1CHL:
reference: NMR sequential assignments and solution structure of chlorotoxin, a small scorpion toxin that blocks chloride channels., Lippens G, Najib J, Wodak SJ, Tartar A, Biochemistry 1995 Jan 10;34(1):13-21. PMID: 7819188

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