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. 1999 Apr 13;96(8):4246–4251. doi: 10.1073/pnas.96.8.4246

Table 1.

Selection of geometrical data in CA26, molecules A and B

Parameter In helical part
At band-flip sites
Max Min Mean Max Min Mean
Glycosidic angle, °a C(1)n+1–O(4)n–C(4)n 120.7 114.6 118.3
Virtual distance, Åb O(4)n⋯O(4)n−1 4.56 4.11 4.39 4.79 4.48 4.65
Virtual angles, °c O(4)n⋯O(4)n+1⋯O(4)n+2 136.7 117.9 126.4 149.8 138.7 143.6
Hydrogen bonds, Å O(3)n⋯O(2)n+1 (interglucose) 3.10 2.65 2.86
O(3)n⋯O(6)n+1 (at band-flips) 2.78 2.66 2.73
O(3)n⋯O(5)n+1 3.12 3.03 3.07
(−)gauche-O(6)n⋯O(2)n+6d 3.42 3.09 3.27
(−)gauche-O(6)n⋯O(3)n+6e (between turns) 3.27 2.65 2.85
(+)gauche-O(6)n⋯O(2)n+6f 2.97 2.66 2.75
(+)gauche-O(6)n⋯O(3)n+6g 3.28 3.09 3.23
Torsion angles, °h φ, O(5)n–C(1)n–O(4)n−1–C(4)n−1 115.3 91.1 103.6 90.2 86.4 88.1
Torsion angles, °h ψ, C(1)n–O(4)n−1–C(4)n−1–C(3)n−1 131.4 97.4 115.3 −51.7 −45.8 −48.4
Cremer–Pople glucose puckering amplitude Q, Å 0.58 0.52 0.54 0.58i 0.53i 0.54i
angle θ, ° 9.8 1.0 4.6 14.7i 1.1i 8.3i
a

For all glucoses because these angles are not different at band-flips. 

b

Helical parts: n from 3 to 13 and 16 to 26. 

c

Helical parts: n from 2 to 11 and 15 to 24. 

d–gHelical parts as in b; averaged over different number of glucoses: d, 11; e, 10; f, 9; and g, 2. 

h

Defined as in footnote ††. 

i

For glucoses G26–G1 and G13–G14.