Uptake of Metallic Mercury by Xanthine, Xanthine Oxidase System and Catalase
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چکیده
منابع مشابه
Sensitive electrochemical measurement of hydroxyl radical generation induced by the xanthine-xanthine oxidase system.
A sensitive electrochemical measurement system for hydroxyl radical (OH) was developed using enzyme-catalyzed signal amplification. In the presence of 2,6-xylenol as a trapping agent, glucose as a substrate, and pyrroloquinoline quinone-dependent glucose dehydrogenase (PQQ-GDH) as a catalyst, the amperometric signal of the trapping adduct 2,6-dimethylhydroquinone (DMHQ) produced by the hydroxyl...
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The enzyme is well-suited to carry out the catalysis of these oxidative reactions, containing as it does four redox-active sites: molybdenum, flavin adenine dinucleotide (FAD) and a pair of iron-sulfur centers of the ferredoxin type (Fe2S2). The purine substrates interact with the enzyme at the molybdenum site of xanthine oxidase and oxygen at the flavin site. The two metabolic reactions above ...
متن کاملStudy of Drug Metabolism by Xanthine Oxidase
In this work, we report the studies of drug metabolism by xanthine oxidase (XOD) with electrochemical techniques. Firstly, a pair of stable, well-defined and quasi-reversible oxidation/reduction peaks is obtained with the formal potential at -413.1 mV (vs. SCE) after embedding XOD in salmon sperm DNA membrane on the surface of pyrolytic graphite electrode. Then, a new steady peak can be observe...
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At the 661st Meeting of the Biochemical Society, held at Bath, the Host Colloquium, a joint meeting with the Society for Free Radical Research, took place on 10th and 11th April 1997. Its title was ‘Xanthine oxidase: enzymology and pathophysiology’. The two aspects of xanthine oxidase research specified in the Colloquium title have developed remarkably separately, and, for a number of reasons, ...
متن کاملXanthine oxidase and xanthine dehydrogenase from an estivating land snail.
During arousal from estivation in land snails, Otala lactea, active metabolic functions are restored within minutes and oxygen consumption increases dramatically. During the transition from the hypoxic conditions of estivation to normoxia it is possible that xanthine oxidase (XO) in hepatopancreas contributes to the observed lipid peroxidation. Using a fluorometric assay that is based on the ox...
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ژورنال
عنوان ژورنال: Sangyo Igaku
سال: 1983
ISSN: 0047-1879,1881-1302
DOI: 10.1539/joh1959.25.7_692_3