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. Author manuscript; available in PMC: 2015 Jan 21.
Published in final edited form as: Chem Soc Rev. 2014 Jan 21;43(2):676–706. doi: 10.1039/c3cs60249d

Fig. 7.

Fig. 7

Left: the structure of Rhodobacter sphaeroides NapAB (1OGY) highlighting the metal cofactors along with important amino acid residues. Right: a close up of the metal cofactors and select amino acid residues with distance suggesting a potential electron and or proton transfer path.