3D3X:
reference: SNAP-25 substrate peptide (residues 180-183) binds to but bypasses cleavage by catalytically active Clostridium botulinum neurotoxin E., Agarwal R, Swaminathan S, J Biol Chem. 2008 Sep 19;283(38):25944-51. Epub 2008 Jul 25. PMID: 18658150

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