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Table 5 Mean and standard deviation values (given in parentheses, reported only for datasets with size ≥ 5) for twist for the ten dinucleotide steps containing Watson-Crick basepairs.
| Twist | |||||||
|---|---|---|---|---|---|---|---|
| RNA | Free | Complex | HTH | ||||
| Dinucleotide Sequence* | A-like (Z p > 1.3 Å) | B-like (Z p ≤ 0.8 Å) | All | Excl. TEH† | All | Excl. TC ‡ | |
| AA/TT | 31.1 (3.3) | NA | 36.1 (3.9) | 30.8 (7.3) | 34.4 (3.8) | 33.9 (6.0) | 35.1 (3.5) |
| AG/CT | 31.0 (3.3) | 31.8 NA | 32.5 (7.0) | 33.4 (5.1) | 34.1 (4.5) | 33.0 (5.6) | 33.5 (4.0) |
| GA/TC | 31.5 (2.6) | 24.1 NA | 37.7 (3.4) | 33.9 (5.0) | 35.0 (3.6) | 34.8 (4.3) | 34.9 (4.4) |
| GG/CC | 30.6 (2.2) | 30.5 (3.2) | 31.2 (5.3) | 33.4 (4.0) | 33.5 (4.2) | 32.3 (4.4) | 32.4 (4.5) |
| AC/GT | 31.0 (2.7) | 33.1 (1.4) | 33.6 (5.7) | 30.9 (3.7) | 31.2 (3.2) | 30.7 (4.1) | 30.8 (4.0) |
| AT/AT | 31.1 (1.7) | 33.6 NA | 33.5 (3.9) | 28.4 (6.5) | 32.3 (3.6) | 31.5 (4.0) | 32.0 (2.8) |
| GC/GC | 32.4 (5.6) | 33.0 (2.7) | 38.2 (2.8) | 32.6 (5.7) | 33.2 (5.7) | 32.5 (4.7) | 32.5 (4.9) |
| CA/TG (BI) | 31.2 (2.9) | 29.1 (2.6) | 36.5 NA | 33.9 (4.9) | 33.5 (3.7) | 33.0 (5.0) | 33.2 (4.3) |
| CA/TG (BII) | NA | NA | 49.1 (2.4) | 39.3 (5.9) | 39.5 (6.0) | 38.0 (5.2) | 38.2 (4.5) |
| CG/CG | 29.7 (2.1) | 29.3 (3.7) | 32.2 (5.6) | 36.0 (6.4) | 37.2 (3.0) | 35.0 (5.8) | 35.1 (5.5) |
| TA/TA | 30.0 (1.1) | 27.7 NA | 34.7 (6.4) | 29.3 (9.1) | 35.1 (7.3) | 34.9 (7.6) | 36.4 (6.0) |
| Overall | 31.1 (3.4) | 30.6 (3.5) | 35.8 (5.9) | 32.4 (6.4) | 34.1 (4.8) | 33.3 (5.5) | 33.8 (4.7) |
| Fibre-Model | 30.8 | 36.0 | |||||
