1OMB:
reference: Sequential assignment and structure determination of spider toxin omega-Aga-IVB., Yu H, Rosen MK, Saccomano NA, Phillips D, Volkmann RA, Schreiber SL, Biochemistry 1993 Dec 7;32(48):13123-9. PMID: 8241166

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