1TGX:
reference: X-ray structure at 1.55 A of toxin gamma, a cardiotoxin from Naja nigricollis venom. Crystal packing reveals a model for insertion into membranes., Bilwes A, Rees B, Moras D, Menez R, Menez A, J Mol Biol 1994 May 27;239(1):122-36. PMID: 8196041

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