Project description:isp-1;sod double mutants have decreased lifespan, increased resistance to oxidative stress and slow physiologic rates. We performed RNA sequencing to compare gene expression between isp-1 mutants and isp-1;sod-3 and isp-1;sod-5 double mutants
Project description:This project aims to discover novel bioactive compounds from Streptomyces isolated from the rhizosphere from wild medicinal plants from Hamedan province, Iran. Proteomics is used to assist in discovery and characterization of the compounds. Streptomyces isolates are grown on ISP-4 medium for three days, proteins were extracted and analysed by shotgun proteomics.
Project description:Streptomyces tsukubaensis NRRL 18488 is the preferred strain for the production of immunosuppressant agent tacrolimus (FK506). To take full advantage of its genetic potential, systematic understanding of secondary metabolism and related regulatory mechanisms is highly demanded. Here, to this end, we complete its 7.9 Mbp linear genome sequence followed by integrating with multi-omics measurements. With accurate reannotation of FK506 gene cluster, total 2,389 transcription start sites were determined by using primary transcriptome analysis. Integrated analysis of transcriptome and translatome data revealed that secondary metabolic gene clusters, especially FK506 cluster, undergo translational control with decrease in translational efficiency according to the growth. Furthermore, we demonstrated that SD motif has little correlation with ribosome pausing but AT-rich codons delay the translational elongation. Strong ribosome pausing was observed in the rare TTA codon in FK506 cluster. This comprehensive genome-scale analysis provides insight to the translational regulation of secondary metabolism in S. tsukubaensis.
Project description:Mitomycin C is a DNA crosslinking agent. This experiment was carried out to determine the effect of Mitomycin C on genome wide transcription in Streptomyces venezuelae NRRL B65442.