4QV6:
reference: Bortezomib-Resistant Mutant Proteasomes: Structural and Biochemical Evaluation with Carfilzomib and ONX 0914., Huber EM, Heinemeyer W, Groll M, Structure. 2015 Feb 3;23(2):407-17. doi: 10.1016/j.str.2014.11.019. Epub 2015 Jan, 15. PMID: 25599643

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