3Q8Q:
reference: Unique active site promotes error-free replication opposite an 8-oxo-guanine lesion by human DNA polymerase iota., Kirouac KN, Ling H, Proc Natl Acad Sci U S A. 2011 Feb 22;108(8):3210-5. Epub 2011 Feb 7. PMID: 21300901

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