作者:Takeshi Tsumuraya、Nobuo Takazawa、Atsuko Tsunakawa、Roman Fleck、Satoru Masamune
DOI:10.1002/1521-3765(20010903)7:17<3748::aid-chem3748>3.0.co;2-g
日期:2001.9.3
negatively charged functional groups was designed and synthesized with the goal of generating catalytic antibodies for the hydrolysis of ester 6 and amide 7. Of the 36 monoclonal antibodies specific to BSA-4 (bovine serum albumin) that were isolated, six accelerated the hydrolysis of 6. Two catalytic antibodies with distinctively different and representative kinetic behaviors were selected for detailed
设计并合成了具有正电荷和负电荷功能基团的两性离子半抗原4,其目的是生成用于酯6和酰胺7水解的催化抗体。在针对BSA-4(牛血清白蛋白)的36种单克隆抗体中,分离出的六种化合物加速了6种化合物的水解。选择了两种具有明显不同和代表性动力学行为的催化抗体进行详细的动力学研究。H8-2-6F11表现出爆发动力学行为,这可以归因于酰基中间体的形成,而H8-1-2D5则没有,但确实表现出很高的多次转换活性。H8-1-2D5催化6的水解速率遵循Michaelis-Menten动力学。Michaelis-Menten常数Km和催化常数kcat的表观值为488 microM和3。5分钟(-1)。H8-1-2D5的催化速率提高(kcat / kun)为1.3 x 10(5),比单功能半抗原的催化速率提高大约两个数量级。因此,H8-1-2D5在催化活性上与通过称为异源免疫的相关方法分离的抗体具有很好的比较。