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. Author manuscript; available in PMC: 2016 Jan 1.
Published in final edited form as: Biochim Biophys Acta. 2014 Sep 28;1847(1):98–108. doi: 10.1016/j.bbabio.2014.09.008

Fig. 6.

Fig. 6

Mechanistic model for proton translocation in bCcO [5]. The gray rectangular box indicates the heme a, with the farnesyl sidechain, formyl and propionate A groups attached to it. The OH group of the farnesyl sidechain in the “open” and “closed” conformations (see text) is highlighted in yellow and pink, respectively.