6GGZ:
reference: Synthesis by native chemical ligation and characterization of the scorpion toxin AmmTx3., Zoukimian C, Meudal H, De Waard S, Ouares KA, Nicolas S, Canepari M, Beroud R, Landon C, De Waard M, Boturyn D, Bioorg Med Chem. 2019 Jan 1;27(1):247-253. doi: 10.1016/j.bmc.2018.12.009. Epub, 2018 Dec 6. PMID: 30529150

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