Structure and functional dynamics of the mitochondrial Fe/S cluster synthesis complex.
Structure and functional dynamics of the mitochondrial Fe/S cluster synthesis complex.
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DOI:
10.1038/s41467-017-01497-1
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发表时间:
2017-11-03
影响因子:
16.6
通讯作者:
Cygler M
中科院分区:
文献类型:
--
作者:
Boniecki MT;Freibert SA;Mühlenhoff U;Lill R;Cygler M
Iron–sulfur (Fe/S) clusters are essential protein cofactors crucial for many cellular functions including DNA maintenance, protein translation, and energy conversion. De novo Fe/S cluster synthesis occurs on the mitochondrial scaffold protein ISCU and requires cysteine desulfurase NFS1, ferredoxin, frataxin, and the small factors ISD11 and ACP (acyl carrier protein). Both the mechanism of Fe/S cluster synthesis and function of ISD11-ACP are poorly understood. Here, we present crystal structures of three different NFS1-ISD11-ACP complexes with and without ISCU, and we use SAXS analyses to define the 3D architecture of the complete mitochondrial Fe/S cluster biosynthetic complex. Our structural and biochemical studies provide mechanistic insights into Fe/S cluster synthesis at the catalytic center defined by the active-site Cys of NFS1 and conserved Cys, Asp, and His residues of ISCU. We assign specific regulatory rather than catalytic roles to ISD11-ACP that link Fe/S cluster synthesis with mitochondrial lipid synthesis and cellular energy status. Fe/S clusters are synthesized by the mitochondrial iron-sulfur cluster assembly (ISC) machinery. Here the authors combine crystallography and small angle X-ray scattering measurements to structurally characterize the core ISC complex and give functional insights into eukaryotic Fe/S cluster synthesis.
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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.
DOI:
10.1073/pnas.1702849114
发表时间:
2017-07-03
影响因子:
11.1
作者:
Cory, Seth A.;Van Vranken, Jonathan G.;Barondeau, David P.
通讯作者:
Barondeau, David P.
影响因子:
16.6
作者:
Freibert, Sven-A.;Goldberg, Alina V.;Lill, Roland
通讯作者:
Lill, Roland
DOI:
10.1107/s0907444909042073
发表时间:
2010-01
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Chen VB;Arendall WB 3rd;Headd JJ;Keedy DA;Immormino RM;Kapral GJ;Murray LW;Richardson JS;Richardson DC
通讯作者:
Richardson DC
DOI:
10.1073/pnas.1322438111
发表时间:
2014-04-08
影响因子:
11.1
作者:
Angerer, Heike;Radermacher, Michael;Zickermann, Volker
通讯作者:
Zickermann, Volker