In enzymology, a heparin lyase (EC 4.2.2.7) is an enzyme that catalyzes the chemical reaction In enzymology, a heparin lyase (EC 4.2.2.7) is an enzyme that catalyzes the chemical reaction This enzyme belongs to the family of lyases, specifically those carbon-oxygen lyases acting on polysaccharides. The systematic name of this enzyme class is heparin lyase. Other names in common use include heparin eliminase, and heparinase.