Insights into the molecular mechanism of complex I from atomistic molecular dynamics simulations.
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Insights into the molecular mechanism of complex I from atomistic molecular dynamics simulations. / Sharma, Vivek; Kaila, Ville; Wikström, Mårten; Vattulainen, Ilpo Tapio; Rog, Tomasz.
European Biophysics Journal. 2015, Conference abstract.Tutkimustuotos › › vertaisarvioitu
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TY - GEN
T1 - Insights into the molecular mechanism of complex I from atomistic molecular dynamics simulations.
AU - Sharma, Vivek
AU - Kaila, Ville
AU - Wikström, Mårten
AU - Vattulainen, Ilpo Tapio
AU - Rog, Tomasz
N1 - xposter
PY - 2015
Y1 - 2015
N2 - Complex I (NADH:quinone oxidoreductase) is the first elec-tron acceptor in the respiratory chains of mitochondria andmany bacteria. It catalyzes the reduction of quinone (Q),which is coupled to the proton pumping across the mem-brane. The redox reactions in the hydrophilic domain, andproton pumping in the membrane domain of the enzyme arespatially as well as temporally separated, and how the twoare coupled remains unclear. In order to shed light on theearly reactions of the catalytic cycle of complex I, we haveperformed atomistic classical molecular dynamics (MD) sim-ulations on the entire structure of complex I fromThermusthermophilus[1], immersed in a lipid-solvent environmentcomprising ca. 1 million atoms. MD simulations (∼100 ns)in different redox and protonation states of Q show that thelong-range redox coupled proton pumping in complex I isactivated by a combination of electrostatic interactions andconformational transitions [2].
AB - Complex I (NADH:quinone oxidoreductase) is the first elec-tron acceptor in the respiratory chains of mitochondria andmany bacteria. It catalyzes the reduction of quinone (Q),which is coupled to the proton pumping across the mem-brane. The redox reactions in the hydrophilic domain, andproton pumping in the membrane domain of the enzyme arespatially as well as temporally separated, and how the twoare coupled remains unclear. In order to shed light on theearly reactions of the catalytic cycle of complex I, we haveperformed atomistic classical molecular dynamics (MD) sim-ulations on the entire structure of complex I fromThermusthermophilus[1], immersed in a lipid-solvent environmentcomprising ca. 1 million atoms. MD simulations (∼100 ns)in different redox and protonation states of Q show that thelong-range redox coupled proton pumping in complex I isactivated by a combination of electrostatic interactions andconformational transitions [2].
M3 - Other contribution
VL - 44
PB - European Biophysics Journal
ER -