Table 2 Proposed acidic oligosaccharide structures identified in human intestinal mucins by nano-ESI MS/MS

I, ileum; C, cecum; T, transverse colon; S, sigmoid colon; R, rectum; a, structures recovered from donor 2; b, structures recovered from donor 1. The upper branch of the oligosaccharides is indicated in bold.

ICTSR
Sequence/composition of oligosaccharide alditols[M−H]ababababab
Oligosaccharides with one NeuAc residue
NeuAc→6GalNAc-ol513++++++++++
 Gal→3(NeuAc6)GalNAc-ol675++++++++
 (NeuAc→3)Gal→3GalNAc-ol675++
 GalNAc→3(NeuAc6)GalNAc-ol716++++++++++
 GlcNAc→3(NeuAc6)GalNAc-ol716++++++++++
 (Fuc→2)Gal→3(NeuAc6)GalNAc-ol821++
 Gal→3GlcNAc→3(NeuAc6)GalNAc-ol878++++++++++
 (NeuAc→3)Gal→3(GlcNAc6)GalNAc-ol878+
 (NeuAc→3)Gal→4GlcNAc→3GalNAc-ol878+
 GlcNAc→3Gal→3(NeuAc6)GalNAc-ol878++++++++
 Gal→3(Fuc→4)GlcNAc→3(NeuAc6)GalNAc-ol1024++++++++++
 Gal→4(Fuc→3)GlcNAc→3(NeuAc6)GalNAc-ol1024++++++++++
 (NeuAc→3)Gal→4(Fuc→3)GlcNAc→3GalNAc-ol1024+
 HexNAc→3Gal→4GlcNAc→3(NeuAc6)GalNAc-ol1081++
 GalNAc→4(NeuAc→3)Gal→4GlcNAc→3GalNAc-ol1081++++++
 GalNAc→4(NeuAc→3)Gal→3GlcNAc→3GalNAc-ol1081++++++
 (Fuc→2)Gal→3(Fuc→4)GlcNAc→3(NeuAc6)GalNAc-ol1170+++++
 HexNAc→3Gal→3(Fuc→4)GlcNAc→3(NeuAc6)GalNAc-ol1227+++++
 HexNAc→3(Fuc→2)Gal→3GlcNAc→3(NeuAc6)GalNAc-ol1227++
 (NeuAc→3)Gal→4GlcNAc→3Gal→GlcNAc→3GalNAc-ol1243++
 HexNAc→3(Fuc→2)Gal→3(Fuc→4)GlcNAc→3(NeuAc6)GalNAc-ol1373++++
 NeuAc→3Gal→4(Fuc→3)GlcNAc→3Gal→3[Gal4(Fuc3)GlcNAc6]GalNAc-ol1697++++
Oligosaccharides wih one sulphate residue
 (SO3)3Gal→4GlcNAc→3GalNAc-ol667+++++
 Gal→4(SO3)6GlcNAc→3GalNAc-ol667++++++
  (Fuc→2)Gal→4(SO3)6GlcNAc→3GalNAc-ol813+++
 (SO3)3Gal→4(Fuc→3)GlcNAc→3GalNAc-ol813++++++++
 Gal→3[(SO3)3Gal4GlcNAc6]GalNAc-ol829+++++
 Gal→3[Gal4(SO3)6GlcNAc6]GalNAc-ol829+++
 (SO3)3Gal→4GlcNAc→3Gal→3GalNAc-ol829+++
 Gal→3[(SO3)3Gal4(Fuc3)GlcNAc6]GalNAc-ol975++++++
 (SO3)3Gal→4(Fuc→3)GlcNAc→3Gal→3GalNAc-ol975+++++
 (SO3)3Gal→4(Fuc→3)GlcNAc→3Gal→3[Gal4(Fuc3)GlcNAc6]GalNAc-ol1486+
Oligosaccharides with two acidic residues
 (SO3)3Gal→4GlcNAc→3(NeuAc6)GalNAc-ol958++++++
 (NeuAc→3)Gal→3(NeuAc6)GalNAc-ol966++++++++
 (SO3)3Gal→3[(SO3)3Gal4(Fuc3)GlcNAc6]GalNAc-ol1055+
 (SO3)3Gal→4(Fuc→3)GlcNAc→3(NeuAc6)GalNAc-ol1104++++++++++
 (NeuAc→3)Gal→3[(SO3)3Gal4GlcNAc6]GalNAc-ol1120+++
 (NeuAc→3)Gal→4GlcNAc→3(NeuAc6)GalNAc-ol1169+++++++++
 (SO3)3Gal→4(Fuc→3)GlcNAc→3Gal→3(NeuAc6)GalNAc-ol1266++
 (NeuAc→3)Gal→4(Fuc→3)GlcNAc→3(NeuAc6)GalNAc-ol1315++++++++
 (SO3)3Gal→4GlcNAc→3Gal→4GlcNAc→3(NeuAc6)GalNAc-ol1323++
 GalNAc→4(NeuAc→3)Gal→4GlcNAc→3(NeuAc6)GalNAc-ol1372+++++++
 GalNAc→4(NeuAc→3)Gal→3GlcNAc→3(NeuAc6)GalNAc-ol1372+++++++
 (SO3)3Gal→4GlcNAc→3Gal→3[(SO3)3Gal4(Fuc3)GlcNAc6]GalNAc-ol1420+
 (SO3)3Gal→4(Fuc→3)GlcNAc→3Gal→4GlcNAc→3(NeuAc6)GalNAc-ol1469+++++
 3 Gal, 2 HexNac, NeuAc, SO3, GalNAc-ol1485+
 (SO3)3Gal→4(Fuc→3)GlcNAc→3Gal→3[(SO3)3Gal4(Fuc3)GlcNAc6]GalNAc-ol1566+++++
 (SO3)3Gal→4(Fuc→3)GlcNAc→3Gal→4(Fuc→3)GlcNAc→3(NeuAc6)GalNAc-ol1615++++++++
 2 Gal, 2 HexNAc, Fuc, 2 NeuAc, GalNAc-ol1680+
 2Gal, 2 HexNAc, 2 Fuc, 2 NeuAc, GalNAc-ol1826+