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. 2008 Mar 5;1(3):183–197. doi: 10.1038/mi.2008.5

Table 2. Common O-linked oligosaccharide structures on mucins.

Nomenclature Structure
Core type
 Core 1 -Galβ1-3GalNAcα1-Ser/Thr
 Core 2 -Galβ1-3(-GlcNAcβ1-6)GalNAcα1-Ser/Thr
 Core 3 -GlcNAcβ1-3GalNAcα1-Ser/Thr
 Core 4 -GlcNAcβ1-3(GlcNAcβ1-6)GalNAcα1-Ser/Thr
N-Acetyllactosamine elongation type
 Type 1 -Galβ1-3GlcNAcβ1-
 Type 2 -Galβ1-4GlcNAcβ1-
Branching
 i-antigen -Galβ1-4GlcNAcβ1-3Galβ1- (unbranched)
 I-antigen -Galβ1-4GlcNAcβ1-3(-Galβ1-4GlcNAcβ1-6)Galβ1- (branched)
Terminal structures
 Blood group H Fucα1-2Galβ1-
 Blood group A Fucα1-2(GalNAcα1-3)Galβ1-
 Blood group B Fucα1-2(Galα1-3)Galβ1-
 Terminal structures (Type 1 based)
 Lewis a (Lea) Galβ1-3(Fucα1-4)GlcNAcβ1-
 Lewis b (Leb) Fucα1-2Galβ1-3(Fucα1-4)GlcNAcβ1-(includes H)
 Sialyl-Lea NeuAc(α2-3)Galβ1-3(Fucα1-4)GlcNAcβ1-
 Terminal structures (Type 2 based)
 Lewis x (Lex) Galβ1-4(Fucα1-3)GlcNAcβ1-
 Lewis y (Ley) Fucα1-2Galβ1-4(Fucα1-3)GlcNAcβ1-(includes H)
 Sialyl-Lex NeuAcα2-3 Galβ1-4(Fucα1-3)GlcNAcβ1-
Sulfation
 3 Sulfation HSO3-3Galβ1-
 6 Sulfation HSO3-6GlcNAcβ1-
Examples of combined epitopes
 H-type 1 Fucα1-2Galβ1-3GlcNAcβ1-
 Sialylated type 2 NeuAcα2-3Galβ1-4GlcNAcβ1-