| 3I2D: reference: Structure of the Siz/PIAS SUMO E3 ligase Siz1 and determinants required for SUMO modification of PCNA., Yunus AA, Lima CD, Mol Cell. 2009 Sep 11;35(5):669-82. PMID: 19748360 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).