Production of enzymes having desired activities by mutagenesis
First Claim
1. A process for obtaining a specified protein or enzymatic activity of interest encoded by DNA contained in a heterogeneous population of microorganisms comprising:
- (a) screening a library containing a plurality of clones containing DNA isolated from a heterogeneous population of microorganisms for a specified protein or enzymatic activity;
(b) isolating a clone which is positive for the specified activity;
(c) introducing at least one mutation into the DNA contained in the clone of (b);
and(d) comparing the activity of a DNA expression product from (c) with the activity encoded by a non-mutagenized form of the DNA present in (b), wherein a difference in activity is indicative of an effect of introducing at least one mutation, thereby providing the specified protein or enzymatic activity of interest.
4 Assignments
0 Petitions
Accused Products
Abstract
Disclosed is a process for obtaining an enzyme having a specified enzyme activity derived from a heterogeneous DNA population by screening, for the specified enzyme activity, a library of clones containing DNA from the heterogeneous DNA population which have been exposed to directed mutagenesis towards production of the specified enzyme activity. Also disclosed is a process for obtaining an enzyme having a specified enzyme activity by screening, for the specified enzyme activity, a library of clones containing DNA from a pool of DNA populations which have been exposed to directed mutagenesis in an attempt to produce in the library of clones DNA encoding an enzyme having one or more desired characteristics which can be the same or different from the specified enzyme activity.
-
Citations
12 Claims
-
1. A process for obtaining a specified protein or enzymatic activity of interest encoded by DNA contained in a heterogeneous population of microorganisms comprising:
-
(a) screening a library containing a plurality of clones containing DNA isolated from a heterogeneous population of microorganisms for a specified protein or enzymatic activity; (b) isolating a clone which is positive for the specified activity; (c) introducing at least one mutation into the DNA contained in the clone of (b); and (d) comparing the activity of a DNA expression product from (c) with the activity encoded by a non-mutagenized form of the DNA present in (b), wherein a difference in activity is indicative of an effect of introducing at least one mutation, thereby providing the specified protein or enzymatic activity of interest. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A process for obtaining an enzyme having a specified enzyme activity, comprising:
screening a heterogenous population of DNA obtained from a pool of DNA populations containing a plurality of activities and which have been modified by mutagenesis, for an enzyme having one or more desired characteristics which can be the same or different from the specified enzyme activity. - View Dependent Claims (8, 9, 10, 11, 12)
Specification