prpR, ntrA, and ihf functions are required for expression of the prpBCDE operon, encoding enzymes that catabolize propionate in Salmonella enterica serovar typhimurium LT2.

Abstract excerpt

The genes required for the catabolism of propionate in Salmonella enterica serovar Typhimurium are organized as two transcriptional units (prpR and prpBCDE) that are divergently transcribed from one another. Sequence homology to genes encoding members of the sigma-54 family of transcriptional activators and the identification of a consensus sigma-54 promoter 5' to the prpBCDE operon suggested that PrpR was...

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