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Genome-wide identification of WblC (WhiB7) binding sites in Streptomyces coelicolor A3(2) treated with tetracycline

ABSTRACT: Genome-wide identification of WblC (WhiB7) binding sites in Streptomyces coelicolor A3(2) treated with tetracycline

PROVIDER: PRJNA561422 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR10011622_1.fastq.gz	Fastqsanger.gz
	SRR10011622_2.fastq.gz	Fastqsanger.gz
	SRR10011623_1.fastq.gz	Fastqsanger.gz
	SRR10011623_2.fastq.gz	Fastqsanger.gz

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Genome-wide identification of WblC (WhiB7) binding sites in Streptomyces coelicolor A3(2) treated with tetracycline

Project description:We determined Streptomyces coelicolor genes that are directly regulated by WblC (or WhiB7), an actinobacterial transcription factor that activates expression of intrinsic resistance in response to translation-inhibitory antibiotic stress. Identification of differentially expressed genes in wblC mutant by RNA-seq and WblC binding sites in wild type by ChIP-seq identified more than 300 genes as WblC regulon. This series encompasses the ChIP-seq data of our study.

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WblC- and tetracycline-dependent shifts in the composition of Streptomyces coelicolor ribosomal proteome

Project description:WblC, also known as WhiB7, is a widely conserved WhiB-like transcription factor in actinomycetes that activates transcription of many targets upon antibiotic challenge to bring about intrinsic resistance to a wide range of translation-targeting antibiotics. As we found that WblC controls many genes involved in translation and that WblC promotes translation rate upon antibiotic stress in the model actinomycetes Streptomyces coelicolor, we speculated that WblC might alter the protein composition of ribosome during antibiotic stress. To test this, we prepared 70S ribosome fraction from wild-type S. coelicolor cells untreated or treated with tetracycline and ΔwblC mutant treated with tetracycline, and then compared the protein compositions of each 70S samples by mass spectrometric quantification.

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Transcriptome profiles of Streptomyces coelicolor A3(2) wild type and wblC (whiB7) mutant treated with tetracycline

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Genome-wide identification of WblC (WhiB7) binding sites and Transcriptome profiles of Streptomyces coelicolor A3(2) wild type and wblC (whiB7) mutant treated with tetracycline

Project description:Genome-wide identification of WblC (WhiB7) binding sites and Transcriptome profiles of Streptomyces coelicolor A3(2) wild type and wblC (whiB7) mutant treated with tetracycline

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Comparative genomic hybridization Streptomyces coelicolor A3(2) strains

Project description:The chromosomes of several widely used laboratory derivatives of Streptomyces coelicolor A3(2) were found to have 1.06 Mb inverted repeat sequences at their termini (i.e. long-terminal inverted repeats; L-TIRs), which are 50 times the length of the 22 kb TIRs of the sequenced S. coelicolor strain M145. The L-TIRs include 1005 annotated genes and increase the overall chromosome size to 9.7 Mb. The 1.06 Mb L-TIRs are the longest reported thus far for an actinomycete, and are proposed to represent the chromosomal state of the original soil isolate of S. coelicolor A3(2). S. coelicolor A3(2), M600 and J1501 possess L-TIRs, whereas approximately half the examined early mutants of A3(2) generated by ultraviolet (UV) or X-ray mutagenesis have truncated their TIRs to the 22 kb length. UV radiation was found to stimulate L-TIR truncation. Two copies of a transposase gene (SCO0020) flank 1.04 Mb of DNA in the right L-TIR, and recombination between them appears to generate strains containing short TIRs. This TIR reduction mechanism may represent a general strategy by which transposable elements can modulate the structure of chromosome ends. The presence of L-TIRs in certain S. coelicolor strains represents a major chromosomal alteration in strains previously thought to be genetically similar.

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