Figure 2 - full size

 

Figure 2.
Figure 2: Haem arrangement. The overall orientation corresponds to Fig. 1, with the active site located at haem 1 and the line indicating the dimer interface. Haems in the left monomer are numbered according to their attachment to the protein chain. In the right monomer, the Fe–Fe distances (å) between the haems are given. Haems 5 interact across the dimer interface with a distance closer than haems 2 and 3 within each monomer.

The above figure is reprinted by permission from Macmillan Publishers Ltd: Nature (1999, 400, 476-480) copyright 1999.