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Part of the nonasaccharide-binding site. The two crystal forms are superimposed. The complexed crystal form is coloured blue, the uncomplexed crystal form is green and the nonasaccharide is red. The figure illustrates that the nonasaccharide is wedged into the structure, forcing apart the structure of the complexed crystal form. The figure was produced using O (Jones et al., 1991 ▶).
