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Articoli di riviste sul tema "Electron transport Complex I"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 7 febbraio 2022

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1

Bose, Himangshu S., Brendan Marshall, Dilip K. Debnath, Elizabeth W. Perry, and Randy M. Whittal. "Electron Transport Chain Complex II Regulates Steroid Metabolism." iScience 23, no. 7 (July 2020): 101295. http://dx.doi.org/10.1016/j.isci.2020.101295.

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2

Zhang, Jiecheng, Erik D. Kountz, Kamran Behnia, and Aharon Kapitulnik. "Thermalization and possible signatures of quantum chaos in complex crystalline materials." Proceedings of the National Academy of Sciences 116, no. 40 (September 12, 2019): 19869–74. http://dx.doi.org/10.1073/pnas.1910131116.

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Analyses of thermal diffusivity data on complex insulators and on strongly correlated electron systems hosted in similar complex crystal structures suggest that quantum chaos is a good description for thermalization processes in these systems, particularly in the high-temperature regime where the many phonon bands and their interactions dominate the thermal transport. Here we observe that for these systems diffusive thermal transport is controlled by a universal Planckian timescale τ∼ℏ/kBT and a unique velocity vE. Specifically, vE≈vph for complex insulators, and vph≲vE≪vF in the presence of s

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3

Kr�ger, A., J. Paulsen, and I. Schr�der. "Phorphorylative electron transport chains lacking a cytochromebc 1 complex." Journal of Bioenergetics and Biomembranes 18, no. 3 (June 1986): 225–34. http://dx.doi.org/10.1007/bf00743465.

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4

Chen, Yongqiang, and Isamu Suzuki. "Effects of electron transport inhibitors and uncouplers on the oxidation of ferrous iron and compounds interacting with ferric iron inAcidithiobacillus ferrooxidans." Canadian Journal of Microbiology 51, no. 8 (August 1, 2005): 695–703. http://dx.doi.org/10.1139/w05-051.

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Oxidation of Fe2+, ascorbic acid, propyl gallate, tiron, L-cysteine, and glutathione by Acidithiobacillus ferrooxidans was studied with respect to the effect of electron transport inhibitors and uncouplers on the rate of oxidation. All the oxidations were sensitive to inhibitors of cytochrome c oxidase, KCN, and NaN3. They were also partially inhibited by inhibitors of complex I and complex III of the electron transport system. Uncouplers at low concentrations stimulated the oxidation and inhibited it at higher concentrations. The oxidation rates of Fe2+and L-cysteine inhibited by complex I an

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5

Onukwufor, John O., Brandon J. Berry, and Andrew P. Wojtovich. "Physiologic Implications of Reactive Oxygen Species Production by Mitochondrial Complex I Reverse Electron Transport." Antioxidants 8, no. 8 (August 6, 2019): 285. http://dx.doi.org/10.3390/antiox8080285.

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Mitochondrial reactive oxygen species (ROS) can be either detrimental or beneficial depending on the amount, duration, and location of their production. Mitochondrial complex I is a component of the electron transport chain and transfers electrons from NADH to ubiquinone. Complex I is also a source of ROS production. Under certain thermodynamic conditions, electron transfer can reverse direction and reduce oxygen at complex I to generate ROS. Conditions that favor this reverse electron transport (RET) include highly reduced ubiquinone pools, high mitochondrial membrane potential, and accumulat

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6

Spero, Melanie A., Joshua R. Brickner, Jordan T. Mollet, Tippapha Pisithkul, Daniel Amador-Noguez, and Timothy J. Donohue. "Different Functions of Phylogenetically Distinct Bacterial Complex I Isozymes." Journal of Bacteriology 198, no. 8 (February 1, 2016): 1268–80. http://dx.doi.org/10.1128/jb.01025-15.

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ABSTRACTNADH:quinone oxidoreductase (complex I) is a bioenergetic enzyme that transfers electrons from NADH to quinone, conserving the energy of this reaction by contributing to the proton motive force. While the importance of NADH oxidation to mitochondrial aerobic respiration is well documented, the contribution of complex I to bacterial electron transport chains has been tested in only a few species. Here, we analyze the function of two phylogenetically distinct complex I isozymes inRhodobacter sphaeroides, an alphaproteobacterium that contains well-characterized electron transport chains.

