Note that the coordinate positions of the Fe atoms are based on data available from published abstracts, information from symposium presentations, not on crystallographic data. Although the positions shown are approximately in agreement with the data, the true positions may differ significantly. The coordinates of non-Fe atoms, and orientation of rings, etc., is speculative.
The prosthetic groups are "borrowed" from PDB files, as follows:
cyt b hemes - pdb3b5c.ent
cyt c hemes - pdb2ccy.ent
ubiquinones - pdb2rcr.ent
2Fe.2S - pdb3fxc.ent
Image generated using PDVWIN software package.