The O-glycoproteomes of VZV, HCMV, and EBV. A graphical depiction of identified O-linked glycosylation sites with respect to known structural features of viral glycoproteins (59, 60, 67, 72, 76, 96, 112, 120, 126–128). Domains of gH are labeled with Roman numerals. The O-glycosylation site marked with an asterisk can potentially have a slightly different location because of site ambiguity. Sites mapping to secreted proteins/regions facing the lumenal side of the secretory pathway (>98.5% of glycopeptides) are shown (see all identified glycopeptides in supplemental Data Set S1). A, VZV, all identical tandem repeats are shown occupied in VZV gC. B, HCMV. C, EBV.