Table 3.

Universal torsion angles for nucleic acids and torsion angles in RNA triple helix of MALAT1_th11

Torsion angles (°)
	Universala		MALAT1_th11b
Alpha (α)	−74.7 ± 9.8		−149.7 ± 18.3 [22]
	81 ± 12.1		−61.2 ± 13.2 [5]
	171 ± 15		147.6 ± 17.9 [6]
Beta (β)	−173.5 ± 13		−157.4 ± 12.1 [8]
	163.8 ± 23		159.6 ± 16.2 [25]
Gamma (γ)	−67.1 ± 12.3		−167.5 ± 3.9 [3]
	52.5 ± 5.7		56.8 ± 10.5 [21]
	179.4 ± 6.4		149 ± 20.4 [9]
Delta (δ)	C2′-endo	C3′-endo	C2′-endo	C3′-endo
	147.3 ± 4.9 (RNA)	81 ± 4.4 (RNA)	145.2 ± 2.8 [2]	79.6 ± 6.1 [31]
	145.2 ± 4 (DNA)	84.8 ± 4.5 (DNA)
Epsilon (ϵ)	−146 ± 8.6		−144.8 ± 17.9 [32]
Zeta (ζ)	−70.8 ± 4.8		−75.6 ± 20.1 [32]
	80.7 ± 14.3
	163.1 ± 0.6
Chi (χ)	C2′-endo purines	C3′-endo purines	C2′-endo purines	C3′-endo purinesc
	−123 ± 24.3 {anti}	−166.7 ± 14 {anti}	−126 {anti} [1]	−172.1 ± 5.6 {anti} [8]
	58.6 ± 12 {syn}	35.6 {syn}
	pyrimidines	pyrimidines	pyrimidines	pyrimidines
	−130.2 ± 18.4 {anti}	−164.3 ± 6.6 {anti}	−120.6 {anti} [1]	−164.2 ± 6.7 {anti} [21]
	63.4 ± 10.2 {syn}

All values represent average ± standard deviation. Torsion angles are defined in Supplementary Figure S8A.

^aUniversal torsion angles were obtained from references (50–52).

^bAll torsion angles were calculated for molecule A using CURVES+ (26,27). The number in brackets indicates number of nucleotides included in calculation.

^cThis value excludes two outliers, A76 and A78, which have an average χ value of 179.5°.