Skip to main content

Advertisement

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.

From: Small local variations in B-form DNA lead to a large variety of global geometries which can accommodate most DNA-binding protein motifs

  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     
  1. †TEH – TBP, Endonuclease and Hyperthermophile chromosomal protein SAC7D containing structures (excluded)
  2. ‡TC – TBP and CAP containing structures (excluded)
  3. The other specifications are as detailed in the caption to table 1.