2HHU: C:O6-Methyl-Guanine In The Polymerase Postinsertion Site (-1 Position)
reference: The structural basis for the mutagenicity of O6-methyl-guanine lesions., Warren JJ, Forsberg LJ, Beese LS, Proc Natl Acad Sci U S A. 2006 Dec 26;103(52):19701-6. Epub 2006 Dec 18. PMID: 17179038

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