Method to protect DNA ends

Chemistry: natural resins or derivatives; peptides or proteins; – Proteins – i.e. – more than 100 amino acid residues

Reexamination Certificate

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Reexamination Certificate

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07550564

ABSTRACT:
A method of protecting the 3′ end of a DNA molecule from nuclease damage is disclosed. In one embodiment, the method comprises the step of exposing the DNA molecule to a preparation of DdrA protein.

REFERENCES:
Carroll et al. (“Expression of recA in Deinococcus radiodurans” J Bacteriol. Jan. 1996;178(1):130-5).
Bernstein D, et al., “Crystal structure of the Deinococcus radiodurans single-stranded DNA-binding protein suggests a mechanism for coping with DNA damage,” Proc. Natl. Acad. Sci. USA 101:8575-8580 (2004).
Clark A, “rec genes and homologous recombination proteins inEscherichia coli,” Biochimie. 73:523-532 (1991).
Harris D, et al., “Preserving genome integrity: the DdrA protein of Deinococcus radiodurans R1,” PLoS Biol. 2:e304 (2004).
Tanaka M, et al., “Analysis of Deinococcus radiodurans's transcriptional response to ionizing radiation and desiccation reveals novel proteins that contribute to extreme radioresistance,” Genetics 168:21-33 (2004).

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