A mouse DNA repair enzyme (APEX nuclease) having exonuclease and apurinic/apyrimidinic endonuclease activities: purification and characterization.


A mouse repair enzyme having priming activity on bleomycin-damaged DNA for DNA polymerase was purified to apparent homogeneity and characterized. The enzyme extracted from permeabilized mouse ascites sarcoma (SR-C3H/He) cells with 0.2 M potassium phosphate buffer (pH 7.5) was purified by successive chromatographies on phosphocellulose, DEAE-cellulose… (More)


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