Table 1 Proposed neutral 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+Na]+ababababab
GlcNAc→3GalNAc-ol449++++++++++
GalNAc→3GalNAc-ol449++++++++++
Gal→3GlcNAc→3GalNAc-ol611++++++++++
Gal→3(GlcNAc6)GalNAc-ol611++++++++++
GlcNAc→3Gal→3GalNAc-ol611++++++++++
Fuc→2Gal→3GalNAc-ol554++
Gal→3(Fuc→4)GlcNAc→3GalNAc-ol757++++++++++
Gal→3(Gal4GlcNAc6)GalNAc-ol773+++++++
Gal→4GlcNAc→3Gal→3→GalNAc-ol773++++
HexNAc→Gal→3GlcNAc→3GalNAc-ol814++++++++++
HexNAc→3Gal→3(GlcNAc6)GalNAc-ol814++++++++++
Gal→4GlcNAc→3(GlcNAc6)GalNAc-ol814+++++
(Fuc→2)Gal→3(Fuc→4)GlcNAc→3GalNAc-ol903++++
(Fuc→)GlcNAc→3(Fuc→2)Gal→3GalNAc-ol903+
Gal→4GlcNAc→3(Fuc→2)Gal→3GalNAc-ol919++
(Fuc→2)Gal→3(Gal4GlcNAc6)GalNAc-ol919++
2 Gal, GlcNAc, Fuc, GalNAc-ol919+++++++
HexNAc→3Gal→3(Fuc→4)GlcNAc→3GalNAc-ol960++++
Gal, 2HexNAc, Fuc, GalNAc-ol960++++++
Gal, 2GlcNAc, Fuc, GalNAc-ol (core 2)960+
Gal, 2GlcNAc, Fuc, GalNAc-ol (core 4)960+++
2 Gal, 2 HexNAc, GalNAc-ol976++++++++++
HexNAc→3Gal→4GlcNAc→3(GlcNAc6)GalNAc-ol1017+
Gal→3[(Fuc2)Gal3(Fuc4)GlcNAc6]GalNAc-ol1065+
(Fuc→2)Gal→3[(Fuc2)Gal4GlcNAc6]GalNAc-ol1065+
2 Gal, HexNAc, 2 Fuc, GalNAc-ol1065++
HexNAc→3(Fuc→2)Gal→3(Fuc→4)GlcNAc→3GalNAc-ol1106++++
2 Gal, 2 HexNAc, Fuc, GalNAc-ol1122+++++
Gal, 3 HexNAc, Fuc, GalNAc-ol1163+
HexNAc→3Gal→3(Fuc→4)GlcNAc→3(GlcNAc6)GalNAc-ol1163++
2 Gal, 3 HexNAc, GalNAc-ol1179++++
2 Gal, HexNAc, 3 Fuc, GalNAc-ol1211+
2 Gal,2 HexNAc, 2 Fuc, GalNAc-ol1268++++++
(Fuc→2)Gal→3(Fuc→4)GlcNAc→3(Gal4GlcNAc6)GalNAc-ol1268++
3 Gal, 2 HexNAc, Fuc, GalNAc-ol1284++++
HexNAc→3(Fuc→2)Gal→3(Fuc→4)GlcNAc→3(GlcNAc6)GalNAc-ol1309++
2 Gal, 3 HexNAc, 1 Fuc, GalNAc-ol1325++
2 Gal, 2 HexNAc, 3 Fuc, GalNAc-ol1414++
3 Gal, 2 HexNAc, 2 Fuc, GalNAc-ol1430++
2 Gal, 3 HexNAc, 2 Fuc, GalNAc-ol1471++
2 Gal, 4 HexNAc, 1 Fuc, GalNAc-ol1528++
3 Gal, 2 HexNAc, 3 Fuc, GalNAc-ol1576++
2 Gal, 3 HexNAc, 3 Fuc, GalNAc-ol1617++
2 Gal, 4 HexNAc, 2 Fuc, GalNAc-ol1674++
3 Gal, 3 HexNAc, 3 Fuc, GalNAc-ol1779++
2 Gal, 4 HexNAc, 3 Fuc, GalNAc-ol1820+