Recombinant enzyme libraries and kits where a plurality of enzymes are each characterized by different physical and/or chemical characteristics and classified by common characteristics. The characteristics are determined by screening of recombinant enzymes expressed by a DNA library produced from various microorganisms. Also disclosed is a process for identifying clones of a recombinant library which express a protein with a desired ctivity by screening a library of expression clones randomly produced from DNA of at least one microorganism, said screeing being effected on expression products of said clones to thereby identify clones which express a protein with a desired activity. Also disclosed is a process of screening clones having DNA from an uncultivatedmicroorganism for a specified protein activity by screening for a specified protein activity in a library of clones prepared by (I) recovering DNA from a DNA population derived from at least one uncultivated microorganism; and (ii) transforming a host with recovered DNA to produce a library of clones which is screened for the specified protein activity.
重组酶库和试剂盒,其中多种酶各自具有不同的物理和/或
化学特征,并按共同特征进行分类。这些特征是通过筛选由各种微
生物产生的 DNA 文库表达的
重组酶来确定的。还公开了一种通过筛选由至少一种微
生物的 DNA 随机产生的表达克隆库来确定
重组库中表达所需活性蛋白质的克隆的方法,所述筛选是对所述克隆的表达产物进行的,从而确定表达所需活性蛋白质的克隆。本发明还公开了一种筛选克隆的方法,该克隆的 DNA 来自未培养的微
生物,筛选方法是:(I) 从至少一种未培养的微
生物的 DNA 群体中回收 DNA;(ii) 用回收的 DNA 转化宿主,产生克隆库,筛选克隆库中的特定蛋白质活性。