1R4P:
reference: Structure of shiga toxin type 2 (Stx2) from Escherichia coli O157:H7., Fraser ME, Fujinaga M, Cherney MM, Melton-Celsa AR, Twiddy EM, O'Brien AD, James MN, J Biol Chem 2004 Jun 25;279(26):27511-7. Epub 2004 Apr 9. PMID: 15075327

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