Distribution of reducing equivalents on xanthine oxidase molecules and the rates of the intramolecular electron-transfer reactions.
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ABSTRACT: When xanthine oxidase turns over 1-methylxanthine aerobically at pH8.2, the time-sequence in development of its electron-paramagnetic-resonance signals is not primarily due to slow intramolecular reactions among its centres. It derives instead from gross differences in electron distribution within enzyme molecules reduced by the substrate in comparison with those that have subsequently been partly reoxidized by one-electron reaction with oxygen.
SUBMITTER: Bray RC
PROVIDER: S-EPMC1168079 | biostudies-other | 1974 Jul
REPOSITORIES: biostudies-other
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