FIG. 4.

Activation of the tuaA transcription by PhoP∼P. (A) Physical map of the tuaA promoter region. The horizontal line represents the DNA fragment used for template. The bent arrow indicates the tuaA transcription direction. +1 marks the transcriptional start site. The expected transcript size of the promoter is indicated in parentheses. (B) In vitro transcription of tuaA promoter. All reactions and sample analysis are as described for Fig. 1. Abbreviations are the same as in the legend for Fig. 1.