Mapping and Quantification of the Major Oligosaccharide Components of Heparin

Linhardt, Robert J.
Rice, K.G.
Kim, Y.S.
Lohse, D.L.
Wang, H.M.
Loganathan, D.
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Biology , Chemistry and chemical biology , Chemical and biological engineering , Biomedical engineering
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Mapping and Quantification of the Major Oligosaccharide Components of Heparin, R.J. Linhardt, K.G. Rice, Y.S. Kim, D.L. Lohse, H.M. Wang, D. Loganathan," Biochemical Journal, 254, 781-787 (1988).
A new method of determining the oligosaccharide composition of commercial glycosaminoglycan heparin is described in which heparin was first depolymerized using heparin lyase (EC, and then analysed by a single h.p.l.c. step. All 20 of the porcine and bovine heparins examined were found to contain a small number of major oligosaccharide components, which on average comprised 86% of their mass. The five most abundant oligosaccharides have defined chemical structures. Although the relative abundance of oligosaccharides varied, the heparins examined were surprisingly similar. Porcine, bovine, low-Mr, and high and low antithrombin III (ATIII)-affinity heparins, however, each had distinctly different proportions of these major oligosaccharide components. The concentrations of one of these five oligosaccharides, containing a portion of the ATIII binding site, correlated with the anticoagulant activity of the ATIII-affinity-fractionated porcine-mucosal heparins from which it was derived. An additional oligosaccharide of undetermined structure was found in significant quantities in both bovine heparin and high ATIII-affinity porcine-mucosal heparin. The correlation between oligosaccharide concentration and anticoagulant activity suggests that the oligosaccharide is derived from a structural variant of the ATIII-binding site. Finally, for the heparins examined chondroitin/dermatan sulphate formed 0.6-7.4% of their mass.
Biochemical Journal, 254, 781-787
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Rensselaer Polytechnic Institute, Troy, NY
Biochemical Journal