5V5H:
reference: Potent and selective inhibition of pathogenic viruses by engineered ubiquitin variants., Zhang W, Bailey-Elkin BA, Knaap RCM, Khare B, Dalebout TJ, Johnson GG, van Kasteren PB, McLeish NJ, Gu J, He W, Kikkert M, Mark BL, Sidhu SS, PLoS Pathog. 2017 May 18;13(5):e1006372. doi: 10.1371/journal.ppat.1006372., eCollection 2017 May. PMID: 28542609

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