3JVV:
reference: P. aeruginosa PilT Structures with and without Nucleotide Reveal a Dynamic Type IV Pilus Retraction Motor., Misic AM, Satyshur KA, Forest KT, J Mol Biol. 2010 Jul 30;400(5):1011-1021. Epub 2010 Jun 1. PMID: 20595000

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