atoms from the axial histidines.
The above figure is reprinted
by permission from the IUCr:
Acta Crystallogr D Biol Crystallogr
(2003,
59,
1183-1191)
copyright 2003.
2
atoms of the axial histidines as well as the hydrogen bonds
between the carbonyl O atoms and the N 
1
atoms from the axial histidines.