Regulation of the pehA gene encoding the major polygalacturonase of Xanthomonas campestris by CIp and RpfF.

The article states that sequence and mutational analysis has demonstrated that Xanthomonas campestris (Xcc) pehA encodes the major polygalacturonase, a member of family 28 of the glycosyl hydrolases. The article also states that transcriptional fusion assays showed that pehA transcription is greatly induced by polygalacturonic acid and positively regulated by c-adenylic acid (AMP) receptor protein-like protein (Clp) and the gene cluster RpfF, which is an enoyl-CoA hydratase homologue which is required for the synthesis of cis-11-methyl-2-dodecenoic acid, a low-molecular-mass diffusible signal factor.