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. Author manuscript; available in PMC: 2021 Jun 1.
Published in final edited form as: DNA Repair (Amst). 2020 Apr 30;90:102866. doi: 10.1016/j.dnarep.2020.102866

Fig. 1.

Fig. 1.

Mechanisms of AP site formation. A. Potential sources of AP site formation. B. Destabilization of N-glyosidic bond after base damage generates AP site. Spontaneous or catalyzed deamination of cytosine generates uracil. Subsequent action of UDG produces an AP site.