3HO6:
reference: Structure-function analysis of inositol hexakisphosphate-induced autoprocessing in Clostridium difficile toxin A., Pruitt RN, Chagot B, Cover M, Chazin WJ, Spiller B, Lacy DB, J Biol Chem. 2009 Aug 14;284(33):21934-40. Epub 2009 Jun 24. PMID: 19553670

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