The invention provides biocatalytic methods for the manufacture of pure single enantiomer compounds. This invention provides methods of screening for enzymes which are highly enantioselective or enzymes that can provide any desired stereoisomer of a compound. The invention provides the use of single enantiomer substrates in performing a growth screen of a clonal library to identify highly stereoselective enzymes.
In one aspect, methods for screening and identification of enzymes, e.g., transaminases, nitrilases, aldolases, epoxide hydrolases are provided. Methods for the production and screening of gene libraries generated from nucleic acids isolated from more than one organism for enzyme, e.g., transaminase, activities are also provided.
本发明提供了制造纯单一对映体化合物的
生物催化方法。本发明提供了筛选高对映体选择性酶或可提供任何所需化合物立体异构体的酶的方法。本发明提供了使用单一对映体底物对克隆库进行生长筛选以鉴定高立体选择性酶的方法。
一方面,本发明提供了筛选和鉴定酶的方法,例如转
氨酶、硝化酶、醛醇酶、
环氧化物水解酶。还提供了从一种以上的
生物体中分离出的核酸产生的
基因文库的生产和筛选酶(如转
氨酶)活性的方法。