title: Crystallization and preliminary X-ray analysis of heparinase II from Pedobacter heparinus.
abstract: Heparinase II from Pedobacter heparinus (formerly Flavobacterium heparinum), which acts on both heparin and heparan sulfate, is one of several glycosaminoglycan-degrading enzymes produced by this organism. This enzyme, with a molecular weight of 84 kDa, utilizes a lytic mechanism to cleave the alpha(1-4) glycosidic bond between hexosamine (D-glucosamine) and L-iduronic or D-glucuronic acid, resulting in a product with an unsaturated sugar ring at the non-reducing end. The enzyme was crystallized by the hanging-drop vapour-diffusion method. The crystals belong to orthorhombic space group P2(1)2(1)2(1) and diffract to 2 A resolution. There are two molecules in the asymmetric unit, consistent with the finding that recombinant heparinase II functions as a dimer in solution.
authors.affiliation: Department of Biochemistry, McGill University, 3655 Promenade Sir William Osler, Montreal, Quebec H3G 1Y6, Canada.
authors.forename: David
authors.initials: D
authors.lastname: Shaya
authors.forename: Yunge
authors.initials: Y
authors.lastname: Li
authors.forename: Miroslaw
authors.initials: M
authors.lastname: Cygler
mesh_terms: D003001:Cloning, Molecular; D003460:Crystallization; D018360:Crystallography, X-Ray; D003627:Data Interpretation, Statistical; D005417:Flavobacterium / Q000737:chemistry*; D011133:Polysaccharide-Lyases / Q000737:chemistry* / Q000302:isolation & purification; D011994:Recombinant Proteins / Q000737:chemistry
chemical_list: D011994:Recombinant Proteins; D011133:Polysaccharide-Lyases; C114663:heparinase II