FIG. 3.

Promoter sequences of hrcA, grpE, and other heat shock genes in A. tumefaciens. An inverted repeat in the hrcA promoter is shown by arrows. The start sites of heat-inducible transcripts are underlined. Bases found in at least five of six possible RpoH-dependent promoters are indicated in upper case. Consensus deduced from these sequences and those of the E. coli ς³² and ς⁷⁰ promoters are shown for comparison. References for the sequences are as follows: groESL, 34; dnaKJ, 35; rpoH and clpP, 19a; E. coli ς³² consensus, 10; E. coli ς⁷⁰ consensus, 25.