Results 11 to 20 of about 33,328 (231)

The Binding Affinity of Small Molecules with Yam Tyrosinase (Catechol Oxidase): A Biophysical Study [PDF]

open access: yesBiochemistry Research International, 2019
Yam tyrosinase has become an economically essential enzyme due to its ease of purification and abundant availability of yam tubers. However, an efficient biochemical and biophysical characterization of yam tyrosinase has not been reported. In the present
Tabassum Mulla   +3 more
doaj   +2 more sources

Catechol oxidase — structure and activity [PDF]

open access: yesCurrent Opinion in Structural Biology, 1999
Recently determined structures of copper-containing plant catechol oxidase in three different catalytic states have provided new insights into the mechanism of this enzyme and its relationship to other copper type-3 proteins. Moreover, the active site of catechol oxidase has been found to be structurally conserved with the oxygen-binding site of a ...
C, Eicken, B, Krebs, J C, Sacchettini
openaire   +4 more sources

Case Report: A possible novel adult-onset, progressive MAO-A hypofunction [PDF]

open access: yesFrontiers in Neuroscience
We describe the clinical presentation, pathophysiology, and successful treatment of a previously undocumented adult onset, progressive form of monoamine oxidase A hypofunction.
Stefan Berteau, Erik Armitano
doaj   +2 more sources

A new crystal form of Aspergillus oryzae catechol oxidase and evaluation of copper site structures in coupled binuclear copper enzymes. [PDF]

open access: yesPLoS ONE, 2018
Coupled binuclear copper (CBC) enzymes have a conserved type 3 copper site that binds molecular oxygen to oxidize various mono- and diphenolic compounds.
Leena Penttinen   +5 more
doaj   +2 more sources

Purification and Enzymatic Properties of Soluble and Membrane-Bound Polyphenol Oxidase from Agaricus bisporus [PDF]

open access: yesShipin Kexue, 2023
An extraction and purification method for soluble polyphenol oxidase (sPPO) and membrane-bound polyphenol oxidases (mPPO) from Agaricus bisporus was developed involving temperature-induced phase partitioning, fractional precipitation with ammonium ...
HE Xingxing, LEI Jing, GUAN Wenqiang
doaj   +1 more source

Purification and Characterization of Polyphenol Oxidase in the Fruits of Opuntia ficus-indica

open access: yesBiology, 2023
Firstly, polyphenol oxidase (PPO) was purified from the fruits of Opuntia ficus-indica using Sepharose 4B–L-tyrosine–p-aminobenzoic acid affinity chromatography, and the enzyme was characterized. The PPO was purified 20.59-fold.
Dudu Demir   +2 more
doaj   +1 more source

Towards Efficient Catalysts via Biomimetic Chemistry for Diphenols and Aminophenols Aerobic Oxidation [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2023
Biomimetic chemistry is a new environment-friendly approach that is inspired by biological processes, to produce new catalysts, and to develop ‘green’ synthetic routes to chemical catalysts based on the benefits of biological systems, aimed to find ...
Abdeslam Mouadili   +2 more
doaj   +1 more source

The Bifunctional Catalase-Phenol Oxidase of Mycothermus Thermophilum (MtCATPO) Increases the Antioxidant Capacities of its Ortho-Diphenolic Substrates and of Green and Black Tea Extracts

open access: yesTurkish Journal of Agriculture: Food Science and Technology, 2021
Catalase from the thermophilic fungus Mycothermus thermophilus is a bifunctional enzyme with a secondary phenol oxidase activity (CATPO). MtCATPO catalyses the oxidation of catechol, chlorogenic acid, caffeic acid and (+)-catechin to yield mainly dimers,
Betül Söyler, Zümrüt Begüm Ögel
doaj   +1 more source

Coupled Oxidative Degradation of Blueberry Anthocyanins Induced by Catechol

open access: yesShipin gongye ke-ji, 2022
In order to clarify the degradation pathway of anthocyanins in blueberry during storage and processing,the mechanism of coupled oxidation of anthocyanins-polyphenol oxidase-catechol was systematically studied, and the dose-response relationship among ...
Shaoqian CAO, Kai JIANG, Liang LIU
doaj   +1 more source

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