Internal promoter P2 of the histidine operon of Salmonella typhimurium.
The histidine operon internal promoter P2 allows initiation of transcription at a rate up to one-third that of the wild-type his operon.
D006639:Histidine; D009154:Mutation; D009876:Operon; D012486:Salmonella typhimurium / Q000201:enzymology; D014158:Transcription, Genetic
D006639:Histidine