Table 1.
Representative description of the investigated PSs.
| PS | Functional Groups | Branched/ Linear |
Repeating unit | Side chains |
|---|---|---|---|---|
| ἰ | -OH, -OSO3- |
Linear | D-Gal-4-sulfate,3,6-anhydro-D-Gal-2-sulfate | - |
| κ | -OH, -OSO3- |
Linear | D-Gal-4-sulfate,3,6-anhydro-D-Gal | - |
| λ | -OH, -OSO3- |
Linear | D-Gal-2-sulfate, D-Gal-2,6 disulfate | - |
| P | -OH, -OSO3- -COO- |
Branched | Not finally defined. A disaccharide aldobiouronic acid 3-O-(-d-glucopyranosyluronic acid)-l-galactopyranose and a larger linear composed of the same disaccharide were determined | Not available |
| G | -OH | Branched | β-(1→4)-linked D-mannose | single α-D-galactose at the C6 position of D-mannose at every second mannose |
| LB | -OH | Branched | β-(1→4)-linked mannose | single α-D-galactose at the C6 position of D-mannose and highly unevenly substituted |
| X | -OH -CH2OCOCH3 -COO− |
Branched | β-(1→4)-D-glucopyranose | a trisaccharide composed of d‐mannose (β‐1,4), d‐glucuronic acid (β‐1,2) and d‐mannose, which are attached to alternate glucose residues in the backbone by α‐1,3 linkages. |