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| Sequence | # of structures | Loop (%) | A-form (%) |
|---|---|---|---|
| UACG | 3674 | 9 | 37 |
| UCCG | 6673 | 3 | 67 |
| UGCG | 5872 | 0 | 61 |
| UUCG | 3969 | 15 | 17 |
| GAAA | 12 908 | 16 | 8 |
| GAGA | 7596 | 10 | 27 |
| GCAA | 7835 | 14 | 23 |
| GCGA | 10 946 | 7 | 17 |
| GGAA | 12 395 | 3 | 24 |
| GGGA | 16 764 | 0.7 | 46 |
| GUAA | 8100 | 6 | 15 |
| GUGA | 11 432 | 10 | 10 |
The fraction of loops and A-form helices is calculated considering all structures with 
RMSD < 0.6 from the consensus loop/ideal helix.
