Responses of Pseudomonas to small toxic molecules by a mosaic of domains.

Transcriptional responses of microorganisms to environmental perturbations are broad and complex, and often involve regulatory cascades in which an interplay of regulatory factors trigger a specific expression program. Here, we describe how Pseudomonas responds to challenges from toxic chemicals, for which they use a dedicated program that subsequently confers resistance to these compounds. A mosaic of domains has been recruited to sense and metabolize these chemicals in order to obtain energy and carbon.