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ABSTRACT: Global cellular metabolic rewiring adapts Corynebacterium glutamicum to efficient non-natural substrate utilization

PROVIDER: PRJNA763329 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR15901614_1.fastq.gz	Fastqsanger.gz
	SRR15901614_2.fastq.gz	Fastqsanger.gz
	SRR15901615_1.fastq.gz	Fastqsanger.gz
	SRR15901615_2.fastq.gz	Fastqsanger.gz
	SRR15901616_1.fastq.gz	Fastqsanger.gz

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Global cellular metabolic rewiring adapts Corynebacterium glutamicum to efficient non-natural substrate utilization

Project description:Global cellular metabolic rewiring adapts Corynebacterium glutamicum to efficient non-natural substrate utilization

| PRJNA764518 | ENA

Global cellular metabolic rewiring adapts Corynebacterium glutamicum to efficient non-natural substrate utilization

Project description:Efficient assimilation of renewable feedstocks is the cornerstone for achieving sustainable and economical microbial production of commodity chemicals. Unfortunately, most renewables are foreign to the cellular metabolism of classical industrial workhorses, resulting in unsatisfactory biomanufacturing performance. Here, Corynebacterium glutamicum was systematically engineered for rapid non-natural xylose metabolism and the underlying adaptations were elucidated by combining metabolic engineering, adaptive laboratory evolution and systems biology techniques. A plasmid-free, stable and efficient xylose-utilizing chassis strain, named CGS15, was reconstructed with both a rapid specific growth rate of 0.341 h-1 on xylose and an excellent co-utilization of glucose and xylose at a ratio of about 2:1. For the first time, we revealed a novel xylose regulatory mechanism by the endogenous transcription factor IpsA with global regulatory effects on C. glutamicum core carbon and energy metabolism. The coordination between the heterologous xylose metabolism and the endogenous carbon/energy metabolism both endowed cells with accelerated growth and released carbon catabolite repression. Finally, this chassis demonstrated great promise for lignocellulosic biorefinery applications by producing 97.1 g/L of the platform compound succinate from corn stalk hydrolysate with an average productivity of 8.09 g/L/h. This work provides an elegant paradigm to understand and engineer the metabolism of renewable substrates for sustainable biomanufacturing.

2022-10-03 | GSE184402 | GEO

Determination of transcriptional start sites in the presence of GABA for Corynebacterium glutamicum

Project description:In this study, we analyzed the regulation of ƴ-aminobutyrate (GABA) utilization in Corynebacterium glutamicum by the PucR-type transcriptional regulator GabR and by alternative nitrogen and carbon sources.

2020-09-29 | GSE156688 | GEO

Corynebacterium Cell Factory Design and Culture Process Optimization for Muconic Acid Biosynthesis

Project description:Muconic acid production from engineered Corynebacterium glutamicum. Gene expression analysis in the pathway redesigned Corynebacterium glutamicum

2018-11-30 | E-MTAB-7350 | biostudies-arrayexpress

Comparison of Corynebacterium glutamicum Δcg2699 with WT

Project description:To identify genes which are differentially expressed in Corynebacterium glutamicum in the cg2699 deletion strain, we performed DNA microarray analyses of C. glutamicum Δcg2699 compared to the WT.

2018-08-28 | GSE117566 | GEO

Comparison of Corynebacterium glutamicum Δsurf1 and wt

Project description:To identify genes which are differentially expressed in Corynebacterium glutamicum in the cg2460 deletion strain, we performed DNA microarray analyses of C. glutamicum Δcg2460 compared to the WT.

2019-07-11 | GSE123974 | GEO

Global transcriptomic analysis of the response of Corynebacterium glutamicum to vanillin

Project description:Lignocellulosic biomass is an abundant and renewable resource for biofuels and bio-based chemicals. Vanillin is one of the major phenolic inhibitors in biomass production using lignocellulose. To assess the response of Corynebacterium glutamicum to vanillin stress, a global transcriptional response analysis was performed by using microarray.

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Control of heme homeostasis in Corynebacterium glutamicum by the two-component system HrrSA

Project description:The response regulator HrrA belonging to the HrrSA two-component system (previously named CgtSR11) is known to be repressed by the global iron-dependent regulator DtxR in Corynebacterium glutamicum. Sequence analysis indicated an involvement of the HrrSA system in heme-dependent gene expression. Growth experiments revealed that the non-pathogenic soil bacterium C. glutamicum is able to use hemin or hemoglobin as sole iron source. In DNA microarray analyses a putative operon encoding the hemin-binding protein HtaA and the putative hemin ABC transporter HmuTUV showed a strong upregulation in heme-grown cells. Deletion of the hmu operon clearly affects heme utilization, but does not completely abolish growth on heme or hemoglobin. As a central part of this study, we investigated the regulon of the response regulator HrrA via comparative transcriptome analysis of a hrrA deletion mutant and C. glutamicum wild type in combination with DNA-protein interaction studies with purified HrrA protein. Our data provide evidence for a heme-dependent transcriptional activation of heme oxygenase (hmuO), an enzyme involved in the utilization of heme as iron source. Besides hmuO, HrrA was shown to activate the expression of heme-containing components of the respiratory chain, namely ctaD and the ctaE-qcrCAB operon encoding subunits I and III of cytochrome aa3 oxidase and three subunits of the cytochrome bc1 complex. Furthermore, HrrA represses almost all genes involved in heme biosynthesis, including glutamyl-tRNA reductase (hemA), uroporphyrinogen decarboxylase (hemE), and ferrochelatase (hemH). Thus, our data clearly emphasize a central role of the HrrSA system in the control of heme homeostasis in C. glutamicum.

2010-12-17 | GSE26122 | GEO

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Project description:Cryo-EM Structure of the bcc-aa3 respiratory chain supercomplex from Corynebacterium glutamicum

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Function of l-Pipecolic acid as a compatible solute in Corynebacterium glutamicum as the basis for its production under hyperosmolar conditions

Project description:Pipecolic acid or L-PA is a cyclic amino acid derived from L-lysine which has gained interest in the recent years within the pharmaceutical and chemical industries. L-PA can be produced efficiently using recombinant Corynebacterium glutamicum strains by expanding the natural L-lysine biosynthetic pathway. We show that de novo synthesized or externally added L-PA partially is beneficial for growth under hyper-osmotic stress conditions. C. glutamicum cells accumulated L-PA under elevated osmotic pressure and released it after an osmotic down shock. The proline permease ProP was identified as a candidate L-PA uptake system since RNAseq analysis revealed increased proP RNA levels upon L-PA production

2019-05-31 | GSE122249 | GEO

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