Purification and partial characterization of an exo-beta-glucanase from the yeast Kluyveromyces aestaurii.
The intracellular-periplasmic exo-1,3-beta-glucanase (EC 3.2.1.58) has been extracted from the yeast Kluyveromyces aestuarii and purified to immunoelectrophoretic homogeneity by ion-exchange and gel-exclusion chromatography. The kinetic constants and activation energies for laminarin, p-nitrophenyl-beta-D-glucoside, and pustulan have been determined, along with the effect of pH. Evidence is presented indicating that the enzyme is composed of a single polypeptide chain, about 24% carbohydrates, and its molecular weight was estimated to be 43 000.
D001203:Ascomycota / Q000201:enzymology*; D002241:Carbohydrates / Q000032:analysis; D005959:Glucosidases / Q000302:isolation & purification / Q000378:metabolism*; D006027:Glycosides / Q000378:metabolism; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D009596:Nitrophenols / Q000378:metabolism; D004718:Saccharomycetales / Q000201:enzymology*
D002241:Carbohydrates; D006027:Glycosides; D009596:Nitrophenols; D005959:Glucosidases