Abstract
Aquacobalamin binds hydrogen peroxide reversibly to form a cobalt(III) hydroperoxo adduct with a 0.25 mM dissociation constant, as evidenced by UV-vis absorption spectroscopy and corroborated by NMR, Raman spectroscopy, stopped-flow UV-vis measurements, and density functional theory calculations.
MeSH terms
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Cobalt / chemistry
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Density Functional Theory
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Hydrogen Peroxide / chemistry*
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Magnetic Resonance Spectroscopy
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Models, Chemical
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Spectrophotometry, Ultraviolet
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Spectrum Analysis, Raman
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Vitamin B 12 / analogs & derivatives*
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Vitamin B 12 / chemistry
Substances
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aquacobalamin
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Cobalt
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Hydrogen Peroxide
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Vitamin B 12