Interactions of low-molecular-weight semi-synthetic sulfated heparins with human leukocyte elastase and human Cathepsin G.

作者: Claudia Sissi , Lorena Lucatello , Annamaria Naggi , Giangiacomo Torri , Manlio Palumbo

DOI: 10.1016/J.BCP.2005.10.027

关键词:

摘要: Semi-synthetic low-molecular-weight heparin samples (LMWHs), having homogeneous degree of polymerization and saccharide backbone, but differing in the number location sulfate groups, were investigated their ability to interfere with pharmacologically relevant targets human leukocyte elastase (EL) Cathepsin G (CatG). Spectroscopic studies performed for a quantitative evaluation enzyme-inhibitor dissociation constant, Ki, IC50 values inhibition cleavage target peptide sequences. Both proteases are inhibited by tested polysaccharides through mixed hyperbolic binding process. A non-linear relationship was found between sulfation affinity or enzyme properties, showing composite correlation charge density interference EL/CatG activity.

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