title: A low molecular weight isoform of hyaluronidase: purification from Indian cobra (Naja naja) venom and partial characterization.
abstract: A low molecular weight isoform of hyaluronidase (NNH2) has been isolated from Indian cobra (Naja naja) venom by successive chromatography on Sephadex G-75 and CM-Sephadex C-25 columns. The apparent molecular weight determined by SDS-PAGE is 52 kD, and the pI value is 9.7. NNH2 is an endoglycosidase and exhibits in vitro absolute specificity for hyaluronan; it also hydrolyzed hyaluronan in human skin sections. NNH2 is nontoxic, but it indirectly potentiates the hemorrhagic activity of hemorrhagic complex-I. Curcumin, indomethacin, and tannic acid inhibited dose dependently the degradation of hyaluronan by NNH2.
authors.affiliation: Department of Biochemistry, University of Mysore, Mysore 570 006, India.
authors.forename: K S
authors.initials: KS
authors.lastname: Girish
authors.forename: K
authors.initials: K
authors.lastname: Kemparaju
mesh_terms: D000818:Animals; D004546:Elapid Venoms / Q000201:enzymology*; D004591:Electrophoresis, Polyacrylamide Gel; D006461:Hemolysis / Q000187:drug effects; D006801:Humans; D006820:Hyaluronic Acid / Q000378:metabolism; D006821:Hyaluronoglucosaminidase / Q000037:antagonists & inhibitors / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D066298:In Vitro Techniques; D051379:Mice; D008970:Molecular Weight; D013379:Substrate Specificity
chemical_list: D004546:Elapid Venoms; D006820:Hyaluronic Acid; D006821:Hyaluronoglucosaminidase