2BPC:
reference: Crystal structure of rat DNA polymerase beta: evidence for a common polymerase mechanism., Sawaya MR, Pelletier H, Kumar A, Wilson SH, Kraut J, Science 1994 Jun 24;264(5167):1930-5. PMID: 7516581

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