Schuetz, M. and Brugna, M. and Lebrun, E. and Baymann, F. and Huber, Robert and Stetter, Karl-Otto and Hauska, Günter and Toci, R. and Lemesle-Meunier, D. and Tron, P. and Schmidt, C. and Nitschke, W. (2000) Early evolution of cytochrome bc complexes. JOURNAL OF MOLECULAR BIOLOGY, 300 (4). pp. 663-675. ISSN 0022-2836, 1089-8638
Full text not available from this repository. (Request a copy)Abstract
Primary structures, functional characteristics and phylogenetic relationships of subunits of cytochrome bc complexes from phylogenetically diverse bacterial and archaeal species were analysed. A single case of lateral gene transfer, i.e. the import of an epsilon-proteobacterial cytochrome bc(1) complex into Aquificales, was identified. For the enzyme in the remainder of the species studied, the obtained phylogenies were globally in line with small subunit rRNA trees. The distribution of a few key phylogenetic markers, such as contiguousness of cytochrome b, nature of the c-type subunit or spacing between b-heme Ligands, are discussed. A localised modification of previous tree topologies is proposed on the basis of the obtained data. The comparison of extant enzymes furthermore allowed us to define the minimal functional and evolutionary core of the enzyme. The data furthermore suggest that the ancestral enzyme was put together from subunits that previously had played a role in other electron transfer chains. (C) 2000 Academic Press.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | IRON-SULFUR PROTEIN; FORMING HYDROGEN-BONDS; RIESKE FES-PROTEIN; HELIOBACILLUS-MOBILIS; 2FE-2S CLUSTER; ISOPRENOID QUINONE; AQUIFEX-PYROPHILUS; ELECTRON-TRANSFER; REDOX COMPONENTS; ESCHERICHIA-COLI; bc complexes; bioenergetics; evolution; photosynthesis; respiration |
| Subjects: | 500 Science > 570 Life sciences 500 Science > 580 Botanical sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Pflanzenwissenschaften > Lehrstuhl für Zellbiologie und Pflanzenphysiologie (Prof. Dr. Klaus Grasser) Biology, Preclinical Medicine > Institut für Biochemie, Genetik und Mikrobiologie > Lehrstuhl für Mikrobiologie (Archaeenzentrum) |
| Depositing User: | Petra Gürster |
| Date Deposited: | 05 May 2021 05:33 |
| Last Modified: | 05 May 2021 05:33 |
| URI: | https://pred.uni-regensburg.de/id/eprint/42313 |
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