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  • Title: Exploring bacterial heparinase II activities with defined substrates.
    Author: Bohlmann L, Chang CW, Beacham I, von Itzstein M.
    Journal: Chembiochem; 2015 May 26; 16(8):1205-11. PubMed ID: 25907974.
    Abstract:
    Bacterial heparinases that cleave heparan sulfate (HS) and heparin are widely used to generate low-molecular-weight heparins (LMWHs) and to structurally and functionally characterise heparin and HS biomolecules. We provide novel insights into the substrate specificity of heparinase II from two different bacteria: Pedobacter heparinus (formerly Flavobacterium heparinum) and Bacteroides eggerthii. The activity towards various well-defined HS oligosaccharides was investigated by (1) H NMR spectroscopy; this revealed distinct specificities for the two heparinases. Heparinase II from P. heparinus appears to be more active and displays a broader substrate specificity than B. eggerthii heparinase II. Furthermore, HS di- and tetrasaccharides inhibited B. eggerthii heparinase II activity. A better understanding of heparinase substrate specificity will contribute to the production of homogenous LMWHs, provide better characterisation of heparin and HS and assist therapeutic applications.
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