2YCH:
reference: Structure of the PilM-PilN inner membrane type IV pilus biogenesis complex from Thermus thermophilus., Karuppiah V, Derrick JP, J Biol Chem. 2011 Jul 8;286(27):24434-42. Epub 2011 May 19. PMID: 21596754

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