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7

Burkhardt, Carolyn, James P. Kelly, Young-Hwa Lim, Christopher M. Filley, and W. Davis Parker. "Neuroleptic medications inhibit complex I of the electron transport chain." Annals of Neurology 33, no. 5 (May 1993): 512–17. http://dx.doi.org/10.1002/ana.410330516.

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8

Jackson-Lewis, Vernice, and Serge Przedborski. "Neuroleptic medications inhibit complex I of the electron transport chain." Annals of Neurology 35, no. 2 (February 1994): 244–45. http://dx.doi.org/10.1002/ana.410350221.

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9

Yan, Liuming, and Jorge M. Seminario. "Electronic Structure and Electron Transport Characteristics of a Cobalt Complex." Journal of Physical Chemistry A 109, no. 30 (August 2005): 6628–33. http://dx.doi.org/10.1021/jp052798k.

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10

Demaurex, Nicolas, and Gábor L. Petheö. "Electron and proton transport by NADPH oxidases." Philosophical Transactions of the Royal Society B: Biological Sciences 360, no. 1464 (November 4, 2005): 2315–25. http://dx.doi.org/10.1098/rstb.2005.1769.

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The NADPH oxidase is the main weapon of phagocytic white blood cells that are the first line of defence of our body against invading pathogens, and patients lacking a functional oxidase suffer from severe and recurrent infections. The oxidase is a multisubunit enzyme complex that transports electrons from cytoplasmic NADPH to molecular oxygen in order to generate superoxide free radicals. Electron transport across the plasma membrane is electrogenic and is associated with the flux of protons through voltage-activated proton channels. Both proton and electron currents can be recorded with the p

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11

Pittman, M. S., and D. J. Kelly. "Electron transport through nitrate and nitrite reductases in Campylobacter jejuni." Biochemical Society Transactions 33, no. 1 (February 1, 2005): 190–92. http://dx.doi.org/10.1042/bst0330190.

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Campylobacter jejuni is a small genome pathogen that is incapable of growing strictly anaerobically due to its dependence on an oxygen-requiring ribonucleotide reductase for DNA synthesis. Nevertheless, it has a complex branched respiratory chain, which allows the use of several alternative electron acceptors for growth under oxygen-limited conditions. C. jejuni is equipped with both nitrate reductase (Nap) and nitrite reductase (Nrf) located in the periplasm, each predicted to receive electrons from menaquinol through distinct redox proteins. The pathways of electron transport to nitrate and

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12

Tanaka-Esposito, Christine, Qun Chen, Shadi Moghaddas, and Edward J. Lesnefsky. "Ischemic preconditioning does not protect via blockade of electron transport." Journal of Applied Physiology 103, no. 2 (August 2007): 623–28. http://dx.doi.org/10.1152/japplphysiol.00943.2006.

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Ischemic preconditioning (IPC) before sustained ischemia decreases myocardial infarct size mediated in part via protection of cardiac mitochondria. Reversible blockade of electron transport at complex I immediately before sustained ischemia also preserves mitochondrial respiration and decreases infarct size. We proposed that IPC would attenuate electron transport from complex I as a potential effector mechanism of cardioprotection. Isolated, Langendorff-perfused rat hearts underwent IPC (3 cycles of 5-min 37°C global ischemia and 5-min reperfusion) or were perfused for 40 min without ischemia

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13

Okamoto, Akihiro, Yoshihide Tokunou, Shafeer Kalathil, and Kazuhito Hashimoto. "Proton Transport in the Outer-Membrane Flavocytochrome Complex Limits the Rate of Extracellular Electron Transport." Angewandte Chemie International Edition 56, no. 31 (June 29, 2017): 9082–86. http://dx.doi.org/10.1002/anie.201704241.

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14

Okamoto, Akihiro, Yoshihide Tokunou, Shafeer Kalathil, and Kazuhito Hashimoto. "Proton Transport in the Outer-Membrane Flavocytochrome Complex Limits the Rate of Extracellular Electron Transport." Angewandte Chemie 129, no. 31 (June 29, 2017): 9210–14. http://dx.doi.org/10.1002/ange.201704241.

