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Nitratidesulfovibrio vulgaris str. Hildenborough

ABSTRACT: Global transcriptomic profiling of Desulfovibro vulgaris Hildenborough following transitions between sulfate respiration and syntrophy

PROVIDER: PRJNA296030 | ENA |

REPOSITORIES: ENA

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Proteomic data of Nitratidesulfovibrio vulgaris Hildenborough

Project description:We analyzed the proteome of the sulfate-reducing bacterium Nitratidesulfovibrio vulgaris Hildenborough (NvH) after tryptic in-solution digestion of whoel cell pellets. Cells were grown on 32 mM hydrogen, 4 mM acetate, and 8 mM sulfate

2026-03-23 | PXD068774 | Pride

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Combining metabolic flux analysis with proteomics to shed light on the metabolic flexibility: the case of Desulfovibrio vulgaris Hildenborough

Project description:Desulfovibrio vulgaris Hildenborough is a gram-negative anaerobic bacterium belonging to the sulfate-reducing bacteria, a group of microbes that can perform dissimilatory sulfate reduction coupled to the oxidation of various substrates as carbon and energy sources. In the absence of sulfate, they can also ferment organic acids in syntrophy with methanogens. They exhibit high metabolic diversity switching from one energy mode to another depending on nutrients availability in the environments. Hence, they play a central role in shaping ecosystems. Despite, intensive efforts to study D. vulgaris energy metabolism at the genomic, biochemical and ecological level, bioenergetics in this microorganism remains far from being fully understood. Alternatively, few metabolic models were also proposed to explain D. vulgaris bioenergetics. However, they appeared to be not easily adaptable to various environmental conditions. To lift off these limitations, here we constructed a new transparent and robust metabolic model of D. vulgaris bioenergetics by combining whole-cell proteomic analysis with modeling approaches (Flux Balance Analysis). The iDvu71 model showed over 0.95 correlation with experimental data. Further simulations allowed a detailed description of D. vulgaris metabolism in various conditions of growth. Altogether, the simulations run in this study highlighted the sulfate-to-lactate consumption ratio as a pivotal factor in D. vulgaris energy metabolism. In particular, the impact on the hydrogen/formate balance and biomass synthesis is discussed. Overall, this study provides a novel insight into D. vulgaris metabolic flexibility.

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