Locking loop movement in the ubiquinone pocket of complex I disengages the proton pumps

Proton pumping of mitochondrial complex I depends on the reduction of ubiquinone but the molecular mechanism of energy conversion is unclear. Here, the authors provide structural and biochemical evidence showing that movement of loop TMH1-2 in complex I subunit ND3 is required to drive proton pumpin...

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Autores principales: Alfredo Cabrera-Orefice, Etienne Galemou Yoga, Christophe Wirth, Karin Siegmund, Klaus Zwicker, Sergio Guerrero-Castillo, Volker Zickermann, Carola Hunte, Ulrich Brandt
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2018
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Acceso en línea:https://doaj.org/article/6efa54739f774befb5b738b28df7f4b2
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Sumario:Proton pumping of mitochondrial complex I depends on the reduction of ubiquinone but the molecular mechanism of energy conversion is unclear. Here, the authors provide structural and biochemical evidence showing that movement of loop TMH1-2 in complex I subunit ND3 is required to drive proton pumping.