Figure 2
From: Detection of prokaryotic promoters from the genomic distribution of hexanucleotide pairs
Specific examples of genome-derived distribution matrices generated for characterized principal σ factor-dependent promoter sequences and non-regulatory sequences from three different organisms. (A) E. coli, (B) B. subtilis, and (C) M. tuberculosis. Gene names and experimentally identified promoter sequences, as reported in the literature, are indicated above each matrix. The first row corresponds to characterized promoter sequences closely resembling to the proposed consensus. The second row presents experimentally identified promoters containing more mismatches relative to the proposed consensus. The last row shows distribution matrices of hexanucleotide pairs with approximately 3 mismatches position per box, which were extracted from the middle of the rpoB coding sequence (bona fide non-promoter sequences).