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15

Fuhrmann, Dominik C., Catherine Olesch, Nina Kurrle, Frank Schnütgen, Sven Zukunft, Ingrid Fleming та Bernhard Brüne. "Chronic Hypoxia Enhances β-Oxidation-Dependent Electron Transport via Electron Transferring Flavoproteins". Cells 8, № 2 (18 лютого 2019): 172. http://dx.doi.org/10.3390/cells8020172.

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Hypoxia poses a stress to cells and decreases mitochondrial respiration, in part by electron transport chain (ETC) complex reorganization. While metabolism under acute hypoxia is well characterized, alterations under chronic hypoxia largely remain unexplored. We followed oxygen consumption rates in THP-1 monocytes during acute (16 h) and chronic (72 h) hypoxia, compared to normoxia, to analyze the electron flows associated with glycolysis, glutamine, and fatty acid oxidation. Oxygen consumption under acute hypoxia predominantly demanded pyruvate, while under chronic hypoxia, fatty acid- and gl

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16

Yi, John S., Beth C. Holbrook, Ryan D. Michalek, Nathan G. Laniewski, and Jason M. Grayson. "Electron Transport Complex I Is Required for CD8+T Cell Function." Journal of Immunology 177, no. 2 (July 3, 2006): 852–62. http://dx.doi.org/10.4049/jimmunol.177.2.852.

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17

Kristal, B. S. "Structure-(Dys)function Relationships in Mitochondrial Electron Transport Chain Complex II?" Science of Aging Knowledge Environment 2003, no. 5 (February 5, 2003): 3pe—3. http://dx.doi.org/10.1126/sageke.2003.5.pe3.

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18

Esposti, Mauro Degli, and Anna Ghelli. "The mechanism of proton and electron transport in mitochondrial complex I." Biochimica et Biophysica Acta (BBA) - Bioenergetics 1187, no. 2 (August 1994): 116–20. http://dx.doi.org/10.1016/0005-2728(94)90095-7.

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19

Ogasawara, Hiroshi, Yuji Ishida, Kayoko Yamada, Kaneyoshi Yamamoto, and Akira Ishihama. "PdhR (Pyruvate Dehydrogenase Complex Regulator) Controls the Respiratory Electron Transport System in Escherichia coli." Journal of Bacteriology 189, no. 15 (May 18, 2007): 5534–41. http://dx.doi.org/10.1128/jb.00229-07.

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ABSTRACT The pyruvate dehydrogenase (PDH) multienzyme complex plays a key role in the metabolic interconnection between glycolysis and the citric acid cycle. Transcription of the Escherichia coli genes for all three components of the PDH complex in the pdhR-aceEF-lpdA operon is repressed by the pyruvate-sensing PdhR, a GntR family transcription regulator, and derepressed by pyruvate. After a systematic search for the regulation targets of PdhR using genomic systematic evolution of ligands by exponential enrichment (SELEX), we have identified two novel targets, ndh, encoding NADH dehydrogenase

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20

Mishra, Sujata R., and Surendra Chandra Sabat. "Effect of Magnesium and Calcium Ions on the Photoelectron Transport Activity of Low-Salt Suspended Hydrilla verticillata Thylakoids: Possible Sites of Cation Interaction." Zeitschrift für Naturforschung C 53, no. 9-10 (October 1, 1998): 849–56. http://dx.doi.org/10.1515/znc-1998-9-1011.

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Stimulatory effect of divalent cations like calcium (Ca2+) and magnesium (Mg2+) was investigated on electron transport activity of divalent cation deficient low-salt suspended (LS) thylakoid preparation from a submerged aquatic angiosperm, Hydrilla verticillata. Both the cations stimulated electron transport activity of LS-suspended thylakoids having an intact water oxidation complex. But in hydroxylamine (NH2OH) - or alkaline Tris - washed thylakoid preparations (with the water oxidation enzyme impaired), only Ca2+ dependent stimulation of electron transport activity was found. The apparent K

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21

Matsubayashi, Makoto, Daniel Ken Inaoka, Keisuke Komatsuya, Takeshi Hatta, Fumiya Kawahara, Kimitoshi Sakamoto, Kenji Hikosaka, et al. "Novel Characteristics of Mitochondrial Electron Transport Chain from Eimeria tenella." Genes 10, no. 1 (January 8, 2019): 29. http://dx.doi.org/10.3390/genes10010029.

