4MM3:
reference: Structural Basis for the Ubiquitin-Linkage Specificity and deISGylating activity of SARS-CoV papain-like protease., Ratia K, Kilianski A, Baez-Santos YM, Baker SC, Mesecar A, PLoS Pathog. 2014 May 22;10(5):e1004113. doi: 10.1371/journal.ppat.1004113., eCollection 2014 May. PMID: 24854014

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