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Thermal inactivation of alpha-galactosidase from Penicillium canescens
Authors:Borzova N V  Varbanets L D
Abstract:The kinetics and mechanism of thermal inactivation of Penicillium canescens alpha-galactosidase in the temperature range of 55-65 degrees C have been studied. The kinetic scheme of alpha-galactosidase thermal inactivation was proposed which included the reversible dissociation of active hexamers into associating monomers and irreversible denaturation of monomers. The kinetic constants of thermal inactivation have been determined. The effect of enzyme concentration and purification efficiency has been investigated. A possibility of defence of protein molecule from thermal inactivation in the presence of BSA, glycerol, melibiose, raffinose and stachyose is shown.
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