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    • 8. 发明授权
    • Antibody-enhanced stereospecific hydrolyses
    • 抗体增强的立体特异性水解
    • US5190865A
    • 1993-03-02
    • US574674
    • 1990-08-29
    • Peter G. Schultz
    • Peter G. Schultz
    • A61K47/48C07K16/00C12N9/00C12N9/86C12N15/10C12P21/08
    • C07K16/00A61K47/48369A61K47/48507C12N15/10C12N9/0002C12N9/86
    • Hydrolyses of various chiral compounds are performed in stereospecific manner by antibodies generated from analogs of transition states of the compounds. The compounds susceptible to such hydrolysis include esters, thioesters and amides. In certain embodiments of the invention, antibodies with a strong selectivity toward one of the two enantiomers with respect to the chiral substrate are generated from haptens which is a mixture of enantiomers. A method of screening antibodies thus generated for those which are active towards the desired cleavage is also disclosed, using a test compound similar in structure to the intended substrate but which contains both a fluorescence donor group and a fluorescence quenching group, situated on opposite sides of the cleavage site. Cleavage by active antibodies results in separation of the groups and a resulting termination of the quenching effect.
    • 各种手性化合物的水解通过由化合物的过渡态的类似物产生的抗体以立体特异性方式进行。 对这种水解敏感的化合物包括酯,硫酯和酰胺。 在本发明的某些实施方案中,相对于手性底物,对于两种对映异构体之一具有强选择性的抗体是由对映异构体混合物的半抗原产生的。 还公开了筛选针对对所需切割有活性的抗体的抗体的方法,其使用与预期底物相似结构的测试化合物,但同时含有荧光供体基团和荧光猝灭基团,位于 切割位点。 通过活性抗体切割导致基团的分离和终止猝灭效应。