Table 5.
Duplication, conditional duplications and losses of cyanobacterial tRNAs.
| tRNA | k1 (Purines) | k2 (Pyrimidines) | R (Transition/Transversion Bias) | No. of sequences Studied |
|---|---|---|---|---|
| Alanine | 1.494 | 1.515 | 0.732 | 258 |
| Arginine | 2.607 | 2.449 | 1.207 | 255 |
| Asparagine | 3.389 | 3.268 | 1.618 | 90 |
| Aspartate | 6.971 | 10.501 | 4.131 | 84 |
| Cysteine | 4.699 | 1.87 | 1.65 | 78 |
| Glutamate | 3.951 | 2.82 | 1.626 | 87 |
| Glutamine | 1.626 | 4.461 | 1.499 | 94 |
| Glycine | 3.2 | 3.426 | 1.631 | 192 |
| Histidine | 2.832 | 2.25 | 1.199 | 68 |
| Isoleucine | 0.231 | 1.512 | 0.39 | 124 |
| Leucine | 1.845 | 2.114 | 0.964 | 343 |
| Lysine | 3.149 | 3.386 | 1.623 | 126 |
| Methionine | 1.805 | 3.28 | 1.231 | 202 |
| Phenylalanine | 1.619 | 1.661 | 0.811 | 89 |
| Proline | 3.708 | 4.158 | 1.825 | 204 |
| Threonine | 3.133 | 3.453 | 1.618 | 202 |
| Tryptophan | 26.77 | 7.30 | 8.409 | 83 |
| Tyrosine | 5.114 | 10.015 | 3.658 | 76 |
| Serine | 0.914 | 1.82 | 0.654 | 271 |
| Valine | 1.959 | 2.169 | 1.018 | 159 |
Highest transition/transversion bias was found in tRNATrp whereas the lowest was found in tRNAIle.