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Table 3 Mean and standard deviation values (given in parentheses, reported only for datasets with size ≥ 5) for roll, for the ten dinucleotide steps, incorporating Watson-Crick basepairs

From: An ensemble of B-DNA dinucleotide geometries lead to characteristic nucleosomal DNA structure and provide plasticity required for gene expression

  Roll values for dinucleotide steps with
  Minor groove facing the histone octamer Backbone facing the histone octamer Major groove facing the histone octamer
Step (Region I) (Region II) (Region III)
  BI/BI BI/BII BII/BII BI/BI BI/BII BII/BII BI/BI BI/BII BII/BII
AA/TT -0.6 (5.3) -6.5 (6.6) -11.8 (7.6) 2.6 (4.7) -2.5 (4.6) -14.9 NA 7.0 (5.1) 4.8 (5.2) 6.6 NA
  241 67 8 122 21 1 289 55 1
AG/CT 5.4 (4.9) -3.6 (4.6) -6.5 (4.9) 5.2 (5.7) 19.9 NA NA 10.1 (5.5) 8.5 (4.1) NA
  104 119 47 29 2 0 139 38 0
GA/TC 1.1 (3.7) -2.7 (5.7) 0.9 NA 7.1 (5.0) 6.6 (4.2) 8.8 NA 5.0 (4.4) 4.3 (3.7) -4.3 NA
  82 117 2 73 31 3 153 54 2
GG/CC 4.7 (4.3) -2.5 (9.7) -21.7 (20.8) 7.2 (6.3) 5.9 (4.4) 3.0 NA 11.4 (6.4) 11.0 (5.8) NA
  71 150 28 42 16 1 75 13 0
AC/GT -6.5 NA -5.8 NA NA 4.3 (4.0) 15.1 NA NA 4.1 (4.4) 1.9 (6.0) NA
  1 4 0 59 1 0 271 20 0
AT/AT -3.4 (3.4) -3.5 (8.5) NA 1.0 (3.5) -5.5 NA NA 2.5 (5.8) 0.0 (4.7) NA
  109 5 0 110 4 0 139 6 0
GC/GC 0.3 (7.3) -4.8 (5.0) -8.0 (3.6) 6.3 (4.4) 0.6 (3.4) NA 3.6 (3.0) 4.2 NA NA
  32 102 12 29 28 0 26 1 0
CA/TG 6.6 (3.7) -1.2 (8.6) -13.0 (8.4) 7.3 (5.7) 4.0 (5.1) -9.9 (6.2) 12.2 (6.9) 6.6 (6.4) -6.1 (6.0)
  54 65 120 72 82 54 158 99 51
CG/CG 6.0 NA -2.7 (3.8) -4.8 (4.1) NA NA NA 13.7 NA -3.2 NA NA
  3 35 10 0 0 0 1 1 0
TA/TA -1.1 (6.7) -3.7 NA -36.2 NA -2.0 (5.4) -4.7 (4.4) -4.3 NA 8.1 (6.6) 12.5 (7.0) 6.3 NA
  33 2 1 15 16 1 82 29 1
Overall 1.1 (5.8) -3.4 (7.0) -11.9 (11.1) 4.2 (5.5) 2.7 (6.2) -8.8 (7.4) 6.9 (6.3) 6.4 (6.2) -5.6 (6.3)
  730 666 228 551 201 60 1333 316 55
  1. For each dinucleotide step, the 3rd row lists the size of the population for the respective dataset. Based on the side of the DNA facing the histone octamer (minor groove, backbone or major groove), the dinucleotide steps have been divided into three groups. The population in each group has been further sub-divided depending on whether the backbone conformation was BI in both strands, or a mixture of BI and BII, or BII in both strands. Please refer 'Methods' section for details of the classification scheme.