Methods and compositions for polypeptide engineering
First Claim
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1. A method for evolving a protein having at least two subunits, comprising:
- a) providing a library of mutant DNA substrate molecules for each subunit;
b) recombining the libraries into a library of single-chain constructs of the protein, the single chain construct comprising a DNA substrate molecule encoding each subunit sequence, the subunit sequence being linked by a linker at a nucleic acid sequence encoding the amino terminus of one subunit to a nucleic acid sequence encoding the carboxy terminus of a second subunit;
c) screening or selecting the products of (b);
d) recovering recombinant single chain construct DNA substrate molecules from the products of (c);
e) subjecting the products of (d) to mutagenesis; and
f) recovering an evolved single chain construct DNA substrate from (e).
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Abstract
Methods are provided for the evolution of proteins of industrial and pharmaceutical interest, including methods for effecting recombination and selection. Compositions produced by these methods are also disclosed.
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8 Claims
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1. A method for evolving a protein having at least two subunits, comprising:
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a) providing a library of mutant DNA substrate molecules for each subunit; b) recombining the libraries into a library of single-chain constructs of the protein, the single chain construct comprising a DNA substrate molecule encoding each subunit sequence, the subunit sequence being linked by a linker at a nucleic acid sequence encoding the amino terminus of one subunit to a nucleic acid sequence encoding the carboxy terminus of a second subunit; c) screening or selecting the products of (b); d) recovering recombinant single chain construct DNA substrate molecules from the products of (c); e) subjecting the products of (d) to mutagenesis; and f) recovering an evolved single chain construct DNA substrate from (e). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification