. Author manuscript; available in PMC: 2010 Jul 17.

Published in final edited form as: J Mol Biol. 2009 May 6;390(3):457–466. doi: 10.1016/j.jmb.2009.04.074

Table 3.

Glycosidic torsion angles

	Galα(1,3)Gal		Fucα (1,2)Gal

	ϕ	ψ	ϕ	ψ
MOA α-site	46.8°	64.1°	304°	275°
MOA β-site	44.7°	66.7°	295°	252°
MOA γ-site	50.5°	60.2°	291°	237°
PDBid 2OBT¹⁴	54.1°	99.0°	287°	238°
PDBid 2VNO-1¹⁵	66.4°	59.8°	285°	261°
PDBid 2VNO-2¹⁵	72.6°	57.0°	284°	257°
Trisaccharide¹³	56.3°	60.0°	294°	269°

Glycosidic torsion angles (ϕ: O₅-C₁-O-C_x′ and ψ: C₁-O-C_x′-C_x+1′) calculated for the two glycosidic linkages in Galα(1,3)[Fucα(1,2)]Gal. Shown are values for the trisaccharide bound at the three distinct sites in MOA, for the trisaccharide bound to norovirus¹⁴, for the trisaccharide bound at two sites in the Clostridium perfringens CBM¹⁵ and for the unbound trisaccharide¹³.