6CT8:
reference: R pyocin tail fiber structure reveals a receptor-binding domain with a lectin fold., Salazar AJ, Sherekar M, Tsai J, Sacchettini JC, PLoS One. 2019 Feb 5;14(2):e0211432. doi: 10.1371/journal.pone.0211432., eCollection 2019. PMID: 30721244

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