A ferredoxin bridge connects the two arms of plant mitochondrial complex I.
A ferredoxin bridge connects the two arms of plant mitochondrial complex I.
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DOI:
10.1093/plcell/koab092
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发表时间:
2021-07-19
期刊:
影响因子:
--
通讯作者:
Braun HP
中科院分区:
文献类型:
--
作者:
Klusch N;Senkler J;Yildiz Ö;Kühlbrandt W;Braun HP
Mitochondrial complex I is the main site for electron transfer to the respiratory chain and generates much of the proton gradient across the inner mitochondrial membrane. Complex I is composed of two arms, which form a conserved L-shape. We report the structures of the intact, 47-subunit mitochondrial complex I from Arabidopsis thaliana and the 51-subunit complex I from the green alga Polytomella sp., both at around 2.9 Å resolution. In both complexes, a heterotrimeric γ-carbonic anhydrase domain is attached to the membrane arm on the matrix side. Two states are resolved in A. thaliana complex I, with different angles between the two arms and different conformations of the ND1 (NADH dehydrogenase subunit 1) loop near the quinol binding site. The angle appears to depend on a bridge domain, which links the peripheral arm to the membrane arm and includes an unusual ferredoxin. We propose that the bridge domain participates in regulating the activity of plant complex I. An unusual ferredoxin completes a protein bridge that links the two arms of plant mitochondrial complex I and adjusts their angle in an open or closed conformation.
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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:
2.9
作者:
Cai K;Tonelli M;Frederick RO;Markley JL
通讯作者:
Markley JL
DOI:
10.1016/j.bbapap.2009.08.026
发表时间:
2010-02
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
Ferry JG
通讯作者:
Ferry JG
影响因子:
4.3
作者:
D'Imprima, Edoardo;Mills, Deryck J.;Vonck, Janet
通讯作者:
Vonck, Janet
影响因子:
16.6
作者:
Bridges HR;Fedor JG;Blaza JN;Di Luca A;Jussupow A;Jarman OD;Wright JJ;Agip AA;Gamiz-Hernandez AP;Roessler MM;Kaila VRI;Hirst J
通讯作者:
Hirst J