| 3F1W: reference: Structure of a mutant form of proliferating cell nuclear antigen that blocks translesion DNA synthesis., Freudenthal BD, Ramaswamy S, Hingorani MM, Washington MT, Biochemistry. 2008 Dec 16;47(50):13354-61. PMID: 19053247 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).