Citations
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Journal ArticleDOI
Polyphenol oxidase and peroxidase in fruits and vegetables.
TL;DR: Results of biochemical research including catalytic properties, substrate specificity, susceptibility towards pH and temperature, action of inhibitors, isolation, purification, and characteristics of the enzymes are given, with special emphasis on recent achievements based on high resolution separation and isoenzyme techniques.
Book ChapterDOI
The Genetics Of Biogenic Amine Metabolism, Sclerotization, And Melanization In Drosophila Melanogaster*
TL;DR: The availability of mutations that interrupt biogenic-amine metabolism in an experimentally suitable organism such as Drosophila should provide powerful analytical tools for neurochemists, neurophysiologists, and behavioral biologists.
Journal ArticleDOI
Melanism and disease resistance in insects
TL;DR: The link between resistance, melanism and phenoloxidase activity is examined in Spodoptera larvae and the results strengthen the link between melanisms and disease resistance and implicate the involvement of phenol oxidase.
Journal ArticleDOI
Tyrosinase/catecholoxidase activity of hemocyanins: structural basis and molecular mechanism.
Heinz Decker,Felix Tuczek +1 more
TL;DR: On the basis of their molecular structures, hemocyanins are used as model systems to understand the substrate-active-site interaction between catecholoxidases and tyrosinases.
Journal ArticleDOI
Plant natural products active against snake bite--the molecular approach.
TL;DR: From the evidence presented, it can be inferred that micromolecules which neutralize the action of snake venoms mechanistically replace endogenous antitoxic serum proteins with venom neutralizing capacity such as produced by some animals.
References
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Journal ArticleDOI
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.
Journal ArticleDOI
Free Radicals in Biological Materials
Journal ArticleDOI
Ascorbic acid in aromatic hydroxylation. I. A model system for aromatic hydroxylation.
TL;DR: A large number of both normally occurring and foreign compounds of an aromatic nature are hydroxylated in the animal body to yield products with phenolic properties, the pathways by which these products are produced are poorly understood, but several may be postulated.
Journal ArticleDOI
The chemistry of melanin; mechanism of the oxidation of dihydroxyphenylalanine by tyrosinase.
TL;DR: It was possible to show that a rearrangement of the red pigment does occur during the enzymic oxidation, that synthetic dihydroxyphenylalanine melanin is probably a polymer of indoled, 6-quinone, and that the inferred o-quinonoid formulation of thered pigment is correct.