Figure 2
From: Genome wide identification of regulatory motifs in Bacillus subtilis
Histogram of regulon sizes. A regulon for a factor in (a) is defined as the set of our predicted operons that have immediately upstream a site documented in the DBTBS database to be recognized by the factor. A regulon for a weight matrix in (b) and (c) is defined as the set of our predicted operons that have immediately upstream a match to the matrix. The matrices in (b) were derived from the experimental verified sites in the DBTBS database. The matrices in (c) were derived from our clusters of over-represented dimers. The several regulons in (b) (σA, σG, σK, ComK, GltC, GltR, Hpr, LevR, and SpoOA) and the three regulons in (c) with more than 400 members are discussed further in the text.