G. N. Pruidze

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The substrate specificity and some kinetic properties of the monomeric (Mr = 26 000--35 000) and dimeric (Mr = 55 000--70 000) forms of phenol oxidase from vine leaves were studied. These forms possess different hydroxylating and o-diphenol oxidase activities. A kinetic analysis demonstrated that the monomeric form of the enzyme possesses a higher affinity(More)
The intracellular localization and some properties of monophenol monooxygenase (MPMO) from fresh tea leaves have been studied. It has been demonstrated that MPMO activity is located in cytosole and chloroplasts. These two forms have different properties. Molecular weights of cytosole and chloroplasts MPMO are 41 and 28 kD respectively. The chloroplasts and(More)
Phenol oxidase (EC 1.14.18.1) from the microscopic fungus Mycelia sterilia IBR 35219/2 was immobilized using glutaraldehyde on macroporous silica carriers. The enzyme immobilized on amino-Silochrome SKh-2 or aminopropyl-Silochrome 350/80 exhibited maximum activity. Soluble and immobilized phenol oxidases were compared. Compared to the soluble enzyme, the(More)
Purification of fractions of tea leaves peroxidase is described. During ion-exchange chromatography on DEAE- and CM-cellulose peroxidase is eluted into six fractions, differing in their electrophoretic properties. The enzyme showed optimal activity at pH 4.1-5.0, when the enzyme fractions of guaiacol adsorbed on DEAE-cellulose were used as a substrate; in(More)
Phenol oxidase (EC 1.14.18.1) from the microscopic fungusMycelia sterilia IBR 35219/2 was immobilized using glutaraldehyde on macroporous silica carriers. The enzyme immobilized on amino-Silochrome SKh-2 or aminopropyl-Silochrome 350/80 exhibited maximum activity. Soluble and immobilized phenol oxidases were compared. Compared to the soluble enzyme, the(More)
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