4LO8:
reference: Structure of a bimodular botulinum neurotoxin complex provides insights into its oral toxicity., Lee K, Gu S, Jin L, Le TT, Cheng LW, Strotmeier J, Kruel AM, Yao G, Perry K, Rummel A, Jin R, PLoS Pathog. 2013 Oct;9(10):e1003690. doi: 10.1371/journal.ppat.1003690. Epub, 2013 Oct 10. PMID: 24130488

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