Method for screening for enzyme activity
First Claim
1. A method for enriching for DNA sequences containing at least a partial coding region for at least one specified enzyme activity in a DNA sample comprising selecting and recovering a mixture of target DNA from a mixture of organisms, by use of a mixture of DNA probes comprising at least a portion of a DNA sequence encoding at least one enzyme having a specified enzyme activity and transforming host cells with recovered target DNA to produce an expression library of a plurality of clones.
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Abstract
Disclosed is a process for identifying clones having a specified enzyme activity by screening for the specified enzyme activity in a library of clones prepared by (i) selectively isolating target DNA from DNA derived from at least one microorganism, by use of at least one probe DNA comprising at least a portion of a DNA sequence encoding an enzyme having the specified enzyme activity; and (ii) transforming a host with isolated target DNA to produce a library of clones which are screened for the specified enzyme activity.
205 Citations
24 Claims
- 1. A method for enriching for DNA sequences containing at least a partial coding region for at least one specified enzyme activity in a DNA sample comprising selecting and recovering a mixture of target DNA from a mixture of organisms, by use of a mixture of DNA probes comprising at least a portion of a DNA sequence encoding at least one enzyme having a specified enzyme activity and transforming host cells with recovered target DNA to produce an expression library of a plurality of clones.
- 20. A method for making a gene library, comprising randomly concatenating cDNA or genomic DNA fragments obtained from one or more species of uncultured organisms, and ligating the concatenated DNA fragments to a DNA vector to generate a library of constructs in which genes are contained in the cDNA or genomic DNA fragments.
Specification