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- W4387453684 abstract "Sulfate-reducing bacteria (SRB) are ubiquitously distributed across various biospheres and play key roles in global sulfur cycles. However, few deep-sea SRB have been cultivated and studied in situ, limiting our understanding of the true metabolism of SRB in the deep biosphere. Here, we firstly clarified the high abundance of SRB in deep-sea cold seep sediments and successfully isolated a sulfate-reducing bacterium (strain zrk46). Our genomic, physiological and phylogenetic analyses indicate that strain zrk46 is a novel species, which we propose as Pseudodesulfovibrio serpens . Based on the combined results from growth assays and proteomic analyses, we found that supplementation with sulfate (SO 4 2- ), thiosulfate (S 2 O 3 2- ), or sulfite (SO 3 2- ) promoted the growth of strain zrk46 by facilitating energy production through the dissimilatory sulfate reduction with the auxiliary functions of heterodisulfide reductases, ferredoxins, and nitrate reduction associated proteins, which were coupled with the oxidation of environmental organic matter in both laboratory and deep-sea in situ conditions. Moreover, metatranscriptomic results confirmed the dissimilatory sulfate reduction of deep-sea SRB in deep-sea environment, which might be coupled to the methane oxidation of anaerobic methanotrophic archaea (ANME-2) through direct interspecies electron transfer via cytochromes." @default.
- W4387453684 created "2023-10-10" @default.
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- W4387453684 date "2023-10-06" @default.
- W4387453684 modified "2023-10-11" @default.
- W4387453684 title "Deep-sea<i>in situ</i>and laboratory proteomics provide insights into the sulfur metabolism of a novel deep-sea bacterium,<i>Pseudodesulfovibrio serpens</i>sp. nov." @default.
- W4387453684 doi "https://doi.org/10.1101/2023.10.05.561093" @default.
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