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Eimeria tenella is an intracellular apicomplexan parasite, which infects cecal epithelial cells from chickens and causes hemorrhagic diarrhea and eventual death. We have previously reported the comparative RNA sequence analysis of the E. tenella sporozoite stage between virulent and precocious strains and showed that the expression of several genes involved in mitochondrial electron transport chain (ETC), such as type II NADH dehydrogenase (NDH-2), complex II (succinate:quinone oxidoreductase), malate:quinone oxidoreductase (MQO), and glycerol-3-phosphate dehydrogenase (G3PDH), were upregulate

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22

Lapuente-Brun, Esther, Raquel Moreno-Loshuertos, Rebeca Acín-Pérez, Ana Latorre-Pellicer, Carmen Colás, Eduardo Balsa, Ester Perales-Clemente, et al. "Supercomplex Assembly Determines Electron Flux in the Mitochondrial Electron Transport Chain." Science 340, no. 6140 (June 27, 2013): 1567–70. http://dx.doi.org/10.1126/science.1230381.

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The textbook description of mitochondrial respiratory complexes (RCs) views them as free-moving entities linked by the mobile carriers coenzyme Q (CoQ) and cytochrome c (cyt c). This model (known as the fluid model) is challenged by the proposal that all RCs except complex II can associate in supercomplexes (SCs). The proposed SCs are the respirasome (complexes I, III, and IV), complexes I and III, and complexes III and IV. The role of SCs is unclear, and their existence is debated. By genetic modulation of interactions between complexes I and III and III and IV, we show that these association

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23

Tanigawa, Minoru, Tomomitsu Shinohara, Katsushi Nishimura, Kumiko Nagata, Morio Ishizuka, and Yoko Nagata. "Purification of Helicobacter pylori NCTC 11637 Cytochrome bc1 and Respiration with d-Proline as a Substrate." Journal of Bacteriology 192, no. 5 (December 18, 2009): 1410–15. http://dx.doi.org/10.1128/jb.01111-09.

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ABSTRACT Helicobacter pylori is a microaerophilic bacterium associated with gastric inflammation and peptic ulcers. Knowledge of how pathogenic organisms produce energy is important from a therapeutic point of view. We found d-amino acid dehydrogenase-mediated electron transport from d-proline or d-alanine to oxygen via the respiratory chain in H. pylori. Coupling of the electron transport to ATP synthesis was confirmed by using uncoupler reagents. We reconstituted the electron transport chain to demonstrate the electron flow from the d-amino acids to oxygen using the recombinant cytochrome bc

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24

Kruse, Thomas, Bram A. van de Pas, Ariane Atteia, Klaas Krab, Wilfred R. Hagen, Lynne Goodwin, Patrick Chain, et al. "Genomic, Proteomic, and Biochemical Analysis of the Organohalide Respiratory Pathway in Desulfitobacterium dehalogenans." Journal of Bacteriology 197, no. 5 (December 15, 2014): 893–904. http://dx.doi.org/10.1128/jb.02370-14.

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Desulfitobacterium dehalogenansis able to grow by organohalide respiration using 3-chloro-4-hydroxyphenyl acetate (Cl-OHPA) as an electron acceptor. We used a combination of genome sequencing, biochemical analysis of redox active components, and shotgun proteomics to study elements of the organohalide respiratory electron transport chain. The genome ofDesulfitobacterium dehalogenansJW/IU-DC1Tconsists of a single circular chromosome of 4,321,753 bp with a GC content of 44.97%. The genome contains 4,252 genes, including six rRNA operons and six predicted reductive dehalogenases. One of the reduc

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25

Guan, T., S. Müller, G. Klier, N. Panté, J. M. Blevitt, M. Haner, B. Paschal, U. Aebi, and L. Gerace. "Structural analysis of the p62 complex, an assembly of O-linked glycoproteins that localizes near the central gated channel of the nuclear pore complex." Molecular Biology of the Cell 6, no. 11 (November 1995): 1591–603. http://dx.doi.org/10.1091/mbc.6.11.1591.

