Structure of an Ancient Respiratory System.
Structure of an Ancient Respiratory System.
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DOI:
10.1016/j.cell.2018.03.071
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发表时间:
2018-06-14
期刊:
影响因子:
64.5
通讯作者:
Li H
中科院分区:
文献类型:
--
作者:
Yu H;Wu CH;Schut GJ;Haja DK;Zhao G;Peters JW;Adams MWW;Li H
Hydrogen gas-evolving membrane-bound hydrogenase (MBH) and quinone-reducing Complex I are homologous respiratory complexes with a common ancestor but a structural basis for their evolutionary relationship is lacking. Herein we report the cryo-EM structure of a 14-subunit MBH from the hyperthermophilie Pyrococcus furiosus. MBH contains a membrane-anchored hydrogenase module that is highly similar structurally to the quinone-binding Q-module of Complex I while its membrane-embedded ion-translocation module can be divided into a H+- and a Na+-translocating unit. The H+-translocating unit is rotated 180° in-membrane with respect to its counterpart in Complex I, leading to distinctive architectures for the two respiratory systems despite their largely conserved proton-pumping mechanisms. The Na+-translocating unit, absent in Complex I, resembles that found in the Mrp H+/Na+ antiporter and enables hydrogen gas evolution by MBH to establish a Na+ gradient for ATP synthesis near 100 °C. MBH also provides insights into Mrp structure and evolution of MBH-based respiratory enzymes. The structure of a respiratory complex from a hyperthermophilic archaeon offers insights into the evolution of mitochondrial Complex I
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影响因子:
48
作者:
Kucukelbir, Alp;Sigworth, Fred J.;Tagare, Hemant D.
通讯作者:
Tagare, Hemant D.
影响因子:
64.8
作者:
Fiedorczuk, Karol;Letts, James A.;Degliesposti, Gianluca;Kaszuba, Karol;Skehel, Mark;Sazanov, Leonid A.
通讯作者:
Sazanov, Leonid A.
影响因子:
64.8
作者:
通讯作者:
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影响因子:
64.8
作者:
Efremov, Rouslan G.;Sazanov, Leonid A.
通讯作者:
Sazanov, Leonid A.
DOI:
10.1107/s0907444909052925
发表时间:
2010-02
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者:
Zwart PH