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Polyphenol oxidases in plants
Alfred M. Mayer,Eitan Harel +1 more
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TLDR
Two main groups of plant polyphenol oxidases are recognized: the catecholoxidases and the laccases: their purification, subcellular location and protein properties are described.About:
This article is published in Phytochemistry.The article was published on 1979-01-01. It has received 1211 citations till now.read more
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Multicopper Oxidases and Oxygenases
TL;DR: Copper sites have historically been divided into three classes based on their spectroscopic features, which reflect the geometric and electronic structure of the active site: type 1 or blue copper, type 2 (T2) or normal copper, and type 3 (T3) or coupled binuclear copper centers.
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Food applications of chitin and chitosans
TL;DR: Application of chitinous products in foods and pharmaceuticals as well as processing aids has received considerable attention in recent years as exotic synthetic compounds are losing their appeal.
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Laccase: new functions for an old enzyme.
TL;DR: This work has focused on more recent reports on the occurrence of laccase and its functions in physiological development and industrial utility and the reports of molecular weights, pH optima, and substrate specificity are extremely diverse.
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Phenolic compounds and their role in oxidative processes in fruits
TL;DR: In this article, the role of phenolic compounds as either antioxidants or substrates in browning reactions is examined. But the authors do not consider the effect of dietary intake and metabolic fate on the performance of browning.
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Copper enzymes in isolated chloroplasts. polyphenoloxidase in beta vulgaris
TL;DR: Evidence that a copper enzyme, polyphenoloxidase (otherwise known as tyrosinase or catecholase), is localized in the chloroplasts of spinach beet (chard), Beta vu?garis is presented.
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Contribution of Hydrophobic Interactions to the Stability of the Globular Conformation of Proteins
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Plant phenolic compounds and the isolation of plant enzymes
TL;DR: A technique is described in which insoluble polyvinylpyrrolidone is used to adsorb phenols and thus obtain active soluble enzymes and mevalonicKinase, phosphomevalonic kinase, glutamyl transferase and alkaline phosphatase have been demonstrated in extracts from peppermint leaves.
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On the average hydrophobicity of proteins and the relation between it and protein structure.
TL;DR: A new parameter, the average hydrophobicity, Hφ ave based on Tanford's free energies of transfer of amino acid side chains from an organic environment to an aqueous environment, is proposed in this paper.
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Assay of catechol oxidase—a critical comparison of methods
TL;DR: In this article, the authors compared the performance of manometric, polarographic, chronometric, and spectrophotometric methods for the determination of catechol oxidase activity.