Figure 6: Proposed mechanism for the turnover of the Qo site in QiKO.
(a) Sequence of electron-transfer reactions depending on redox state of bl: blue, reduced and red, oxidized. For simplicity, the semiquinone is depicted as being fully deprotonated. (b) Relative midpoint potential of the different redox couples. The arrows start from the redox couple, which provides the electron donor and point towards the redox couple providing the electron acceptor. The thicker the arrow, the larger the rate of the corresponding reaction.
