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基于环氧功能基团的杂化硅胶固定化酶反应器

, PP. 874-879

Keywords: 固定化酶反应器,有机无机杂化整体柱,蛋白质,高效液相色谱-质谱

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Abstract:

在蛋白质组学研究中,为解决自由溶液酶解时间长、蛋白酶自降解等问题,各种类型的固定化酶反应器引起了人们的关注.采用溶胶凝胶法,在100μm内径毛细管内,以3-(甲基丙烯酰氧)丙基三甲氧基硅烷为功能单体,以四乙氧基硅烷为交联剂,制备了一种新型的杂化硅胶整体材料.并通过在整体柱表面由环氧功能团水解得到的二醇与胰蛋白酶(trypsin)的氨基进行一步反应,实现了胰蛋白酶固定化.利用该IMER,在47s内实现了牛血清白蛋白的酶解;经反相色谱分离和质谱鉴定,序列覆盖率在35%以上,与自由溶液酶解12h的效果相当.结果表明,基于亲水性杂化硅胶整体材料的IMER有望在蛋白质组学研究中发挥重要作用.

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