Figure 1.

Sequence alignment and evaluation of potential modification sites for different IgG subclasses from different host species. Sequences were sourced from the UniProt database and aligned with respect to the N-linked glycosylation sites (gray background). The glutamine at position −2 (black background) is preserved across the majority of IgG subtypes and species for which sequence information was available. *Potential conflict with additional glutamine marked in red; Fl = Florida.