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. Author manuscript; available in PMC: 2021 Aug 1.
Published in final edited form as: Mol Omics. 2020 Apr 20;16(4):364–376. doi: 10.1039/d0mo00019a

Fig. 1.

Fig. 1.

Structure of key GAGs. A, Hyaluronic acid (HA) disaccharide units, HA chains. B, Heparan sulfate (HS) disaccharide unit, HS chains, and linker tetrasaccharide structure. C, Chondroitin sulfate (CS) sulfate disaccharide unit, CS chains, and linker tetrasaccharide structure. D, Chondroitin, and dermatan sulfate (CS/DS) disaccharide unit, CS/DS chains, and linker tetrasaccharide structure. E, Keratan sulfate (KS) disaccharide units, KS chains. Abbreviations: Fuc, Fucose; GlcA, Glucuronic acid; IdoA, Iduronic acid; GalNAc, N-acetylgalactosamine; GlcNAc N-acetylglucosamine; Sia, Sialic Acid; Xyl, Xylose; Ser, Serine; Ac, Acetyl; S, sulfate (SO3H).