scholarly journals Mössbauer Spectroscopy on Respiratory Complex I: The Iron–Sulfur Cluster Ensemble in the NADH-Reduced Enzyme Is Partially Oxidized

Biochemistry ◽  
2011 ◽  
Vol 51 (1) ◽  
pp. 149-158 ◽  
Author(s):  
Hannah R. Bridges ◽  
Eckhard Bill ◽  
Judy Hirst
Keyword(s):  
Mössbauer Spectroscopy ◽  
Complex I ◽  
Mossbauer Spectroscopy ◽  
Iron Sulfur Cluster ◽  
Sulfur Cluster ◽  
Cluster Ensemble ◽  
Respiratory Complex ◽  
Mößbauer Spectroscopy ◽  
Iron Sulfur ◽  
Respiratory Complex I

scholarly journals The iron-sulfur scaffold protein HCF101 unveils the complexity of organellar evolution in SAR, Haptista and Cryptista

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Jan Pyrih ◽  
Vojtěch Žárský ◽  
Justin D. Fellows ◽  
Christopher Grosche ◽  
Dorota Wloga ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
Complex I ◽  
Phaeodactylum Tricornutum ◽  
Tetrahymena Thermophila ◽  
Thalassiosira Pseudonana ◽  
Cellular Distribution ◽  
Iron Sulfur Cluster ◽  
Iron Sulfur ◽  
Secondary Plastids ◽  
Respiratory Complex I

Abstract Background Nbp35-like proteins (Nbp35, Cfd1, HCF101, Ind1, and AbpC) are P-loop NTPases that serve as components of iron-sulfur cluster (FeS) assembly machineries. In eukaryotes, Ind1 is present in mitochondria, and its function is associated with the assembly of FeS clusters in subunits of respiratory Complex I, Nbp35 and Cfd1 are the components of the cytosolic FeS assembly (CIA) pathway, and HCF101 is involved in FeS assembly of photosystem I in plastids of plants (chHCF101). The AbpC protein operates in Bacteria and Archaea. To date, the cellular distribution of these proteins is considered to be highly conserved with only a few exceptions. Results We searched for the genes of all members of the Nbp35-like protein family and analyzed their targeting sequences. Nbp35 and Cfd1 were predicted to reside in the cytoplasm with some exceptions of Nbp35 localization to the mitochondria; Ind1was found in the mitochondria, and HCF101 was predicted to reside in plastids (chHCF101) of all photosynthetically active eukaryotes. Surprisingly, we found a second HCF101 paralog in all members of Cryptista, Haptista, and SAR that was predicted to predominantly target mitochondria (mHCF101), whereas Ind1 appeared to be absent in these organisms. We also identified a few exceptions, as apicomplexans possess mHCF101 predicted to localize in the cytosol and Nbp35 in the mitochondria. Our predictions were experimentally confirmed in selected representatives of Apicomplexa (Toxoplasma gondii), Stramenopila (Phaeodactylum tricornutum, Thalassiosira pseudonana), and Ciliophora (Tetrahymena thermophila) by tagging proteins with a transgenic reporter. Phylogenetic analysis suggested that chHCF101 and mHCF101 evolved from a common ancestral HCF101 independently of the Nbp35/Cfd1 and Ind1 proteins. Interestingly, phylogenetic analysis supports rather a lateral gene transfer of ancestral HCF101 from bacteria than its acquisition being associated with either α-proteobacterial or cyanobacterial endosymbionts. Conclusion Our searches for Nbp35-like proteins across eukaryotic lineages revealed that SAR, Haptista, and Cryptista possess mitochondrial HCF101. Because plastid localization of HCF101 was only known thus far, the discovery of its mitochondrial paralog explains confusion regarding the presence of HCF101 in organisms that possibly lost secondary plastids (e.g., ciliates, Cryptosporidium) or possess reduced nonphotosynthetic plastids (apicomplexans).

scholarly journals MOSSBAUER SPECTROSCOPY OF THE IRON-SULFUR PROTEINS

1969 ◽  
Vol 63 (4) ◽  
pp. 1234-1238 ◽  
Author(s):  
C. E. Johnson ◽  
R. C. Bray ◽  
R. Cammack ◽  
D. O. Hall
Keyword(s):  
Mössbauer Spectroscopy ◽  
Mossbauer Spectroscopy ◽  
Mößbauer Spectroscopy ◽  
Iron Sulfur ◽  
Iron Sulfur Proteins

Iron−Sulfur Cluster N7 of the NADH:Ubiquinone Oxidoreductase (Complex I) Is Essential for Stability but Not Involved in Electron Transfer†

Biochemistry ◽  
2007 ◽  
Vol 46 (22) ◽  
pp. 6588-6596 ◽  
Author(s):  
Thomas Pohl ◽  
Theresa Bauer ◽  
Katerina Dörner ◽  
Stefan Stolpe ◽  
Philipp Sell ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Complex I ◽  
Nadh:Ubiquinone Oxidoreductase ◽  
Iron Sulfur Cluster ◽  
Sulfur Cluster ◽  
Iron Sulfur

scholarly journals The site of production of superoxide radical in mitochondrial Complex I is not a bound ubisemiquinone but presumably iron-sulfur cluster N2

FEBS Letters ◽  
2001 ◽  
Vol 505 (3) ◽  
pp. 364-368 ◽  
Author(s):  
Maria Luisa Genova ◽  
Barbara Ventura ◽  
Giovanni Giuliano ◽  
Carla Bovina ◽  
Gabriella Formiggini ◽  
...  
Keyword(s):  
Complex I ◽  
Superoxide Radical ◽  
Mitochondrial Complex I ◽  
Mitochondrial Complex ◽  
Iron Sulfur Cluster ◽  
Sulfur Cluster ◽  
Iron Sulfur

scholarly journals The Redox-Bohr Group Associated with Iron-Sulfur Cluster N2 of Complex I

2006 ◽  
Vol 281 (32) ◽  
pp. 23013-23017 ◽  
Author(s):  
Klaus Zwicker ◽  
Alexander Galkin ◽  
Stefan Dröse ◽  
Ljuban Grgic ◽  
Stefan Kerscher ◽  
...  
Keyword(s):  
Complex I ◽  
Iron Sulfur Cluster ◽  
Sulfur Cluster ◽  
Iron Sulfur

scholarly journals The multitude of iron–sulfur clusters in respiratory complex I

2016 ◽  
Vol 1857 (8) ◽  
pp. 1068-1072 ◽  
Author(s):  
Emmanuel Gnandt ◽  
Katerina Dörner ◽  
Marc F.J. Strampraad ◽  
Simon de Vries ◽  
Thorsten Friedrich
Keyword(s):  
Complex I ◽  
Iron Sulfur Clusters ◽  
Respiratory Complex ◽  
Iron Sulfur ◽  
Respiratory Complex I

scholarly journals Iron-sulfur cluster carrier proteins involved in the assembly of Escherichia coli NADH:ubiquinone oxidoreductase (complex I)

2018 ◽  
Vol 111 (1) ◽  
pp. 31-45 ◽  
Author(s):  
Sabrina Burschel ◽  
Doris Kreuzer Decovic ◽  
Franziska Nuber ◽  
Marie Stiller ◽  
Maud Hofmann ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Complex I ◽  
Nadh:Ubiquinone Oxidoreductase ◽  
Carrier Proteins ◽  
Iron Sulfur Cluster ◽  
Sulfur Cluster ◽  
Iron Sulfur
Sign in / Sign up

Export Citation Format

Share Document