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S. coelicolor Wild Type Time-course Study in R5- medium (Culture#2)

ABSTRACT: Antibiotic biosynthesis in Streptomyces species is controlled by a complex genetic and biochemical network of global and pathway specific regulators. Details of their precise interactions in mediating temporal and spatial expression of secondary metabolite genes remain poorly defined. In this study, we employed whole-genome microarrays to investigate the temporal transcriptome profiles of S. coelicolor A3(2) M145 wild type and disruption mutants of regulatory genes (afsS and absA1) known to affect antibiotic biosynthesis. Keywords: Time course

ORGANISM(S): Streptomyces coelicolor

PROVIDER: GSE8086 | GEO | 2007/06/19

SECONDARY ACCESSION(S): PRJNA100929

REPOSITORIES: GEO

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Project description:Antibiotic biosynthesis in Streptomyces species is controlled by a complex genetic and biochemical network of global and pathway specific regulators. Details of their precise interactions in mediating temporal and spatial expression of secondary metabolite genes remain poorly defined. In this study, we employed whole-genome microarrays to investigate the temporal transcriptome profiles of S. coelicolor A3(2) M145 wild type and disruption mutants of regulatory genes (afsS and absA1) known to affect antibiotic biosynthesis. Keywords: Time course The time-course study involved analysis of 9 samples (10h, 13h, 16h, 19h, 22h, 25h, 31h, 35h, 37h). Of these, the 16h sample was analyzed on three arrays (3 technical replicates). All other samples were analyzed on duplicate arrays (2 technical replicates). Genomic DNA of S. coelicolor wild type (M145) was used as a reference for all the arrays. cDNA was labeled with Alexa647 and genomic DNA was labeled with Cy3.

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Project description:Antibiotic biosynthesis in Streptomyces species is controlled by a complex genetic and biochemical network of global and pathway specific regulators. Details of their precise interactions in mediating temporal and spatial expression of secondary metabolite genes remain poorly defined. In this study, we employed whole-genome microarrays to investigate the temporal transcriptome profiles of S. coelicolor A3(2) afsS::apr mutant strain (YSK4425) and compare it to wild-type M145 strain. The regulatory protein encoded by afsS is known to affect antibiotic biosynthesis (Floriano, B., Bibb, M. 1996. afsR is a pleiotropic but conditionally required regulatory gene for antibiotic production in Streptomyces coelicolor A3(2). Mol Microbiol, 21, 385-96). Keywords: Time course The time-course study involved analysis of 14 samples (15h, 17h, 19h, 21h, 23h, 25h, 28h, 31h, 32h, 35h, 37h, 38h, 41h, 45h). Of these, 15h, 17h, 19h, 21h, 23h, 25h, 32h, 41h, and 45h samples were analyzed on duplicate arrays (2 technical replicates). Genomic DNA of S. coelicolor wild type (M145) was used as a reference for all the arrays. cDNA was labeled with Alexa647 and genomic DNA was labeled with Cy3.

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