Fig. 1: The N-glycan structures attached to the chlorovirus glycoproteins used in this study.
From: Carbohydrate-mediated interactions between chloroviruses and the immune system

The left panel reports the three different viruses along with the class they belong to (upper part of each individual panel). On the right, the N-glycan structures of PBCV-1 antigenic variants are reported along with their antigenic classification (upper part of each individual panel). Note that PBCV-1 glycoprotein has 4 N-linked sites, none in a typical consensus sequon13,16,18,20. Dotted linkages in PBCV-1 and P91 N-glycans indicate that certain monosaccharides are non-stoichiometric substituents. The red box in the PBCV-1 N-glycan encloses the four monosaccharide residues conserved in all the chloroviruses studied to date. In ATCV-1, the methyl groups are enclosed in brackets because they are nonstoichiometric substituents.