6POR:
reference: Discovery of ubonodin, an antimicrobial lasso peptide active against members of the Burkholderia cepacia complex., Cheung-Lee WL, Parry M, Zong C, Jaramillo Cartagena A, Darst S, Connell N, Russo R, Link AJ, Chembiochem. 2019 Nov 25. doi: 10.1002/cbic.201900707. PMID: 31765515

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