Zobrazeno 1 - 10 of 145 pro vyhledávání: '"H. B. Dunford"'
1
Oxidations of iron(II)/(III) by hydrogen peroxide: from aquo to enzyme
Autor: H. B. Dunford
Publikováno v: Coordination Chemistry Reviews. :311-318
The mechanism of reaction of hexaquo iron(II) with hydrogen peroxide has been unresolved for 70 years. Most scientists, perhaps by default, have accepted the free radical chain mechanism of Barb et al. (Trans. Faraday Soc. 47 (1957) 462). However an
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dd8478eb59eb3ffd0a65854aeb81a569
https://doi.org/10.1016/s0010-8545(02)00024-3
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2
Mechanism of the Oxidation of 3,5,3‘,5‘-Tetramethylbenzidine by Myeloperoxidase Determined by Transient- and Steady-State Kinetics
Autor: Leah A. Marquez, H. B. Dunford
Publikováno v: Biochemistry. 36:9349-9355
Earlier investigations of the oxidation of 3,5,3',5'-tetramethylbenzidine (TMB) using horseradish peroxidase and prostaglandin H-synthase have shown the formation of a cation free radical of TMB in equilibrium with a charge-transfer complex, consiste
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6a1f206d1d6395aab6764657cf086951
https://doi.org/10.1021/bi970595j
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3
pH Dependence and Structural Interpretation of the Reactions of Coprinus cinereus Peroxidase with Hydrogen Peroxide, Ferulic Acid, and 2,2‘-Azinobis(3-ethylbenzthiazoline-6-sulfonic acid)
Autor: Rasmussen Cb, H. B. Dunford, Abelskov Ak, Karen G. Welinder, Andrew T. Smith
Publikováno v: Biochemistry. 36:9453-9463
Steady-state and transient-state analysis of Coprinus cinereus peroxidase, CIP (identical to Arthromyces ramosus peroxidase), was used to characterize the kinetics of the three fundamental steps in heme peroxidase catalysis: compound I (cpd I) format
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::05f0806424415b01c6809a7f083b1493
https://doi.org/10.1021/bi970387r
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4
Reactions of Prostaglandin Endoperoxide Synthase and Its Compound I with Hydroperoxides
Autor: Marica Bakovic, H. B. Dunford
Publikováno v: Journal of Biological Chemistry. 271:2048-2056
The reactions of native prostaglandin endoperoxide synthase with structurally different hydroperoxides have been investigated by using kinetic spectrophotometric scan and conventional and sequential mixing stopped-flow experiments. The second order r
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d384b4cf9e6ec5a8187b9e73b1209e27
https://doi.org/10.1074/jbc.271.4.2048
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5
pH and temperature dependence of the rate of compound I formation from the reaction of prostaglandin endoperoxide synthase with hydrogen peroxide
Autor: H. B. Dunford, Marica Bakovic
Publikováno v: Biochemistry and Cell Biology. 74:117-124
The formation of primary oxidized compound of prostaglandin endoperoxide synthase, compound I, was studied as a function of pH and temperature using hydrogen peroxide as a substrate. Analysis of the results indicates that compound I formation is infl
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6bce29cacbfda7d0029982235a4751d9
https://doi.org/10.1139/o96-013
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6
Oxygenation reactions of prostaglandins endoperoxide synthase and soybean lipoxygenase. Surprising stoichiometry in the formation of hydroperoxy and hydroxy derivatives of cis,cis-eicosa-11,14-dienoic acid
Autor: H. B. Dunford, Marica Bakovic
Publikováno v: Prostaglandins, Leukotrienes and Essential Fatty Acids. 53:423-431
The stoichiometry of the oxygenation reaction of cis,cis -eicosa-11,14-dienoic acid catalyzed by prostaglandin endoperoxide synthase and soybean lipoxygenase has been investigated by using steady-state initial rate measurements. The rate of product f
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e905ef2cededa8a8e2f6fdf4de34b26b
https://doi.org/10.1016/0952-3278(95)90107-8
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7
Transient and Steady-State Kinetics of the Oxidation of Scopoletin by Horseradish Peroxidase Compounds I, II and III in the Presence of NADH
Autor: Leah A. Marquez, H. B. Dunford
Publikováno v: European Journal of Biochemistry. 233:364-371
Scopoletin, a naturally occurring fluorescent component of some plants and a proven plant growth inhibitor, is a known reactant with peroxidase. However, the kinetics of the elementary steps of the reaction have never been investigated, nor has the q
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db080b22de4596ae27dac16250b023af
https://doi.org/10.1111/j.1432-1033.1995.364_1.x
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9
Rate Enhancement of Compound I Formation of Barley Peroxidase by Ferulic Acid, Caffeic Acid and Coniferyl Alcohol
Autor: Karen G. Welinder, H. B. Dunford, Christine B. Rasmussen
Publikováno v: Biochemistry. 34:4022-4029
Reactions of barley peroxidase 1 were studied using transient-state and steady-state kinetics at pH 3.96, 25 degrees C, and 0.1 M ionic strength, in both the presence and the absence of 1 mM calcium ion. The rate of compound I formation from barley p
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::03289612b82241b7bddd2baeb823d057
https://doi.org/10.1021/bi00012a021
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10
One-electron oxidations by peroxidases
Autor: H. B. Dunford
Publikováno v: Xenobiotica. 25:725-733
1. Peroxidases typically follow the reaction cycle: native enzyme--compound I--compound II--native enzyme, in which the latter two steps involve hydrogen atom transfer from substrate to enzyme. 2. Exceptions involve (1) very facile, rapidly reacting
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https://doi.org/10.3109/00498259509061888
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