4O5C:
reference: Transition-state destabilization reveals how human DNA polymerase beta proceeds across the chemically unstable lesion N7-methylguanine., Koag MC, Kou Y, Ouzon-Shubeita H, Lee S, Nucleic Acids Res. 2014 Jun 25. pii: gku554. PMID: 24966350

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).