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- W4281492321 abstract "We apply linear response theory to calculate mechanical allosteric couplings in respiratory complex I between the iron sulfur cluster N2, located in the catalytic cavity, and the membrane part of the enzyme, separated from it by more than 50 Å. According to our hypothesis, the redox reaction of ubiquinone in the catalytic cavity of the enzyme generates an unbalanced charge that via repulsion of the charged redox center N2 produces local mechanical stress that transmits into the membrane part of the enzyme where it induces proton pumping. Using coarse-grained simulations of the enzyme, we calculated mechanistic allosteric couplings that reveal the pathways of the mechanical transmission of the stress along the enzyme. The results shed light on the recent experimental studies where a stabilization of the enzyme with an introduced disulfide bridge resulted in the abolishing of proton pumping. Simulation of the disulfide bond action indicates a dramatic change of the mechanistic coupling pathways in line with experimental findings." @default.
- W4281492321 created "2022-05-26" @default.
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- W4281492321 date "2022-05-25" @default.
- W4281492321 modified "2023-09-29" @default.
- W4281492321 title "Mechanical Allosteric Couplings of Redox-Induced Conformational Changes in Respiratory Complex I" @default.
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- W4281492321 doi "https://doi.org/10.1021/acs.jpcb.2c00750" @default.
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