Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10795816 | Biochimica et Biophysica Acta (BBA) - Bioenergetics | 2013 | 22 Pages |
Abstract
⺠In mutants at the -PEWY- glutamate, the second electron transfer becomes limiting. ⺠With kcat ~ 103 sâ 1, electron transfer from the distal domain is kinetically incompetent. ⺠Bifurcated rate at the Qo-site is pH independent below 8, and increases with pK ~ 8.5. ⺠There is no marked pH-dependence of ES formation over the range < 8 in mutants. ⺠E295 catalyzes H+ exit and likely acts as a gate for semiquinone migration in the site.
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Authors
Doreen Victoria, Rodney Burton, Antony R. Crofts,