Fig. 5.
Schematic diagram of the biosynthetic pathway of 6-sulfo-sLex located on biantennary mucin glycans. Key glycosyltransferases and sulfotransferase involved in the biosynthesis of 6-sulfo-sLex on extended core 1 and core 2 branch structures are shown. [ppGalNAcTF, peptidyl N-acetylgalactosaminyltransferase; β3Gal-T1, β3-Galactosyltransferase-1; C2GnT-1, β1-6N-acetlyglucosaminyltransferase-1; GlcNAc6ST1, N-acetlyglucosaminyl-6-O-sulfotransferase-1; β4GalT-4, β4-Galactosyltransferase-4; FUT-7, α1–3 Fucosyltransferase-7; ST3Gal-III/IV, α2–3 sialyltransferase-III/IV; β3GlcNAcT-3, β3-N-acetlyglucosaminyltransferase-3; β4GalT, β4-galactosyltransferase]