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. Author manuscript; available in PMC: 2012 Jul 1.
Published in final edited form as: Biochim Biophys Acta. 2011 Feb 23;1807(7):788–802. doi: 10.1016/j.bbabio.2011.02.006

Fig. 5.

Fig. 5

Fig. 5

Fig. 5

Fig. 5

Possible pathways for electron transfer. Intra-and inter-monomer edge-edge distances for: (A) yeast bc1 (PDB: 3CX5); (B) cyanobacterial b6f (PDB: 2E74) complex. (C, D) Center-center (Fe-Fe) connection via histidine ligands, and (C) an intra-monomerTyr184–Tyr184 bridge in yeast bc1 (PDB 3CX5), and (D) a Phe188–Phe188 bridge in the M. laminosus b6f complex.