Figure 4
From: Comparative genomics of Geobacter chemotaxis genes reveals diverse signaling function
Putative σ28 and σ54 promoter elements. (A) Putative σ28 promoter regulation sites found upstream of G. sulfurreducens che cluster 1 and the fliC genes of G. sulfurreducens (gsu 3038), G. metallireducens (gsu 0442), and G. uraniireducens (gsu 4096) [97]. 125, 160, 127, and 152 nucleotide bases separate the predicted transcription start sites from the start codons, respectively. (B) Putative σ54 promoter elements upstream of the Geobacter major che gene clusters [51]. For G. metallireducens clusters 1 and 6, G. uraniireducens cluster 3, and G. sulfurreducens cluster 6, the predicted transcription start sites are 50, 33, 24 and 16 nucleotide bases upstream of predicted operon ATG start codons, respectively.