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. Author manuscript; available in PMC: 2008 Mar 1.

Published in final edited form as: Biochim Biophys Acta. 2007 Jan 30;1767(3):244–260. doi: 10.1016/j.bbabio.2007.01.015

Fig 4 — Showing the energy diagram for some of the key states that may be involved in the overall CcO pumping mechanism. The notation H_D and H^‡ refers to having the proton on the least energy favorable water molecule in the D-channel and hydrophobic region, i.e. (H₂O)₆ and (H₂O)₁₀. Note also that the preexponential effect is included in the ET barriers. The figure considers two limiting case; (a) with ε_eff =13 for all the interactions with the protonated water molecules and the ε_eff of Eq 7 with ε′=60 for all other interactions, and (b) the ε_eff of Eq. 7 with ε′=60 for all interactions.

Fig 4 — Showing the energy diagram for some of the key states that may be involved in the overall CcO pumping mechanism. The notation H_D and H^‡ refers to having the proton on the least energy favorable water molecule in the D-channel and hydrophobic region, i.e. (H₂O)₆ and (H₂O)₁₀. Note also that the preexponential effect is included in the ET barriers. The figure considers two limiting case; (a) with ε_eff =13 for all the interactions with the protonated water molecules and the ε_eff of Eq 7 with ε′=60 for all other interactions, and (b) the ε_eff of Eq. 7 with ε′=60 for all interactions.