apurinic sites
Sites in DNA from which purines have been lost by cleavage of the deoxy-ribose N-glycosidic linkage.

Dictionary of molecular biology. 2004.

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  • AP site — An AP site (meaning apurinic and apyrimidinic) is a location in DNA that have neither a purine nor pyrimidine base, usually due to DNA damage.If left unrepaired AP sites can lead to mutation during semiconservative replication as a random… …   Wikipedia

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