1JX4:
reference: Crystal structure of a Y-family DNA polymerase in action: a mechanism for error-prone and lesion-bypass replication., Ling H, Boudsocq F, Woodgate R, Yang W, Cell 2001 Oct 5;107(1):91-102. PMID: 11595188

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