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大鼠小肠β-半乳糖苷酶。通过离子交换色谱法和凝胶过滤法进行分离。

Rat small-intestinal beta-galactosidases. Separation by ion-exchange chromatography and gel filtration.

作者信息

Asp N G, Dahlqvist A

出版信息

Biochem J. 1968 Feb;106(4):841-5. doi: 10.1042/bj1060841.

Abstract
  1. The chromatography of rat small-intestinal beta-galactosidase activities on gel-filtration and ion-exchange columns has been studied. Five different substrates were used to measure beta-galactosidase activity (lactose, phenyl beta-galactoside, o-nitrophenyl beta-galactoside, p-nitrophenyl beta-galactoside and 6-bromo-2-naphthyl beta-galactoside) and the activity was measured at one acid and one more neutral pH value. 2. By gel filtration one acid beta-galactosidase, hydrolysing lactose and the hetero-beta-galactosides at about the same rate, and one more neutral beta-galactosidase, hydrolysing lactose much more rapidly than the hetero-beta-galactosides, were separated. 3. By ion-exchange chromatography the acid enzyme was fractionated into two components. These may be individual enzymes or different forms of the same enzyme.
摘要
  1. 对大鼠小肠β-半乳糖苷酶活性在凝胶过滤柱和离子交换柱上的色谱情况进行了研究。使用了五种不同的底物来测定β-半乳糖苷酶活性(乳糖、苯基β-半乳糖苷、邻硝基苯基β-半乳糖苷、对硝基苯基β-半乳糖苷和6-溴-2-萘基β-半乳糖苷),并且在一种酸性pH值和另一种接近中性的pH值下测定活性。2. 通过凝胶过滤,分离出一种酸性β-半乳糖苷酶,它以大致相同的速率水解乳糖和杂β-半乳糖苷,以及另一种接近中性的β-半乳糖苷酶,其水解乳糖的速度比杂β-半乳糖苷快得多。3. 通过离子交换色谱法,酸性酶被分离成两个组分。这些可能是单独的酶,或者是同一酶的不同形式。

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METHOD FOR ASSAY OF INTESTINAL DISACCHARIDASES.肠道双糖酶的测定方法。
Anal Biochem. 1964 Jan;7:18-25. doi: 10.1016/0003-2697(64)90115-0.
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Beta-galactosidase activity in human intestinal lactases.人肠道乳糖酶中的β-半乳糖苷酶活性
Biochim Biophys Acta. 1966 Feb 14;113(2):390-3. doi: 10.1016/s0926-6593(66)80077-2.

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