The Reaction of Reduced Xanthine Dehydrogenase with Molecular Oxygen
نویسندگان
چکیده
منابع مشابه
The reaction of xanthine oxidase with molecular oxygen.
The reaction of reduced xanthine oxidase with oxygen occurs in two distinct kinetic phases with the rate of the fast phase being about 10 times greater than that of the slow phase. Comparison of transient state and steady state kinetics demonstrates that only the fast phase of oxidation is catalytically significant. The time course of oxidation is quantitatively independent of the following fac...
متن کاملElectrodeposition of platinum nanoparticles on reduced graphene oxide as an efficient catalyst for oxygen reduction reaction
Reduced graphene oxide film was synthesized on a glassy carbon electrode by electro reduction of graphene oxide powders in aqueous solution. Then platinum nano particles were deposited on reduced graphene oxide film that was deposited on the glassy carbon electrode via electro reduction of platinum salt. The Physical morphology of the platinum on reduced graphene oxide film was evaluated by sca...
متن کاملTurkey liver xanthine dehydrogenase: further observations on the reaction with arsenite.
The catalytically essential persulphide groups at the molybdenum centres of xanthine oxidase and xanthine dehydrogenase are essential to interaction with arsenite (Edmonson et al., 1972; Cleere et al., 1974) Inhibition of xanthine hydroxylation may result from arsenite forming a complex with the persulphides and vicinal thiol groups (Massey & Edmonson, 1970). The NADH-dichlorophenol-indophenol ...
متن کاملReaction of Dihydroxymethyl Radical with Molecular Oxygen in Aqueous Solution
Dihydroxymethyl radical (1) was found to react with oxygen diffusion controlled (k = 4.5 x 109 M _ 1 s 1 ) . The final products of the reaction are formic acid and 1/2 hydrogen peroxide. The precursor of H2O2 was shown to be O2' which is formed with G(02" -) = 6.3 (a value which includes the 02"~ formed by H atoms and oxygen (G(H) = 0.55)). If it is assumed that dihydroxymethylperoxyl radicals ...
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...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1997
ISSN: 0021-9258
DOI: 10.1074/jbc.272.13.8370