Altered recombinases for genome modification

Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives

Reexamination Certificate

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C435S320100

Reexamination Certificate

active

07732585

ABSTRACT:
The present invention describes methods of identifying altered recombinases and compositions thereof, wherein at least one amino acid is different from a parent, wild-type recombinase and the altered recombinase has improved recombination efficiency towards wild-type and/or pseudo att site sequences relative to the parent, wild-type recombinase. The present invention also includes methods of modifying the genomes of cells using the altered recombinases, including methods of site-specifically integrating a polynucleotide sequence of interest in a genome of a eucaryotic cell.

REFERENCES:
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Fox, et al.,ASM News, 66(2):1-3 (Feb. 2000).
Hartung, et al., “CRE Mutants with Altered DNA Binding Properties,”J. Biol. Chem., 273-22884-22891 (1998).
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Verma, et al.,Nature389:239-242 (1997).

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