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Table 4 Dinucleotide step parameters values for RR steps in RNA helices

From: Sequence dependent variations in RNA duplex are related to non-canonical hydrogen bond interactions in dinucleotide steps

Step

Dataset

(n)

Tilt

Roll

Twist

Shift

Slide

Rise

Prop.av

Cup

Zp

AA/UU

free-RNA

1.1

7.6

32.6

0.1

-1.1

3.3

-14.3

2.3

2.0

 

(40)

(1.3)

(3.1)

(2.1)

(0.3)

(0.3)

(0.1)

(3.8)

(6.4)

(0.3)

 

non-cont

0.9

6.8

30.5

0.1

-1.3

3.3

-10.6

2.0

2.2

(30)

(3.1)

(5.7)

(2.9)

(0.4)

(0.5)

(0.2)

(6.9)

(11.7)

(0.4)

 

cont

0.8

6.7

30.7

-0.0

-1.5

3.3

-10.0

4.1

2.2

(52)

(2.6)

(5.2)

(3.5)

(0.6)

(0.4)

(0.1)

(6.6)

(9.9)

(0.3)

AG/CU

free-RNA

0.4

9.7

32.2

0.1

-1.4

3.3

-12.8

-3.8

2.2

 

(82)

(2.0)

(3.0)

(2.4)

(0.4)

(0.4)

(0.1)

(3.7)

(6.2)

(0.2)

 

non-cont

0.6

8.4

31.4

0.2

-1.6

3.3

-10.6

-2.8

2.3

(107)

(2.7)

(4.2)

(3.3)

(0.5)

(0.4)

(0.1)

(5.3)

(8.6)

(0.3)

 

cont

1.3

8.0

30.6

0.2

-1.7

3.3

-9.0

-2.2

2.3

(172)

(2.6)

(4.3)

(3.4)

(0.5)

(0.5)

(0.1)

(5.5)

(10.2)

(0.3)

GA/UC

free-RNA

0.2

6.4

31.5

-0.1

-1.5

3.3

-11.2

1.5

2.2

 

(68)

(2.0)

(4.1)

(2.3)

(0.4)

(0.4)

(0.1)

(5.5)

(7.1)

(0.3)

 

non-cont

0.7

6.1

31.1

-0.0

-1.7

3.3

-8.9

1.4

2.4

(116)

(2.9)

(5.0)

(3.2)

(0.5)

(0.4)

(0.1)

(6.0)

(10.1)

(0.4)

 

cont

0.3

5.9

30.8

0.0

-1.7

3.3

-8.9

1.2

2.4

(167)

(2.5)

(5.0)

(3.3)

(0.5)

(0.4)

(0.1)

(5.6)

(10.3)

(0.3)

GG/CC

free-RNA

0.5

8.0

31.2

0.1

-1.8

3.3

-10.5

-3.3

2.4

 

(157)

(2.6)

(3.7)

(2.7)

(0.5)

(0.4)

(0.1)

(4.9)

(8.3)

(0.3)

 

non-cont

0.7

7.7

31.0

0.2

-1.9

3.3

-8.7

-4.5

2.5

(317)

(2.8)

(4.2)

(3.0)

(0.5)

(0.4)

(0.1)

(4.7)

(9.5)

(0.3)

 

cont

1.1

7.3

31.0

0.2

-1.9

3.3

-8.5

-5.0

2.5

(488)

(2.7)

(4.1)

(3.2)

(0.5)

(0.4)

(0.1)

(5.6)

(9.8)

(0.3)

RR

free-RNA

0.5

8.0

31.6

0.1

-1.5

3.3

-11.6

-1.8

2.2

 

(347)

(2.2)

(3.7)

(2.5)

(0.4)

(0.4)

(0.1)

(4.8)

(7.7)

(0.3)

 

non-cont

0.7

7.4

31.1

0.1

-1.8

3.3

-9.2

-2.7

2.4

(570)

(2.8)

(4.5)

(3.1)

(0.5)

(0.4)

(0.1)

(5.3)

(9.9)

(0.3)

 

cont

1.0

7.1

30.9

0.2

-1.8

3.3

-8.8

-2.7

2.4

(879)

(2.6)

(4.4)

(3.3)

(0.5)

(0.4)

(0.1)

(5.6)

(10.4)

(0.3)

ModelRNA

 

-0.4

13.1

30.0

0.0

-1.2

3.3

-10.4

0.0

2.2

  1. Mean values and SD of dinucleotide step parameters for RR steps along with average propeller-twist (Prop.av), Cup and Zp in free-RNA, protein non-contacting (non-cont) and contacting (cont) datasets. Frequency of occurrence of each dinucleotide step and standard deviation of the parameter values are given in parenthesis. Values of Tilt, Roll, Twist, Cup and Prop.av are in degrees (°), while Shift, Slide, Rise and Zp are in Angstroms (Å).