2MME:
reference: High-resolution structure of the Shigella type-III secretion needle by solid-state NMR and cryo-electron microscopy., Demers JP, Habenstein B, Loquet A, Kumar Vasa S, Giller K, Becker S, Baker D, Lange A, Sgourakis NG, Nat Commun. 2014 Sep 29;5:4976. doi: 10.1038/ncomms5976. PMID: 25264107

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