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| Slobodkin, Alexander; Slobodkina, Galina; Allioux, Maxime; Alain, Karine; Jebbar, Mohamed; Shadrin, Valerian; Kublanov, Ilya; Toshchakov, Stepan; Bonch-osmolovskaya, Elizaveta. |
| nformation on the biochemical pathways of carbon and energy metabolism in representatives of the deep lineage bacterial phylum Deferribacteres are scarce. Here, we report the results of the sequencing and analysis of the high-quality draft genome of the thermophilic chemolithoautotrophic anaerobe Deferribacter autotrophicus. Genomic data suggest that CO2 assimilation is carried out by recently proposed reversible tricarboxylic acid cycle (“roTCA cycle”). The predicted genomic ability of D. autotrophicus to grow due to the oxidation of carbon monoxide was experimentally proven. CO oxidation was coupled with the reduction of nitrate to ammonium. Utilization of CO most likely involves anaerobic [Ni, Fe]-containing CO dehydrogenase. This is the first evidence... |
| Tipo: Text |
Palavras-chave: Autotrophic; Thermophile; RoTCA cycle; CO oxidation; Fe(III)-reduction; Nitrate reduction. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00589/70078/68051.pdf |
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| Haverkamp, Thomas H. A.; Geslin, Claire; Lossouarn, Julien; Podosokorskaya, Olga A.; Kublanov, Ilya; Nesbo, Camilla L.. |
| Thermosipho species inhabit thermal environments such as marine hydrothermal vents, petroleum reservoirs, and terrestrial hot springs. A 16S rRNA phylogeny of available Thermosipho spp. sequences suggested habitat specialists adapted to living in hydrothermal vents only, and habitat generalists inhabiting oil reservoirs, hydrothermal vents, and hotsprings. Comparative genomics of 15 Thermosipho genomes separated them into three distinct species with different habitat distributions: The widely distributed T. africanus and the more specialized, T. melanesiensis and T. affectus. Moreover, the species can be differentiated on the basis of genome size (GS), genome content, and immune system composition. For instance, the T. africanus genomes are largest and... |
| Tipo: Text |
Palavras-chave: Extremophiles; Hydrothermal vents; Mobile DNA; Speciation; Thermotogae; Vitamine B-12. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00478/58934/61503.pdf |
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