8ICS:
reference: A structural basis for metal ion mutagenicity and nucleotide selectivity in human DNA polymerase beta., Pelletier H, Sawaya MR, Wolfle W, Wilson SH, Kraut J, Biochemistry. 1996 Oct 1;35(39):12762-77. PMID: 8841119

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