Identity of dimeric dihydrodiol dehydrogenase as NADP(+)-dependent D-xylose dehydrogenase in pig liver.
[No authors listed]
摘要
Dimeric dihydrodiol dehydrogenases (DDs, EC 1.3.1.20), which oxidize trans-dihydrodiols of aromatic hydrocarbons to the corresponding catechols, have been molecularly cloned from human intestine, monkey kidney, pig liver, dog liver, and rabbit lens. A comparison of the sequences with the DNA sequences in databases suggested that dimeric DDs constitute a novel protein family with 20 gene products. In addition, it was found that dimeric DD oxidizes several pentoses and hexoses, and the specificity resembles that of NADP(+)-dependent D-xylose dehydrogenase (EC 1.1.1.179) of pig liver. The inhibition of D-xylose dehydrogenase activity in the extracts of monkey kidney, dog liver and pig liver, its co-purification with dimeric DD activity from pig liver, and kinetic analysis of the D-xylose reduction by pig dimeric DD indicated that the two enzymes are the same protein.
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基因功能
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原始数据
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文献解读
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