Table 2.
Composition and codon usage of E7 wt and mutant insert sequences
Region | Sequence (Symbol) | G+C content | CpG Total* | O/E ratio†,‡ | UpA Total* | O/E ratio†,‡ | Codon Usage | ||
---|---|---|---|---|---|---|---|---|---|
CAI¶ | ENc | CP Bias | |||||||
1 | Native (WT) | 47.6% | 51 (−) | 0.730 | 62 (−) | 0.742 | 0.685 | 56.5 | −0.043 |
Permuted (P) | 47.6% | 51 (0) | 0.730 | 2 (0) | 0.742 | 0.694 | 55.8 | −0.025 | |
CpG/UpAL (cu) | 47.5% | 0 (−51) | 0 | 19 (−43) | 0.227 | 0.686 | 43.5 | 0.087 | |
Max-U | 50.1% | 47 (−4) | 0.610 | 43 (−19) | 0.573 | 0.708 | 49.6 | 0.328 | |
Min_E | 47.5% | 51 (0) | 0.736 | 62 (0) | 0.735 | 0.748 | 54.3 | −0.131 | |
Min_U | 47.5% | 69 (+18) | 0.992 | 76 (+14) | 0.939 | 0.709 | 58.3 | −0.134 | |
Min_H | 49.8% | 106 (+55) | 1.400 | 79 (+17) | 0.981 | 0.696 | 49.2 | −0.130 | |
2 | Native (WT) | 47.1% | 18 (−) | 0.320 | 48 (−) | 0.695 | 0.743 | 53.2 | 0.015 |
Permuted (P) | 47.6% | 18 (0) | 0.320 | 48 (0) | 0.695 | 0.739 | 49.0 | 0.013 | |
CpG/UpAL (cu) | 48.5% | 0 (−18) | 0 | 48 (0) | 0.214 | 0.739 | 47.2 | 0.118 | |
Max-U | 46.3% | 24 (+6) | 0.440 | 43 (−3) | 0.601 | 0.750 | 46.1 | 0.311 | |
Min-E | 45.7% | 18 (0) | 0.343 | 48 (0) | 0.657 | 0.785 | 53.3 | −0.091 | |
Min-U | 47.4% | 37 (+19) | 0.649 | 50 (+2) | 0.738 | 0.767 | 57.6 | −0.083 | |
Min-H | 47.8% | 68 (+50) | 1.172 | 65 (+15) | 0.970 | 0.715 | 49.7 | −0.085 |
Total number of CpG and UpA dinucleotides in sequence. Changes in numbers between mutated and original WT sequence are indicated in parentheses.
Ratio of observed dinucleotide frequency (O) to that expected based on mononucleotide composition (E) that is, f(CpG)/f(C) × f(G).
Values deliberately changed are shown in red (maximised) and blue (minimised).
Calculated from http://genomes.urv.es/CAIcal/ (Puigbo et al., 2008).