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PubMed1990

Low concentrations of acridine dimers inhibit micrococcus AP endonuclease through interaction with apurinic sites in DNA.

The effect of dimeric DNA intercalating compounds was assayed on a purified AP endonuclease from Microccoccus luteus using apurinic supercoiled PM2 DNA as a substrate. Binding on apurinic sites was estimated through the competition with the intercalating compound, 9-NH2-ellipticine, which displays great specificity for apurinic sites. An acridine dimer with a spermine linker is at 0.1 microM the best inhibitor of cleavage at the apurinic site induced either by the AP endonuclease or by 9-NH2-ellipticine. Bisintercalating agents are more effective inhibitors of AP endonuclease than monointercalating ones. Most effective inhibitors among dimers have acridine residues.

Acridines↗