Abstract
In Micrococcus luteus the incision event during repair of DNA containing pyrimidine dimers has been shown in vitro to be a two-step enzymatic reaction. The first step results in the cleavage of the N-glycosylic bond between the 5′-thymine moiety of the pyrimidine dimer and the deoxyribose generating an apyrimidinic site (Apy) and a thymine-thymidylate dimer attached to the DNA. The second catalytic step involves phosphodiester bond hydrolysis 3′ to the Apy site generating a nicked DNA with an Apy site at its 3′ terminus and the mixed thymine-thymidylate dimer at the 5′ terminus.
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© 1981 Plenum Press, New York
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Grafstrom, R., Shaper, N., Grossman, L., Haseltine, W. (1981). Incision of Pyrimidine Dimer Containing DNA by Small Molecular Weight Enzymes. In: Seeberg, E., Kleppe, K. (eds) Chromosome Damage and Repair. NATO Advanced Study Institutes Series, vol 40. Springer, New York, NY. https://doi.org/10.1007/978-1-4684-7956-0_11
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DOI: https://doi.org/10.1007/978-1-4684-7956-0_11
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