1EHS:
reference: The structure of Escherichia coli heat-stable enterotoxin b by nuclear magnetic resonance and circular dichroism., Sukumar M, Rizo J, Wall M, Dreyfus LA, Kupersztoch YM, Gierasch LM, Protein Sci 1995 Sep;4(9):1718-29. PMID: 8528070

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