Table 5.
Base triple families—statistics
| Triple super family |
Occurrences |
|||
|---|---|---|---|---|
| No. | Abbreviation | Potential base combination | Observed base combinations | Total instances |
| 1 | cWW | 519 | 132 | 1576 |
| 2 | tWW | 481 | 27 | 98 |
| 3 | cWH | 320 | 15 | 47 |
| 4 | tWH | 323 | 33 | 149 |
| 5 | cWS | 364 | 9 | 13 |
| 6 | tWS | 320 | 4 | 11 |
| 7 | cHW | 219 | 3 | 8 |
| 8 | tHW | 219 | 17 | 150 |
| 9 | cHH | 103 | 0 | 0 |
| 10 | tHH | 240 | 11 | 39 |
| 11 | cHS | 187 | 1 | 3 |
| 12 | tHS | 133 | 7 | 11 |
| 13 | cSW | 192 | 9 | 16 |
| 14 | tSW | 174 | 6 | 9 |
| 15 | cSH | 80 | 5 | 10 |
| 16 | tSH | 60 | 18 | 233 |
| 17 | cSS | 560 | 78 | 915 |
| 18 | tSS | 298 | 46 | 642 |
For each base triple superfamily, the numbers of three-base combinations forming potential (column 3) and observed (column 4) base triples are listed. The total number of observed instances in the non-redundant RNA structure data set used in this study is given in column 5.