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. Author manuscript; available in PMC: 2022 Feb 27.
Published in final edited form as: DNA Repair (Amst). 2020 Dec 24;98:103029. doi: 10.1016/j.dnarep.2020.103029

Scheme 16.

Scheme 16.

Oxidative strand cleavage induced by abstraction of a C5’-hydrogen atom can generate a strand break with a 5’-dioxobutane (5’DOB) terminus on one side of the break. Reaction of the 5’DOB group with an adenine residue on the opposing strand of duplex DNA can generate a complex lesion composed of an ICL adjacent to a strand break.