Additional file 5.

CUF- Pan-Genomic Codon Correlations. Codon frequencies were collected from 113 Codon Usage Frequency Tables and the significances of correlations (C, 64 × 64) were calculated. (n = 113). The table displays the -log C values. A – sign was added to the -log C value to indicate negative correlations. Significant positive correlations (values > 2) are indicated by bold numbers and gray background, while significant negative correlations (values < -2) are indicated by italic numbers and pink background. The collected data are sorted into 4 × 4 × 3 × 3 = 144 different subgroups corresponding to the 4 × 4 codon letter combinations and the 3 × 3 codon positions (red letters).

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Biro Theoretical Biology and Medical Modelling 2008 5:16   doi:10.1186/1742-4682-5-16