Table 2.

Characterization of the helix symmetry of GAGs polysaccharides in the solid-state.

Glycosaminoglycans	Structure of the Main Repeating Disaccharides	Helix Symmetry	Ref.
Hyaluronan	-4)-β-d-GlcpA-(1-3)-β-d-GlcpNAc-(1-	21, 32, 43	[72,73,74]
Chondroitin-4-sulfate	-4)-β-d-GlcpA-(1-3)-β-d-GalpNAc(4S)-(1-	21, 32	[75,76,77]
Chondroitin-6-sulfate	-4)-β-d-GlcpA-(1-3)-β-d-GalpNAc(6S)-(1-	21, 32, 83
Dermatan sulfate	-4)-α-l-IdopA-(1-3)-β-d-GalpNAc(4S)-(1-	21, 32, 83	[78]
Heparin	-4)-α-l-IdopA(2S)-(1-4)-α-d-GlcpNS(6S)-(1	(Na+) 21
Heparan sulfate	-4)-β-d-GlcpA-(1-4)-α-d-GlcpNAc-(1-	21	[79]
Keratan sulfate	-3)-β-d-Galp-(1-4)-β-d-GlcpNAc(6S)-(1-	21	[80]