3ONS:
reference: The structure of human ubiquitin in 2-methyl-2,4-pentanediol: a new conformational switch., Huang KY, Amodeo GA, Tong L, McDermott A, Protein Sci. 2011 Mar;20(3):630-9. doi: 10.1002/pro.584. PMID: 21432937

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