Figure 3From: Cis-2-dodecenoic acid signal modulates virulence of Pseudomonas aeruginosa through interference with quorum sensing systems and T3SSExogenous addition of BDSF caused the reduction of the transcriptional expression of T3SS master regulators and effectors, as determined by using RT-PCR analysis (A), and of secretion of ExoS determined by western blotting analysis (B). Bacteria were grown in LB medium to an OD600 of 1.5, supplemented with 5Â mM NTA and BDSF at a series of final concentrations as indicated. For each RNA sample, two dilutions (5, 50Â ng) were used as templates for RT-PCT reaction. For the western blotting analysis, the extra-cellular proteins in supernatants were collected by trichloroacetic acid precipitation and separated by 10% SDS-PAGE. The proteins were transferred onto nitrocellulose membrane and blotted with anti-ExoS antibody.Back to article page