Crystallography of a Lewis-Binding Norovirus, Elucidation of Strain-Specificity to the Polymorphic Human Histo-Blood Group Antigens
Figure 4
(Fo-Fc) omit electron density map of the Lewis y and 3′-sialyl Lewis x tetrasaccharide.
The map was calculated with the final structures of P protein coordinate without corresponding tetrasaccharides and was contoured at 2.0σ (grey) with a 1.6Å radius coverage. Carbon, oxygen and nitrogen atoms are in green, red, and blue, respectively.