ArticleProceedings of the National Academy of Sciences of the United States of America2026
Quinones operate as proton-collecting antennas in energy-transducing membranes.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The bioenergetic complexes of energy-transducing membranes generate a proton current that powers the synthesis of adenosine triphosphate. Yet, since the early days of the chemiosmotic theory, it has remained elusive and much debated whether the proton motive force (PMF) delocalizes into the bulk solvent surrounding the energy-transducing membrane or if the thermodynamic force is exerted as a localized proton current along the membrane surface. To elucidate the molecular principles underlying protonation dynamics at biological membranes, we combine here proteoliposome experiments with fluorescence correlation spectroscopy and multiscale molecular simulations. We show that ubiquinone (Q
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