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Maintaining genome integrity in germ cells is important, given that the germ cells produce the next generation of offspring. Base excision repair is a DNA repair pathway that is responsible for the repair of most endogenous DNA damage. A key enzyme that functions in this repair pathway is DNA polymerase beta (Pol β). We previously used conditional gene targeting to engineer mice with sperm deleted...
The X family of DNA polymerases in eukaryotic cells consists of terminal transferase and DNA polymerases β, λ, and μ. These enzymes have similar structural portraits, yet different biochemical properties, especially in their interactions with DNA. None of these enzymes possesses a proofreading subdomain, and their intrinsic fidelity of DNA synthesis is much lower than that of a polymerase that functions...
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