5UVR:
reference: Conserved, unstructured regions in Pseudomonas aeruginosa PilO are important for type IVa pilus function., Leighton TL, Mok MC, Junop MS, Howell PL, Burrows LL, Sci Rep. 2018 Feb 8;8(1):2600. doi: 10.1038/s41598-018-20925-w. PMID: 29422606

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