Table 2 Mean and standard deviation values (given in parentheses, reported only for datasets with size ≥ 5) for Z _p for the ten dinucleotide steps containing Watson-Crick basepairs.

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

2.1 (0.2)

NA

-0.5 (0.4)

-0.5 (0.5)

-0.4 (0.4)

-0.4 (0.5)

-0.4 (0.4)

AG/CT

2.2 (0.3)

2.2 NA

-0.6 (0.6)

0.0 (0.8)

-0.3 (0.6)

0.0 (0.6)

-0.0 (0.6)

GA/TC

2.4 (0.4)

2.1 NA

-0.2 (0.4)

-0.1 (0.7)

-0.3 (0.5)

-0.2 (0.5)

-0.1 (0.5)

GG/CC

2.4 (0.2)

2.2 (0.3)

-0.8 (0.4)

0.1 (0.7)

-0.1 (0.6)

0.4 (0.9)

0.3 (0.9)

AC/GT

2.1 (0.3)

2.1 (0.3)

-0.4 (0.2)

-0.0 (0.5)

-0.1 (0.4)

0.0 (0.6)

0.1 (0.6)

AT/AT

2.0 (0.2)

2.3 NA

-0.3 (0.5)

-0.0 (0.6)

-0.1 (0.4)

-0.1 (0.5)

-0.1 (0.5)

GC/GC

2.2 (0.2)

2.0 (0.3)

-0.3 (0.5)

-0.3 (0.6)

-0.3 (0.5)

-0.0 (0.5)

0.0 (0.5)

CA/TG (BI)

2.2 (0.4)

2.0 (0.3)

-0.4 NA

-0.0 (0.8)

-0.2 (0.5)

-0.1 (0.5)

-0.1 (0.5)

CA/TG (BII)

NA

NA

-0.9 (0.3)

-0.4 (0.5)

-0.4 (0.5)

-0.4 (0.5)

-0.4 (0.5)

CG/CG

2.4 (0.3)

2.1 (0.3)

-0.5 (0.5)

-0.0 (0.8)

0.1 (0.6)

-0.1 (0.6)

-0.1 (0.6)

TA/TA

2.1 (0.2)

1.9 NA

-0.6 (0.7)

-0.2 (0.6)

-0.2 (0.5)

-0.2 (0.6)

-0.2 (0.5)

Overall

2.2 (0.3)

2.1 (0.3)

-0.5 (0.5)

-0.1 (0.7)

-0.2 (0.5)

-0.1 (0.6)

-0.1 (0.6)

Fibre-Model

2.5

-0.6