Isolation of cofactor common to molybdenum-containing enzymes: nitrate reductase from lupine bacteroids and xanthine oxidase from milk.

Z A Alikulov, N P L'vov, S S Burikhanov, V L Kretovich
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Abstract

A quantitative method for the anaerobic isolation of a molybdenum cofactor from two molybdenum-containing enzymes, nitrate reductase from the bacteroids of lupine nodules and xanthine oxidase from milk, is described. It was established that the cofactor consists of an aromatic component and a number of amino acid residues bound to it. The structural and catalytic function of the molybdenum cofactor in the enzyme was established.

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从羽扇豆杆菌中分离硝酸盐还原酶和从牛奶中分离黄嘌呤氧化酶等含钼酶的辅助因子。
本文描述了一种从羽扇豆结核类细菌中的硝酸还原酶和牛奶中的黄嘌呤氧化酶两种含钼酶厌氧分离钼辅助因子的定量方法。确定了辅因子由芳香组分和与之结合的若干氨基酸残基组成。确定了酶中钼辅因子的结构和催化功能。
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