Methods and compositions for inactivation of dihydrofolate reductase
First Claim
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1. A protein comprising an engineered zinc finger protein DNA-binding domain, wherein the DNA-binding domain comprises four zinc finger recognition regions ordered F1 to F4 from N-terminus to C-terminus, and wherein F1, F2, F3, and F4 comprise the following amino acid sequences:
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Abstract
Disclosed herein are methods and compositions for inactivating dihydrofolate reductase genes, using fusion proteins comprising a zinc finger protein and a cleavage domain or cleavage half-domain. Polynucleotides encoding said fusion proteins are also provided, as are cells comprising said polynucleotides and fusion proteins.
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Citations
23 Claims
- 1. A protein comprising an engineered zinc finger protein DNA-binding domain, wherein the DNA-binding domain comprises four zinc finger recognition regions ordered F1 to F4 from N-terminus to C-terminus, and wherein F1, F2, F3, and F4 comprise the following amino acid sequences:
- 2. A protein comprising an engineered zinc finger protein DNA-binding domain, wherein the DNA-binding domain comprises four zinc finger recognition regions ordered F1 to F4 from N-terminus to C-terminus, and wherein F1, F2, F3, and F4 comprise the following amino acid sequences:
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15. A method for inactivating an endogenous dhfr gene in a cell, the method comprising:
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(a) introducing, into a cell, a first nucleic acid encoding a first polypeptide, wherein the first polypeptide comprises;
(i) a zinc finger DNA-binding domain that is engineered to bind to a first target site in an endogenous dhfr gene; and
(ii) a cleavage domain;
such that the polypeptide is expressed in the cell, whereby the polypeptide binds to the target site and cleaves the dhfr. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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Specification