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| Home > Publications database > Mechanisms of long-distance allosteric couplings in proton-binding membrane transporters |
| Journal Article | FZJ-2023-00946 |
2022
Elsevier
Heidelberg
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Please use a persistent id in citations: doi:10.1016/bs.apcsb.2021.09.002
Abstract: Membrane transporters that use proton binding and proton transfer for function couple local protonation change with changes in protein conformation and water dynamics. Changes of protein conformation might be required to allow transient formation of hydrogen-bond networks that bridge proton donor and acceptor pairs separated by long distances. Inter-helical hydrogen-bond networks adjust rapidly to protonation change, and ensure rapid response of the protein structure and dynamics. Membrane transporters with known three-dimensional structures and proton-binding groups inform on general principles of protonation-coupled protein conformational dynamics. Inter-helical hydrogen bond motifs between proton-binding carboxylate groups and a polar sidechain are observed in unrelated membrane transporters, suggesting common principles of coupling protonation change with protein conformational dynamics.
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