Figure 1From: Global features of sequences of bacterial chromosomes, plasmids and phages revealed by analysis of oligonucleotide usage patternsTetranucleotide usage patterns of E. coli K12, P. putida KT2440, B. subtilis 168 and A. pernix K1. The deviation Δ w of observed from expected counts defined by eq. 6 is shown for all 256 tetranucleotides (16 × 16 cells) by color code (right bar). Tetranucleotides are grouped into 39 classes of equivalent structural features [13] and sorted by decreasing base stacking energy row-by-row starting at the upper left corner (class 39). Within a class members are sorted alphabetically.Back to article page