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The ROK-family regulator RokL6 is involved in GlcN toxicity by controlling the transcription of SCO1448 in Streptomyces coelicolor.

ABSTRACT: The ROK-family regulator RokL6 is involved in GlcN toxicity by controlling the transcription of SCO1448 in Streptomyces coelicolor.

PROVIDER: PRJNA981421 | ENA |

REPOSITORIES: ENA

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The ROK-family regulator RokL6 is involved in GlcN toxicity by controlling the transcription of SCO1448 in Streptomyces coelicolor [ChIP-seq]

Project description:Streptomycetes are saprophytic bacteria that grow on complex polysaccharides, such as cellulose, starch, chitin and chitosan. For the monomeric building blocks glucose, maltose and N-acetylglucosamine the metabolic pathway is well documented, but that of glucosamine (GlcN) is currently unknown. Importantly, GlcN is lethal to Streptomyces coelicolor nagB mutants, which lack glucosamine-6-phosphate deaminase activity. Here we report that spontaneous and directed mutations in the gene for the ROK-family protein RokL6 (SCO1447) relieve GlcN toxicity in nagB mutants of S. coelicolor. RNA sequencing, ChIP-Seq and over-expression studies revealed that RokL6 acts by directly repressing SCO1448, which encodes a sugar exporter; RokL6 thereby only binds to the rokL6-SCO1448 intergenic region in vivo, with consensus binding site C(T)TATCAGG - 7 nt - CCTGATAG(A). The exact transcriptional start sites for rokL6 and SCO1448 were determined using 5’RACE. RokL6 represses the transcription of both rokL6 and SCO1448 by binding to overlapping promoter sequences. Taken together, our data show that RokL6 and SCO1448 are novel GlcN-related genes, whereby RokL6 directly controls the transcription of SCO1448. The latter is a key protein in the defense of S. coelicolor against the toxicity of GlcN in a nagB-mutant background, most likely via the export of GlcN-derived toxic intermediates.

2023-06-19 | GSE234438 | GEO

The ROK-family regulator RokL6 is involved in GlcN toxicity by controlling the transcription of SCO1448 in Streptomyces coelicolor [RNA-seq]

2023-06-19 | GSE234437 | GEO

The ROK-family regulator RokL6 is involved in GlcN toxicity by controlling the transcription of SCO1448 in Streptomyces coelicolor [RNA-seq]

Project description:The ROK-family regulator RokL6 is involved in GlcN toxicity by controlling the transcription of SCO1448 in Streptomyces coelicolor [RNA-seq]

| PRJNA981424 | ENA

The ROK-family regulator RokL6 is involved in GlcN toxicity by controlling the transcription of SCO1448 in Streptomyces coelicolor [ChIP-seq]

Project description:The ROK-family regulator RokL6 is involved in GlcN toxicity by controlling the transcription of SCO1448 in Streptomyces coelicolor [ChIP-seq]

| PRJNA981425 | ENA

The ROK-family regulator RokL6 is involved in GlcN toxicity by controlling the transcription of SCO1448 in Streptomyces coelicolor.

Project description:This SuperSeries is composed of the SubSeries listed below.

2023-06-19 | GSE234439 | GEO

S coelicolor ∆argR vs S. coelicolor M145

Project description:S. coelicolor M145 and S. coelicolor ∆argR were grown in MG medium and samples from 3 biological replicates were taken at 32, 42, 49, 56 and 66 hours.

2015-08-19 | GSE58666 | GEO

Streptomyces coelicolor

Project description:S coelicolor ∆argR vs S. coelicolor M145

| PRJNA253124 | ENA

Grandala coelicolor

Project description:Grandala coelicolor

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The Streptomyces coelicolor DegS-DegU-like regulon

Project description:The Streptomyces coelicolor two genes operon SCO5784-SCO5785 encodes a two-component system which functions in a similar manner to that of the Bacillus subtilis DegS-DegU system. Propagation of the regulatory gene in high copy number results in the overproduction of several extracellular enzymes, among them the major extracellular protease, as well as in a higher level of synthesis of the antibiotic actinorhodin. This two-component system seems to control various processes characterised by the transition from primary to secondary metabolism in S. coelicolor, as determined by proteomic and transcriptomic analices. The presence of the regulatory gene in high copy number in S. coelicolor additionally seems to elicit a stringent response in the bacterial cell. Therefore, we propose renaming S. coelicolor genes SCO5784 and SCO5785 as degS and degU, respectively.

2012-05-04 | GSE23195 | GEO

Regional organization of gene expression in Streptomyces coelicolor

Project description:Based on the chromosomal locations of genes inferred from sequence analysis to be essential for the viability of Streptomyces coelicolor, Bentley et al. (Bentley et al., 2002) have suggested that a 4.9 Mb central region of the linear S. coelicolor chromosome encodes core functions expressed during vegetative growth of this species, while 1.5 Mb and 2.3 Mb chromosomal DNA segments lateral to this core encode auxiliary functions proposed to be required under other growth conditions. To examine this hypothesis and experimentally identify genes expressed during vegetative growth of S. coelicolor cultures, we used DNA microarrays to measure globally the abundance of S. coelicolor transcripts in cells growing in liquid medium. We found that, overall, genes corresponding to the 4.9 Mb core region of the S. coelicolor M145 chromosome were more highly expressed under non-limiting growth conditions than genes in the 1.5 Mb left and 2.3 Mb right chromosome arms, supporting the notion of the core versus auxiliary organization of genes on the chromosome. To examine how this chromosomal distribution of transcripts changes under other growth conditions, we also measured gene expression changes during stationary phase and several stress conditions. During stationary phase, the composition of S. coelicolor transcripts appears to shift from large quantities of growth-related transcripts encoded in the core region to those of less characterized genes, which may be essential for differentiation and other physiological responses, encoded throughout the chromosome. After temperature and osmotic upshifts, we found that S. coelicolor transiently induces a set of several hundred genes located throughout the chromosome, which may function in response mechanisms common to the two stress conditions. Keywords: all_pairs

2005-07-12 | GSE2921 | GEO

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