ABSTRACT: Expression analysis of Thermococcus onnurineus NA1 KCTC10859 and an Frh-deficient mutant, Frh overexpression mutant and TON_0282 deletion mutant in a T. onnurineus NA1 strain.
Project description:Investigation of whole genome gene expression level changes in an Frh-deficient mutant, Frh overexpression mutant and TON_0282 deletion mutant, compared to the wild-type strain. In this study, as a first step to assess the role of the frhAGB-encoding hydrogenases and TON_0282 gene, we constructed three mutants by deleting each gene in a T. onnurineus NA1.
Project description:Hyperthermophilic archeaon, Thermococcus onnurineus NA1 has known as a strict anaerobe. To date, a few of studies have been reported that strict anaerobe can grow using oxygen. However, the research of the growth enhancement of strict anaerobic archaeon belonging to the order of Thermococcales using the oxygen, in which has never been reported so far. In this study, we showed that the growth of T. onnurineus NA1 strain increased under various oxygen concentrations and we observed that oxygen was decreased in the headspace during the growth of cell. Genome-wide transcriptomic analysis was carried out to evaluate alterations in gene expression induced by O2 and to explain the physiological effects of oxidative stress on the growth of T. onnurineus NA1.
Project description:In ordet to understand in vivo role of uncharacterized DNA-binding protein (TON_1525) in T. onnurineus NA1, TON_1525 gene deletion mutant was constructed. Also transcriptome analysis was perfomed between wild type and mutant strains to measure changed expression profile of genes by deletion of TON_1525 gene under CO supplemented medium.
