An endo-(1 leads to 3)-beta-D-glucanase from Mucor hiemalis.
An endo-(1 leads to 3)-beta-D-glucanase (EC 3.2.1.6), isolated from the culture filtrate of the fungus Mucor hiemalis, was purified by ammonium sulfate fractionation, gel filtration, and column chromatography on O-(carboxymethyl)cellulose. The optimum pH, optimum temperature, and Km value of the enzyme were pH 5.0, 50 degrees, and 0.048%, respectively. The enzyme was strongly inactivated by Pb2+, Cu2+, and Hg2+ ions and also inhibited by Zn2+ and Fe3+ ions. The enzyme was specific for laminaran and the action pattern of the enzyme was of the endo-type. The molecular weight of the enzyme, as determined by gel filtration, was 30,000.
D002413:Cations, Divalent; D002850:Chromatography, Gel; D002852:Chromatography, Ion Exchange; D004693:Glucan Endo-1,3-beta-D-Glucosidase / Q000302:isolation & purification* / Q000378:metabolism; D006026:Glycoside Hydrolases / Q000302:isolation & purification*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008970:Molecular Weight; D009089:Mucor / Q000201:enzymology*; D013696:Temperature
D002413:Cations, Divalent; D006026:Glycoside Hydrolases; D004693:Glucan Endo-1,3-beta-D-Glucosidase