Table 1:

Mammalian sugar-nucleotide donors and their glycoconjugates form.

Monosaccharide	Abbreviation	Symbol	Glycoconjugate
Glucose	Glu		Glycolipid
Galactose	Gal		N-glycan, O-glycan, Glycolipid
N-acetylglucosamine	GlcNAc		Glycosaminoglycans, N-glycans, O-glycans, Glycolipids
N-acetylgalactosamine	GalNAc		Glycosaminoglycans, N-glycans, O-glycans, Glycolipids, GPI-anchor
Xylose	Xyl		Glyoscaminoglycans (initiating site)
Glucoronate*	GlcA		Glycosaminoglycans
Mannose	Man		N-glycan, Glycolipid, C- and O-linked mannosylation*
Fucose	Fuc		N-glycan, O-glycan, Glycolipids, O-fucosylation**
Sialic Acid	Sia		N-glycan, O-glycan, Glycolipids

^*Iduronic acid (IdoA), an important GAG component is an epimerized form of GlcA.

^**Rare glycoconjugates