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Figure 1.
Figure 1
Schematic depiction of the primary sequence of the antigenic GPA glycopeptide. (a) The
polypeptide sequence of the N-terminus depicting the amino-acid polymorphisms that
differentiate the M and N antigens. O-Glycosylated residues are marked with asterisks. (b)
Structures of the O-glycans at positions 2, 3 and 4 that contribute to MN antigenicity.
The sugars are abbreviated as follows: Gal, galactose; GalNAc, N-acetylgalactosamine;
NANA, N-acetylneuraminic (sialic) acid.
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