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Apurinic DNA Endonuclease

A DNA Repair enzyme that Catalyses the excision of Ribose residues at apurinic and apyrimidinic DNA sites that can result from the action of DNA Glycosylases. The enzyme catalyzes a beta-elimination reaction in which the C-O-P bond 3' to the apurinic or apyrimidinic site in DNA is broken, leaving a 3'-terminal unsaturated sugar and a product with a terminal 5'-phosphate. This enzyme was previously listed under EC 3.1.25.2.