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. Author manuscript; available in PMC: 2011 May 15.
Published in final edited form as: Anal Chem. 2010 May 15;82(10):4078–4088. doi: 10.1021/ac1001383

Figure 1.

Figure 1

Major repeating disaccharide units of the most abundant ECM GAGs found in mammalian cell surface proteoglycans. (A) The backbone of CS is homogeneously composed of [-4)-GlcA-β(1-3)-GalNAc-β(1-]n. (B) The backbone of DS (also known as CS-B) is mostly composed of [-4)-IdoA-α(1-3)-GalNAc-β(1-]n, but it also contains minor amounts of [-4)-GlcA-β(1-3)-GalNAc-β(1-]n. (C) The HS backbone is mostly composed of [-4)-GlcA-β(1-4)-GlcNAc-α(1-]n, but it also contains regions of [-4)-IdoA-α(1-4)-GlcNAc-α(1-]n.