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Escherichia coli BW25113

ABSTRACT: Identifying Doxycycline resistance mutations in E. coli

PROVIDER: PRJNA773030 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR16702800_1.fastq.gz	Fastqsanger.gz
	SRR16702800_2.fastq.gz	Fastqsanger.gz
	SRR16702900_1.fastq.gz	Fastqsanger.gz
	SRR16702900_2.fastq.gz	Fastqsanger.gz
	SRR16702801_1.fastq.gz	Fastqsanger.gz

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Complete Genome Sequence of Escherichia coli BW25113.

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Transcriptome RNA Sequencing Data Set of Differential Gene Expression in Escherichia Coli BW25113 SlyA Wild Type and Mutant Strains

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Escherichia coli BW25113 cobB/pCA24N-cobB vs. cobB/pCA24N under stress conditions

Project description:Acetylation of lysine residues is conserved in all three kingdoms; however, its role in prokaryotes is unknown. Here we demonstrate that acetylation enables the reference bacterium Escherichia coli to withstand environmental stress. Specifically, the bacterium reaches higher cell densities and becomes more resistant to heat and oxidative stress when its proteins are acetylated, as shown by deletion of the gene encoding acetyltransferase YfiQ and the gene encoding deacetylase CobB, as well as by overproducing YfiQ and CobB. Furthermore, we show that the increase in oxidative stress resistance with acetylation is due to the induction of catalase activity through enhanced katG expression. We also found that two-component system proteins CpxA, PhoP, UvrY, and BasR are associated with cell catalase activity and may be responsible as the connection between bacterial acetylation and the stress response. This is the first demonstration of a specific environmental role of acetylation in prokaryotes.

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E. coli BW25113 frdC vs. E. coli BW25113 HW2

Project description:Glycerol is an attractive feedstock for biofuels since it accumulates as a byproduct during biodiesel operations; hence, it is interesting to consider converting glycerol to hydrogen using the formate hydrogen lyase system of Escherichia coli which converts pyruvate to hydrogen. Starting with Escherichia coli BW25113 frdC that lacks fumarate reductase to eliminate the negative effect of accumulated hydrogen on glycerol fermentation and by using both adaptive evolution and chemical mutagenesis combined with a selection method based on increased growth on glycerol, we obtained an improved strain, HW2, that produces 20-fold more hydrogen in glycerol medium (0.68 mmol/L/h) compared to that of frdC mutant. HW2 also grows 5-fold faster (0.25 1/h) than BW25113 frdC on glycerol, so it achieves a reasonable growth rate. Corroborating the increase in hydrogen production, glycerol dehydrogenase activity in HW2 increased 4-fold compared to BW25113 frdC. In addition, a whole-transcriptome study revealed that several pathways that would decrease hydrogen yields were repressed in HW2 (fbp, focA, and gatYZ) while a beneficial pathway, eno which encodes enolase was induced.

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Transcriptional responses of Escherichia coli rpoS- BW25113 vs. wild-type BW25113 under 15% ethanol shock in log phase

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