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The p62 complex is an oligomeric assembly of O-linked glycoproteins of the nuclear pore complex that interacts with cytosolic transport factors and is part of the machinery for nuclear protein import. In this study we have purified the p62 complex from rat liver nuclear envelopes and analyzed its structure and composition. The p62 complex consists of four distinct polypeptides (p62, p58, p54, and p45) and has a mass of approximately 234 kDa, calculated from its hydrodynamic properties and supported by chemical cross-linking and scanning transmission electron microscopy. These data suggest that

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26

Parrish, Jonathan C., J. Guy Guillemette, and Carmichael JA Wallace. "Contribution of leucine 85 to the structure and function of Saccharomyces cerevisiae iso-1 cytochrome c." Biochemistry and Cell Biology 79, no. 4 (August 1, 2001): 517–24. http://dx.doi.org/10.1139/o01-077.

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Cytochrome c is a small electron-transport protein whose major role is to transfer electrons between complex III (cytochrome reductase) and complex IV (cytochrome c oxidase) in the inner mitochondrial membrane of eukaryotes. Cytochrome c is used as a model for the examination of protein folding and structure and for the study of biological electron-transport processes. Amongst 96 cytochrome c sequences, residue 85 is generally conserved as either isoleucine or leucine. Spatially, the side chain is associated closely with that of the invariant residue Phe82, and this interaction may be importan

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27

Harrison, Elizabeth. "Role-Playing Activity to Demonstrate the Electron Transport Chain." American Biology Teacher 82, no. 5 (May 1, 2020): 338–40. http://dx.doi.org/10.1525/abt.2020.82.5.338.

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The role of the electron transport chain, its associated proteins, and carrier molecules can be difficult for introductory biology students to understand. Role-playing activities provide a simple, active, cost-effective method for demonstrating and comprehending complex biological processes. This role-playing activity was designed to help introductory biology students learn the role of the electron transport chain in the synthesis of ATP. The activity can be completed within a single class period and, when combined with a post-activity writing assignment, can enhance student understanding of h

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28

Storti, Mattia, Maria Paola Puggioni, Anna Segalla, Tomas Morosinotto, and Alessandro Alboresi. "The chloroplast NADH dehydrogenase-like complex influences the photosynthetic activity of the moss Physcomitrella patens." Journal of Experimental Botany 71, no. 18 (June 4, 2020): 5538–48. http://dx.doi.org/10.1093/jxb/eraa274.

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Abstract Alternative electron pathways contribute to regulation of photosynthetic light reactions to adjust to metabolic demands in dynamic environments. The chloroplast NADH dehydrogenase-like (NDH) complex mediates the cyclic electron transport pathway around PSI in different cyanobacteria, algae, and plant species, but it is not fully conserved in all photosynthetic organisms. In order to assess how the physiological role of this complex changed during plant evolution, we isolated Physcomitrella patens lines knocked out for the NDHM gene that encodes a subunit fundamental for the activity o

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29

White, Gaye F., Zhi Shi, Liang Shi, Alice C. Dohnalkova, James K. Fredrickson, John M. Zachara, Julea N. Butt, David J. Richardson, and Thomas A. Clarke. "Development of a proteoliposome model to probe transmembrane electron-transfer reactions." Biochemical Society Transactions 40, no. 6 (November 21, 2012): 1257–60. http://dx.doi.org/10.1042/bst20120116.

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The mineral-respiring bacterium Shewanella oneidensis uses a protein complex, MtrCAB, composed of two decahaem cytochromes brought together inside a transmembrane porin to transport electrons across the outer membrane to a variety of mineral-based electron acceptors. A proteoliposome system has been developed that contains Methyl Viologen as an internalized electron carrier and valinomycin as a membrane-associated cation exchanger. These proteoliposomes can be used as a model system to investigate MtrCAB function.

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Kocherga, Margaret, Jose Castaneda, Michael G. Walter, Yong Zhang, Nemah-Allah Saleh, Le Wang, Daniel S. Jones, et al. "Si(bzimpy)2 – a hexacoordinate silicon pincer complex for electron transport and electroluminescence." Chemical Communications 54, no. 100 (2018): 14073–76. http://dx.doi.org/10.1039/c8cc07681b.

