Figure 5From: Characterization of relationships between transcriptional units and operon structures in Bacillus subtilis and Escherichia coliFunctional associations between adjacent gene pairs. The upper figures indicate the functional associations in B. subtilis and the lower represent E. coli. The proportion of gene pairs that have the functional categories shown on the x and y axis is represented by a box with red color. When the color is deeper, it indicates the proportion is increasing.Back to article page