Molecular identification of the enzyme responsible for the mitochondrial NADH-supported ammonium-dependent hydrogen peroxide production.

Molecular identification of the enzyme responsible for the mitochondrial NADH-supported ammonium-dependent hydrogen peroxide production.
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DOI:
10.1016/j.febslet.2010.12.019
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发表时间:
2011-01-21
期刊:
影响因子:
3.5
通讯作者:
Vinogradov AD
Vinogradov AD
中科院分区:
生物学3区
文献类型:
--
作者:
Kareyeva AV;Grivennikova VG;Cecchini G;Vinogradov AD

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A homogeneous protein with a subunit apparent molecular mass of ~50 kDa that catalyzes the previously described mitochondrial NADH-supported ammonium-stimulated hydrogen peroxide production (Grivennikova, V.G., Gecchini, G. and Vinogradov, A.D. (2008) FEBS Letts. 583, 1287-1291) was purified from the mitochondrial matrix of bovine heart. Chromatography of partially purified protein showed that the peaks of ammonium-stimulated NADH-dependent H2O2 production and that of NADH:lipoamide oxidoreductase activity coincided. The catalytic properties and mass spectrometry of the trypsin-digested protein revealed peptides that allowed identification of the protein as the Bos taurus dihydrolipoyl dehydrogenase.
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