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Miller, Kenneth R., and Jules S. Jacob. "Surface structure of the photosystem II complex." Proceedings, annual meeting, Electron Microscopy Society of America 49 (August 1991): 196–97. http://dx.doi.org/10.1017/s0424820100085289.

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The Photosystem II (PS-II) complex is organized around a photosynthetic reaction center (RC) embedded in the photosynthetic membrane. PS-II traps the energy of sunlight and uses it drive highenergy electron transport across the photosynthetic membrane. PS-II is closely associated with a group of proteins known as the oxygen-evolving complex (OEC), which are bound to the inner surface of the photosynthetic membrane. This complex splits water to yield electrons that are passed to the RC, releasing molecular oxygen. We have used freeze-etch electron microscopy to study 2-dimensional crystals of t

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Liang, C. J., Z. R. Hong, X. Y. Liu, D. X. Zhao, D. Zhao, W. L. Li, J. B. Peng, J. Q. Yu, C. S. Lee, and S. T. Lee. "Organic electroluminescent devices using europium complex as an electron-transport emitting layer." Thin Solid Films 359, no. 1 (January 2000): 14–16. http://dx.doi.org/10.1016/s0040-6090(99)00713-0.

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Tikhonov, Alexander N. "The cytochrome b6f complex at the crossroad of photosynthetic electron transport pathways." Plant Physiology and Biochemistry 81 (August 2014): 163–83. http://dx.doi.org/10.1016/j.plaphy.2013.12.011.

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Schlegel, Katharina, Cornelia Welte, Uwe Deppenmeier, and Volker Müller. "Electron transport during aceticlastic methanogenesis byMethanosarcina acetivoransinvolves a sodium-translocating Rnf complex." FEBS Journal 279, no. 24 (November 8, 2012): 4444–52. http://dx.doi.org/10.1111/febs.12031.

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Robb, Ellen L., Andrew R. Hall, Tracy A. Prime, Simon Eaton, Marten Szibor, Carlo Viscomi, Andrew M. James, and Michael P. Murphy. "Control of mitochondrial superoxide production by reverse electron transport at complex I." Journal of Biological Chemistry 293, no. 25 (May 9, 2018): 9869–79. http://dx.doi.org/10.1074/jbc.ra118.003647.

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Jones, T. W., I. L. Tregillis, and D. Ryu. "Computation of relativistic electron acceleration, transport and emissions in complex astrophysical flows." Computer Physics Communications 147, no. 1-2 (August 2002): 476–79. http://dx.doi.org/10.1016/s0010-4655(02)00335-1.

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Lee, Seonmin, Eunyoung Tak, Jisun Lee, MA Rashid, Michael P. Murphy, Joohun Ha, and Sung Soo Kim. "Mitochondrial H2O2 generated from electron transport chain complex I stimulates muscle differentiation." Cell Research 21, no. 5 (March 29, 2011): 817–34. http://dx.doi.org/10.1038/cr.2011.55.

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JÜNEMANN, SUSANNE, and JOHN M. WRIGGLESWORTH. "Inhibitors of electron transport in the cytochrome bd complex of Azotobacter vinelandii." Biochemical Society Transactions 22, no. 3 (August 1, 1994): 287S. http://dx.doi.org/10.1042/bst022287s.

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Maeda, H., R. Sakamoto, and H. Nishihara. "Electron Transport Behavior Analysis of Bis(terpyridine) Metal Complex Wires on Electrodes." ECS Transactions 75, no. 11 (September 23, 2016): 17–24. http://dx.doi.org/10.1149/07511.0017ecst.

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Herter, Stefan Michael, Christiane Maria Kortlüke, and G. Drews. "Complex I of Rhodobacter capsulatus and its role in reverted electron transport." Archives of Microbiology 169, no. 2 (February 5, 1998): 98–105. http://dx.doi.org/10.1007/s002030050548.

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Sirey, Tamara M., and Chris P. Ponting. "Insights into the post-transcriptional regulation of the mitochondrial electron transport chain." Biochemical Society Transactions 44, no. 5 (October 15, 2016): 1491–98. http://dx.doi.org/10.1042/bst20160100.

