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. Author manuscript; available in PMC: 2014 Aug 1.
Published in final edited form as: Biochim Biophys Acta. 2013 Apr 2;1827(0):10.1016/j.bbabio.2013.03.010. doi: 10.1016/j.bbabio.2013.03.010

Fig. 7.

Fig. 7

Heme configuration of c554 shows two sets of parallel heme groups (A). The high potential heme groups (Hemes I and II) are the furthest apart, spatially (28.1 Å, Fe-Fe). The heme groups are bis-His ligated, except for Heme II. Heme II is penta-coordinate with one ligated histidine (B). (Protein Data Bank entry 1BVB.pdb).