用薄层聚丙烯酰胺凝胶等电聚焦电泳测得该酶的等电点为3.85和4.35；

Its isoelectric points are 3.85 and 4.35, determined by iso-eletric focusing electrophoresis.

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通过对聚丙烯酰胺薄层平板等电聚焦电泳的系统研究，建立了一套适合于分析明胶等电点分布的薄层平板等电聚焦电泳技术。

In this paper the isoelectrofocusing on polyacrylamide thin slab-bed was studied systematically and the method suited for analyzing photographic gelatin was established.

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用等电聚焦电泳法测得其等电点约为7.2。 结论：从栖热菌中提取的耐热乳糖酶的理化性质不同于其它来源的乳糖酶。

Its pI was about 7.2. Conclusion:The thermostable lactase from strain of thermus sp A3 was different from lactases from other microorganism.

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