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Abstract (sommario):

The regulation of the mitochondrial electron transport chain is central to the control of cellular homeostasis. There are significant gaps in our understanding of how the expression of the mitochondrial and nuclear genome-encoded components of the electron transport chain are co-ordinated, and how the assembly of the protein complexes that constitute the electron transport chain are regulated. Furthermore, the role post-transcriptional gene regulation may play in modulating these processes needs to be clarified. This review summarizes the current knowledge regarding the post-transcriptional ge

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Panagaki, Theodora, Elisa B. Randi, Fiona Augsburger, and Csaba Szabo. "Overproduction of H2S, generated by CBS, inhibits mitochondrial Complex IV and suppresses oxidative phosphorylation in Down syndrome." Proceedings of the National Academy of Sciences 116, no. 38 (September 3, 2019): 18769–71. http://dx.doi.org/10.1073/pnas.1911895116.

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Down syndrome (DS) is associated with significant perturbances in mitochondrial function. Here we tested the hypothesis that the suppression of mitochondrial electron transport in DS cells is due to high expression of cystathionine-β-synthase (CBS) and subsequent overproduction of the gaseous transmitter hydrogen sulfide (H2S). Fibroblasts from DS individuals showed higher CBS expression than control cells; CBS localization was both cytosolic and mitochondrial. DS cells produced significantly more H2S and polysulfide and exhibited a profound suppression of mitochondrial electron transport, oxy

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Lesnefsky, Edward J., Tatyana I. Gudz, Catharina T. Migita, Masao Ikeda-Saito, Medhat O. Hassan, Peter J. Turkaly, and Charles L. Hoppel. "Ischemic Injury to Mitochondrial Electron Transport in the Aging Heart: Damage to the Iron–Sulfur Protein Subunit of Electron Transport Complex III." Archives of Biochemistry and Biophysics 385, no. 1 (January 2001): 117–28. http://dx.doi.org/10.1006/abbi.2000.2066.

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44

Sakamoto, Ryota, Kuo-Hui Wu, Ryota Matsuoka, Hiroaki Maeda та Hiroshi Nishihara. "π-Conjugated bis(terpyridine)metal complex molecular wires". Chemical Society Reviews 44, № 21 (2015): 7698–714. http://dx.doi.org/10.1039/c5cs00081e.

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Abstract (sommario):

This review focuses on the bottom-up fabrication of linear and branched bis(terpyridine)metal complex wires on electrode surfaces, which feature distinct and characteristic electronic functionalities such as intra-wire redox conduction and excellent long-range electron transport ability.

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45

Ricci, Jean-Ehrland, Roberta A. Gottlieb, and Douglas R. Green. "Caspase-mediated loss of mitochondrial function and generation of reactive oxygen species during apoptosis." Journal of Cell Biology 160, no. 1 (January 6, 2003): 65–75. http://dx.doi.org/10.1083/jcb.200208089.

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Abstract (sommario):

During apoptosis, the permeabilization of the mitochondrial outer membrane allows the release of cytochrome c, which induces caspase activation to orchestrate the death of the cell. Mitochondria rapidly lose their transmembrane potential (ΔΨm) and generate reactive oxygen species (ROS), both of which are likely to contribute to the dismantling of the cell. Here we show that both the rapid loss of ΔΨm and the generation of ROS are due to the effects of activated caspases on mitochondrial electron transport complexes I and II. Caspase-3 disrupts oxygen consumption induced by complex I and II sub

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46

Otten, Marijke F., John van der Oost, Willem N. M. Reijnders, Hans V. Westerhoff, Bernd Ludwig, and Rob J. M. Van Spanning. "Cytochromes c550,c552, and c1 in the Electron Transport Network of Paracoccus denitrificans: Redundant or Subtly Different in Function?" Journal of Bacteriology 183, no. 24 (December 15, 2001): 7017–26. http://dx.doi.org/10.1128/jb.183.24.7017-7026.2001.

