Kinetics and mechanism of oxidation of super-reduced cobalamin and cobinamide species by thiosulfate, sulfite and dithionite

We studied the kinetics of reactions of cob(I)alamin and cob(I)inamide with thiosulfate, sulfite, and dithionite by UV-Visible (UV-Vis) and stopped-flow spectroscopy. We found that the two Co(I) species were oxidized by these sulfur-containing compounds to Co(II) forms: oxidation by excess thiosulfa...

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Veröffentlicht in:	Dalton transactions : an international journal of inorganic chemistry 2013-11, Vol.42 (43), p.15307-15316
Hauptverfasser:	Dereven'kov, Ilia A, Salnikov, Denis S, Makarov, Sergei V, Boss, Gerry R, Koifman, Oskar I
Format:	Artikel
Sprache:	eng
Schlagworte:	Cobamides - chemistry Coordination Complexes - chemistry Copper - chemistry Dithionite - chemistry Hydrogen-Ion Concentration Kinetics Oxidants Oxidation Oxidation-Reduction Oxidizing agents Reaction kinetics Spectrophotometry, Ultraviolet Spectroscopy Sulfites Sulfites - chemistry Thiosulfates - chemistry Vitamin B 12 - chemistry
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