Project description:Pseudomonas aeruginosa is known to tolerate antibiotic therapy during infection. This prevents clearance of infection and negatively impacts patient outcomes. Here, we report the transcriptome sequence of antibiotic-treated and untreated P. aeruginosa cultures and the differential gene expression observed when treated cells are compared to untreated cells.
Project description:Pseudomonas aeruginosa PA3973 encodes a putative TetR family transcriptional regulator, with a helix-turn-helix motif involved in DNA binding. We applied phenotype analyses, as well as transcriptome profiling (RNA-seq), and genome-wide identification of binding sites using ChIP-seq to unravel the biological role of PA3973. The ChIP-seq analysis identified more than 300 PA3973 binding sites in the P. aeruginosa genome, among them 139 were located in intergenic regions. The 13 bp sequence was identified as the preferential binding site of PA3973. The PA3973 regulon encompasses genes involved in stress response, including the putative PA3973-PA3970 operon. Transcriptional profiling of P. aeruginosa PAO1161 overexpressing PA3973 showed changes in the mRNA level of 648 genes; among them, 374 were down-regulated. Concomitantly, ChIP-seq analysis identified more than 300 PA3973 binding sites in the P. aeruginosa genome, among them 139 were located in intergenic regions. The 13 bp sequence was identified as the preferential binding site of PA3973.
Project description:A knockout of nrtR gene (PA4916) of Pseudomonas aeruginosa leads to the global changes in metabolic profile of the pathogen to its complete avirulence.
Project description:Analysis of Pseudomonas aeruginosa PAO1 treated with 200 µM sphingomyelin. Results provide insight into the response to sphingomyelin in P. aeruginosa.
