Spectroscopic Evidence in Support of Horseradish Peroxidase Compound II-catalyzed Oxidation of Salicylic Acid but Not of Phenylethylamine

2002 ◽  
Vol 66 (3) ◽  
pp. 651-654 ◽  
Author(s):  
Tomonori KAWANO ◽  
Shoshi MUTO ◽  
Masaru ADACHI ◽  
Hiroshi HOSOYA ◽  
Frédéric LAPEYRIE
Keyword(s):  
Salicylic Acid ◽  
Horseradish Peroxidase ◽  
Spectroscopic Evidence ◽  
Compound Ii ◽  
Catalyzed Oxidation

Rate constants for reactions of horseradish peroxidase compounds I and II with 4-substituted arylboronic acids

1994 ◽  
Vol 72 (10) ◽  
pp. 2159-2162 ◽  
Author(s):  
Weimei Sun ◽  
Xiaoying Ji ◽  
Larry J. Kricka ◽  
H. Brian Dunford
Keyword(s):  
Horseradish Peroxidase ◽  
Rate Constants ◽  
Compound I ◽  
Arylboronic Acid ◽  
Experimental Conditions ◽  
Kinetic Measurements ◽  
Arylboronic Acids ◽  
Total Ionic Strength ◽  
Compound Ii ◽  
Catalyzed Oxidation

The rate constants for the reactions of horseradish peroxidase compound I (k1) and compound II (k2) with three 4-substituted arylboronic acids, which enhance chemiluminescence in the horseradish peroxidase catalyzed oxidation of luminol by hydrogen peroxide, were determined at pH 8.6, total ionic strength 0.11 M, using stopped-flow kinetic measurements. For comparison, the rate constants of the reactions of 4-iodophenol with compounds I and II were also determined under the same experimental conditions. The three arylboronic acid derivatives and their rate constants are: 4-biphenylboronic acid, k1 = (1.21 ± 0.08) × 106 M−1 s−1, k2 = (4.6 ± 0.2) × 105 M−1 s−1; 4-bromophenylboronic acid, k1 = (5.5 ± 0.2) × 104 M−1 s−1, k2 = (3.6 ± 0.2) × 104 M−1 s−1; and 4-iodophenylboronic acid, k1 = (1.1 ± 0.2) × 105 M−1 s−1, k2 = (1.3 ± 0.1) × 104 M−1 s−1. 4-Biphenylboronic acid, which shows comparable luminescent enhancement to 4-iodophenol, has the highest reactivity in the reduction of both compounds I and II among the three arylboronic acid derivatives tested.

Spectroscopic Evidence That Salicylic Acid Converts a Temporally Inactivated Form of Horseradish Peroxidase (Compound III) to the Irreversibly Inactivated Verdohemoprotein (P-670)

2002 ◽  
Vol 66 (3) ◽  
pp. 646-650 ◽  
Author(s):  
Tomonori KAWANO ◽  
Shoshi MUTO ◽  
Masaru ADACHI ◽  
Hiroshi HOSOYA ◽  
Frédéric LAPEYRIE
Keyword(s):  
Salicylic Acid ◽  
Horseradish Peroxidase ◽  
Spectroscopic Evidence

scholarly journals Formation of 8-methylguanine as a result of DNA alkylation by methyl radicals generated during horseradish peroxidase-catalyzed oxidation of methylhydrazine.

1990 ◽  
Vol 265 (36) ◽  
pp. 22093-22096
Author(s):  
O Augusto ◽  
E L Cavalieri ◽  
E G Rogan ◽  
N V RamaKrishna ◽  
C Kolar
Keyword(s):  
Horseradish Peroxidase ◽  
Dna Alkylation ◽  
Methyl Radicals ◽  
Catalyzed Oxidation

Kinetic studies on the oxidation of phenols by the horseradish peroxidase compound II

1997 ◽  
Vol 1339 (1) ◽  
pp. 79-87 ◽  
Author(s):  
Prasanta K. Patel ◽  
Madhu Sudan Mondal ◽  
Sandeep Modi ◽  
Digambar V. Behere
Keyword(s):  
Horseradish Peroxidase ◽  
Kinetic Studies ◽  
Oxidation Of Phenols ◽  
Compound Ii

2,3-diaminophenazine is the product from the horseradish peroxidase-catalyzed oxidation of o-phenylenediamine

1987 ◽  
Vol 165 (1) ◽  
pp. 230-233 ◽  
Author(s):  
Peter J. Tarcha ◽  
Victor P. Chu ◽  
Dave Whittern
Keyword(s):  
Horseradish Peroxidase ◽  
Catalyzed Oxidation
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