Genetic Potential of Dissulfurimicrobium hydrothermale, an Obligate Sulfur-Disproportionating Thermophilic Microorganism
Type | Article | ||||||||||||
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Date | 2022-01 | ||||||||||||
Language | English | ||||||||||||
Author(s) | Yvenou Steven1, Allioux Maxime1, Slobodkin Alexander2, Slobodkina Galina2, Jebbar Mohamed1, Alain Karine3 | ||||||||||||
Affiliation(s) | 1 : Laboratoire de Microbiologie des Environnements Extrêmes LM2E, Université de Brest, CNRS, IFREMER, IRP 1211 MicrobSea, IUEM, Rue Dumont d’Urville, F-29280 Plouzane, France 2 : Research Center of Biotechnology of the Russian Academy of Sciences, Winogradsky Institute of Microbiology, 117312 Moscow, Russia 3 : Laboratoire de Microbiologie des Environnements Extrêmes LM2E, Université de Brest, CNRS, IFREMER, IRP 1211 MicrobSea, IUEM, Rue Dumont d’Urville, F-29280 Plouzane, France |
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Source | Microorganisms (2076-2607) (MDPI AG), 2022-01 , Vol. 10 , N. 1 , P. 60 (16p.) | ||||||||||||
DOI | 10.3390/microorganisms10010060 | ||||||||||||
WOS© Times Cited | 5 | ||||||||||||
Note | This article belongs to the Special Issue Diversity of Extremophiles in Hydrothermal Environments | ||||||||||||
Keyword(s) | sulfur disproportionation, hydrothermal vent, genomics, thermophile | ||||||||||||
Abstract | The biochemical pathways of anaerobic sulfur disproportionation are only partially deciphered, and the mechanisms involved in the first step of S0-disproportionation remain unknown. Here, we present the results of sequencing and analysis of the complete genome of Dissulfurimicrobium hydrothermale strain Sh68T, one of two strains isolated to date known to grow exclusively by anaerobic disproportionation of inorganic sulfur compounds. Dissulfurimicrobium hydrothermale Sh68T is a motile, thermophilic, anaerobic, chemolithoautotrophic microorganism isolated from a hydrothermal pond at Uzon caldera, Kamchatka, Russia. It is able to produce energy and grow by disproportionation of elemental sulfur, sulfite and thiosulfate. Its genome consists of a circular chromosome of 2,025,450 base pairs, has a G + C content of 49.66% and a completion of 97.6%. Genomic data suggest that CO2 assimilation is carried out by the Wood–Ljungdhal pathway and that central anabolism involves the gluconeogenesis pathway. The genome of strain Sh68T encodes the complete gene set of the dissimilatory sulfate reduction pathway, some of which are likely to be involved in sulfur disproportionation. A short sequence protein of unknown function present in the genome of strain Sh68T is conserved in the genomes of a large panel of other S0-disproportionating bacteria and was absent from the genomes of microorganisms incapable of elemental sulfur disproportionation. We propose that this protein may be involved in the first step of elemental sulfur disproportionation, as S0 is poorly soluble and unable to cross the cytoplasmic membrane in this form. |
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