1CK1:
reference: Zinc-mediated dimerization and its effect on activity and conformation of staphylococcal enterotoxin type C., Chi YI, Sadler I, Jablonski LM, Callantine SD, Deobald CF, Stauffacher CV, Bohach GA, J Biol Chem 2002 Jun 21;277(25):22839-46. PMID: 11934896

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