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Clostridium sp. strain HV4-5-A1G assembly

ABSTRACT: Clostridium sp. strain HV4-5-A1G assembly

PROVIDER: PRJEB20847 | ENA |

REPOSITORIES: ENA

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			Action	DRS
		Other
	FXYI02.dat.gz	Other
	FXYI02.fasta.gz	Fasta.gz
	FXYI02.master.dat	Other

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Clostridium sp. HV4-5-A1G

Project description:Clostridium sp. HV4-5-A1G Genome sequencing and assembly

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Ruminococcaceae bacterium strain HV4-5-B5C assembly

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Firmicutes bacterium strain HV4-6-A5C assembly

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Bacteroidaceae bacterium strain HV4-6-C5C genome assembly

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Isopropanol production in Clostridium sp.

Project description:Modeling guided pathway engineering for isopropanol production in Clostridium sp.

2022-02-15 | MSV000088839 | MassIVE

Effect of long-term adaptation of an acetogenic bacterium Clostridium sp. AWRP under acetate stress

Project description:Acetate is a simple carboxylic acid that is synthesized in various microorganisms. Although acetate toxicity and tolerance have been studied in many microorganisms, little is known about the effects of exogenous acetate on the cell growth of acetogenic bacteria. In this study, we report the phenotypic changes that occurred in the acetogenic bacterium Clostridium sp. AWRP as a result of an adaptive laboratory evolution under acetate challenge. When compared with the wild-type strain, the acetate-adapted strain displayed a tolerance to acetate up to 10 g L-1 and higher biomass yields in batch cultures, although the metabolite profiles greatly varied depending on culture conditions. Interestingly, genome sequencing revealed that the adapted strain harbored three point mutations in the genes encoding an electron-bifurcating hydrogenase, which is crucial to its autotrophic growth on CO2 + H2, in addition to one in the dnaK gene. Transcriptome analysis revealed the global change in the gene expression profile of the acetate-adapted strain. Strikingly, most genes involved in CO2-fixing Wood-Ljungdahl pathway and auxiliary pathways for energy conservation (e.g., Rnf complex, Nfn, etc.) were significantly down-regulated. In addition, we observed that a couple of metabolic pathways associated with dissimilation of nucleosides and carbohydrates were significantly up-regulated in the acetate-adapted strain as well as several amino acid biosynthetic pathways, indicating that the strain might increase its fitness by utilizing organic substrates in response to the down-regulation of carbon fixation. Further investigation into the carbon fixation degeneration of the acetate-adapted strain will provide practical implications in CO2 + H2 fermentation using acetogenic bacteria for long-term continuous fermentation. The transcriptome profiles of the wild-type Clostridium sp. AWRP and its acetate-tolerant derivative 46T-a were compared.

2022-06-26 | GSE206757 | GEO

Expression analysis of motile strain of Sphingomonas sp. A1

Project description:Investigation of whole genome gene expression level in motile strain of Sphingomonas. sp A1 All flagellar genes in motile strain of Sphingomonas. sp A1 are highly transcribed.

2014-11-01 | GSE62901 | GEO

quantitative proteomic analysis to reveal expression differences for butanol production from glycerol and glucose by Clostridium sp. strain CT7

Project description:Clostridium sp. strain CT7 is a new emerging microbial cell factory with high butanol ratio owing to the non-traditional butanol fermentation mode with uncoupled acetone and 1,3-propanediol formation. Significant change of products profile was shown in glycerol- and glucose-fed strain CT7, especially much higher butanol and lower volatile fatty acids production from glycerol-fed one. However, the mechanism of this interesting phenomenon was still unclear. To better elaborate the bacterial response towards glycerol and glucose, the quantitative proteomic analysis through iTRAQ strategy was performed to reveal the regulated proteomic expression levels under different substrates. Proteomics data showed highly increased proteomic expression levels of proteins related with glycerol utilization and solvent generation under glycerol media. In addition, the up-regulation of hydrogenases, ferredoxins and electron-transferring proteins may attribute to the internal redox balance, while the earlier triggered sporulation response in glycerol-fed media may be associated with the higher butanol fermentation. This study will provide the platform for metabolic engineering of this emerging industrial microorganism for more efficient butanol production from glycerol.

2021-09-08 | PXD016848 | Pride

Transcriptomic insights of a 1,3-Propanediol producer Clostridium strain isolated from Colombian soil

Project description:The possibility of establishing a Clostridium-based biorefinery is an attractive and viable alternative, due to the wide metabolic versatility of these microorganisms. The Bioprocesses and Bioprospecting group of the Universidad Nacional de Colombia has obtained the genome of Clostridium sp. IBUN13A, which has shown the ability to produce solvents from various substrates and postulated the need to expand the knowledge of the physiology of the bacteria, so, this study establishes the differences in the transcriptomic profile of the strain when it is cultivated in glycerol respect to glucose after 24 hours of fermentation. For this, a RNA-seq study was carried out, and some of the genes that increased its expression on glycerol were related to the oxidative route of its consumption. The enrichment analysis of Gene Ontology terms showed that the biological phenomena with the highest representation within the differentially expressed genes correspond to oxidation-reduction processes. This first approach to the global transcriptomic study of glycerol fermentation allows the understanding of the metabolism of the microorganism with the purpose of choosing targets for genetic modification.

2021-06-27 | GSE178968 | GEO

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