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Streptomyces clavuligerus strain:ATCC 27064

ABSTRACT: Connection of iron homesostasis and antibiotic production in Streptomyces clavuligerus

PROVIDER: PRJNA938016 | ENA |

REPOSITORIES: ENA

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Transcriptional analysis between Streptomyces clavuligerus ATCC 27064 and a mutant altered in antibiotic production

Project description:The objective was to analyze the differential expression between the wild strain and the Streptomyces clavuligerus ΔclaR::aac mutant Six experimental conditions were assayed, two strains (Streptomyces clavuligerus ATCC 27064, S. clavuligerus ΔclaR::aac) in three culture times (22.5h, 46.5h and 60 h). Two biological replicates for each condition.

2015-08-05 | E-GEOD-66683 | biostudies-arrayexpress

Transcriptional analysis between Streptomyces clavuligerus ATCC 27064 and a mutant altered in antibiotic production

Project description:The objective was to analyze the differential expression between the wild strain and the Streptomyces clavuligerus ΔclaR::aac mutant

2015-08-05 | GSE66683 | GEO

Transcriptional analysis between Streptomyces clavuligerus ATCC 27064 and mutants altered in the antibiotics production

Project description:The objective is to analyze the differential expression between the wild strain and a ccaR-deleted and oppA2::aph mutants 6 biological conditions were used, three strains in two times (exponential and stationary growth phase; Streptomyces clavuligerus ATCC 27064, S. clavuligerus M-bM-^HM-^FccaR and S. clavuligerus oppA2::aph). Four biological replicates were made for each condition

2014-07-01 | E-GEOD-51435 | biostudies-arrayexpress

Transcriptional analysis between Streptomyces clavuligerus ATCC 27064 and a pSCL4- S. clavuligerus mutant

Project description:The objective is to analyze the differential expression between the wild strain and a pSCL4- S. clavuligerus mutant Experiment type Expression profiling by array

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Streptomyces clavuligerus strain:ATCC 27064

Project description:Streptomyces clavuligerus strain:ATCC 27064 Genome sequencing

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Streptomyces clavuligerus strain:ATCC 27064

Project description:Streptomyces clavuligerus ATCC 27064 genome sequencing project

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Streptomyces clavuligerus strain:ATCC 27064

Project description:Streptomyces clavuligerus strain:ATCC 27064 Raw sequence reads

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Streptomyces clavuligerus Transcriptome using adpA deleted and overexpressed mutants

Project description:RNA seq analysis was performed using adpA-deleted and adpA-overexpressed Streptomyces clavuligerus strains to determine its regulatory effect on tunicamycin and other secondary metabolites production

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Teleocidin-producing genotype of Streptomyces clavuligerus ATCC 27064.

Project description:Streptomyces clavuligerus is an industrially important producer of clavulanic acid (CA), a β-lactamase inhibitor which is used together with amoxicillin in one of the most widely prescribed antibacterial medicines, the co-amoxiclav. In a mid-eighties ATCC vial of S. clavuligerus ATCC 27064 culture, we have found a new genotype, which was apparently lost from the subsequent ATCC collection stocks, and has remained obscure to the scientific community. Most importantly, this genotype harbors teleocidin (lyngbyatoxin) biosynthetic genes, which are located on an enigmatic 138 kb chromosomal region and support accumulation of significant amounts of these highly toxic, tumor-promoting secondary metabolites in cultures of S. clavuligerus. While this genomic region is completely absent from all published sequences for S. clavuligerus ATCC strain, at least one of the industrial strains for commercial production of CA, originating from ATCC 27064, retained the genetic potential for production of teleocidins. The origin of teleocidin biosynthetic cluster can now be traced back to early S. clavuligerus stocks at the ATCC. Our work provides a genome sequence and a deposited monoisolate of this genotype. Given the scale of industrial use of S. clavuligerus world-wide and toxicity of teleocidins, we also discuss the environmental and safety implications and provide a method of abolishing teleocidin production without affecting productivity of CA. KEY POINTS: • Early stocks of S. clavuligerus ATCC 27064 produce toxic teleocidins • Teleocidin biosynthetic genes were found within a distinct S. clavuligerus genotype • The genotype has been passed on to some industrial clavulanic acid producer strains.

| S-EPMC8882083 | biostudies-literature

Expression data from Streptomyces clavuligerus

Project description:To increase production of the important pharmaceutical compounds, both mutagenesis approaches and rational engineering have been extensively applied. Mutagenesis approaches are most popular in industry, but their effects have not yet been studied very well. Here, we used microarrays to compare the transcriptomes of the S. clavuligerus wild type (ATCC 27064) strain and the DS48802 clavulanic acid high-producer strain, which has been obtained by classical strain improvement (mutagenesis). Streptomyces clavuligerus strains were grown in shake flasks. RNA was extracted after 70h and hybridized to microarrays.

2010-11-10 | E-GEOD-24033 | biostudies-arrayexpress

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