Adduct of Aquacobalamin with Hydrogen Peroxide

被引:14
|
作者
Lehene, Maria [1 ]
Plesa, Diana [1 ]
Ionescu-Zinca, Stefania [1 ]
Iancu, Stefania D. [2 ]
Leopold, Nicolae [2 ]
Makarov, Sergei, V [3 ]
Branzanic, Adrian M., V [1 ]
Silaghi-Dumitrescu, Radu [1 ]
机构
[1] Babes Bolyai Univ BBU, Dept Chem, RO-400028 Cluj Napoca, Romania
[2] Babes Bolyai Univ BBU, Fac Phys, RO-400084 Cluj Napoca, Romania
[3] Ivanovo State Univ Chem & Technol, Ivanovo 153000, Russia
关键词
RESONANCE RAMAN-SPECTRA; 2-DIMENSIONAL NMR; VITAMIN-B12; COBALAMIN; OXIDATION; B-12R;
D O I
10.1021/acs.inorgchem.1c01483
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
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.
引用
收藏
页码:12681 / 12684
页数:4
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