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ABSTRACT Paracoccus denitrificans strains with mutations in the genes encoding the cytochrome c 550,c 552, or c 1 and in combinations of these genes were constructed, and their growth characteristics were determined. Each mutant was able to grow heterotrophically with succinate as the carbon and free-energy source, although their specific growth rates and maximum cell numbers fell variably behind those of the wild type. Maximum cell numbers and rates of growth were also reduced when these strains were grown with methylamine as the sole free-energy source, with the triple cytochromec mutant fai

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47

Eguchi, Reo, Yuya Takekuma, Tsuyoshi Ochiai, and Morio Nagata. "Improving Interfacial Charge-Transfer Transitions in Nb-Doped TiO2 Electrodes with 7,7,8,8-Tetracyanoquinodimethane." Catalysts 8, no. 9 (August 30, 2018): 367. http://dx.doi.org/10.3390/catal8090367.

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Abstract (sommario):

Interfacial charge-transfer (ICT) transitions involved in charge-separation mechanisms are expected to enable efficient photovoltaic conversions through one-step charge-separation processes. With this in mind, the charge-transfer complex fabricated from TiO2 nanoparticles and 7,7,8,8-tetracyanoquinodimethane (TCNQ) has been applied to dye-sensitized solar cells. However, rapid carrier recombination from the conduction band of TiO2 to the highest occupied molecular orbital (HOMO) of TCNQ remains a major issue for this complex. In this study, to inhibit surface-complex recombinations, we prepare

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48

Daldal, Fevzi, Sevnur Mandaci, Christine Winterstein, Hannu Myllykallio, Kristen Duyck, and Davide Zannoni. "Mobile Cytochrome c2 and Membrane-Anchored Cytochrome cy Are Both Efficient Electron Donors to the cbb3- andaa3-Type Cytochrome cOxidases during Respiratory Growth of Rhodobacter sphaeroides." Journal of Bacteriology 183, no. 6 (March 15, 2001): 2013–24. http://dx.doi.org/10.1128/jb.183.6.2013-2024.2001.

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ABSTRACT We have recently established that the facultative phototrophic bacterium Rhodobacter sphaeroides, like the closely relatedRhodobacter capsulatus species, contains both the previously characterized mobile electron carrier cytochromec 2 (cyt c 2) and the more recently discovered membrane-anchored cytc y. However, R. sphaeroides cytc y, unlike that of R. capsulatus, is unable to function as an efficient electron carrier between the photochemical reaction center and the cyt bc 1complex during photosynthetic growth. Nonetheless, R. sphaeroides cyt c y can act at least in R. capsulatus as a

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49

ESPOSTI DEGLI, Mauro, Anna NGO, Gabrielle L. McMULLEN, Anna GHELLI, Francesca SPARLA, Bruna BENELLI, Marina RATTA, and Anthony W. LINNANE. "The specificity of mitochondrial complex I for ubiquinones." Biochemical Journal 313, no. 1 (January 1, 1996): 327–34. http://dx.doi.org/10.1042/bj3130327.

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Abstract (sommario):

We report the first detailed study on the ubiquinone (coenzyme Q; abbreviated to Q) analogue specificity of mitochondrial complex I, NADH:Q reductase, in intact submitochondrial particles. The enzymic function of complex I has been investigated using a series of analogues of Q as electron acceptor substrates for both electron transport activity and the associated generation of membrane potential. Q analogues with a saturated substituent of one to three carbons at position 6 of the 2,3-dimethoxy-5-methyl-1,4-benzoquinone ring have the fastest rates of electron transport activity, and analogues

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50

KRUNGKRAI, J. "The multiple roles of the mitochondrion of the malarial parasite." Parasitology 129, no. 5 (October 5, 2004): 511–24. http://dx.doi.org/10.1017/s0031182004005888.

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Abstract (sommario):

Mitochondria of the malaria parasitePlasmodium falciparumare morphologically different between the asexual and sexual blood stages (gametocytes). In this paper recent findings of mitochondrial heterogeneity are reviewed based on their ultrastructural characteristics, metabolic activities and the differential expression of their genes in these 2 blood stages of the parasite. The existence of NADH dehydrogenase (complex I), succinate dehydrogenase (complex II), cytochrome c reductase (complex III) and cytochrome c oxidase (complex IV) suggests that the biochemically active electron transport sys

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