Project description:The RNA sequencing approach was utilized to carry out a comparative transcriptome analysis between Streptomyces hygroscopicus 5008 wild-type and a genetically engineered strain. The A-factor-like cascade play an important role in the regulation of validamycin biosynthesis by Streptomyces hygroscopicus 5008, and the pleiotropic regulator AdpA-H may positively regulate the transcription of gene cluster for the biosynthesis. shbR1 and shbR3 as the A-factor receptor homolog genes, could repress the transcription of AdpA-H. By tandem deletions of these genes, the production and productivity of validamcyin was significantly enhanced. To explore the effects of the shbR1/R3 double deletion of the overall cellular metabolism, the RNA sequencing approach was utilized to carry out a comparative transcriptome analysis between wild-type and shbR1/shbR3 double mutant (genetically engineered strain).
Project description:This study compared the genome of Streptomyces rimosus rimosus against that of Streptomyces coelicolor. It also compared 4 strains with changes in oxytetracycline production and derived from G7, the type strain, against G7. Keywords: Comparative genomic hybridization
Project description:To identify unique gene expression in higher antibiotics producing Streptomyces coelicolor strain, non-producer M1146 and the derivative strain M1146+ACT (M1146 with actinorhodin biosynthetic genes cluster) was choosen for comparative transcriptome analysis. The genes with different gene expression might be key genes important for antibiotics production.
Project description:To discover novel regulators that influence avermectin biosynthesis, comparative transcriptome analysis between wild-type strain ATCC31267 and avermectin overproducing strain 76-02-e were performed to reveal some differentially expressed genes.
Project description:We isolated an efficient tetracycline degrading strain Sphingobacterium sp. WM1. To investigate gene expression patterns during tetracycline degradation by strain WM1, we conducted a comparative transcriptomic analysis using cultures of strain WM1 with and without tetracycline addition. The RNA-Seq data revealed that 90.44-96.56% of the reads mapped to the genome of Sphingobacterium sp. WM1 across all samples. Differentially expressed genes (DEGs) analysis (|log2FC| >2; p < 0.01) showed that 693 genes were significantly up-regulated and 592 genes were significantly down-regulated.
