该研究以水溶性低分子量壳寡糖作为修饰剂对已纯化的多聚半乳糖醛酸酶(PG)进行化学修饰,得到化学修饰酶(COS-PG),然后分析PG和COS-PG的酶学性质如酶比活力、最适pH、最适温度、pH稳定性、温度稳定性等。
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化学修饰实验发现：巯基、胍基、氨基、羧基和吲哚基可能参与酶活性中心的组成。
Chemical modification studies showed that the sulfhydryl, guanido, amino, carboxyl and indolyl groups may participate in the active center of the enzyme.
本文用各种化学修饰剂对脱卤酶yl、109和H - 2进行化学修饰。
Chemical modification reactions of dehalogenase YL, 109 and H-2 were carried out by various reagents.
重点讨论了脂肪酶的化学修饰，尤其是在修饰方法和修饰机理方面的研究进展。
Highlights were given to the developments of chemical modification which focusing on the modification methods and activation mechanism.
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