| 1DFZ: reference: Structures of the contryphan family of cyclic peptides. Role of electrostatic interactions in cis-trans isomerism., Pallaghy PK, He W, Jimenez EC, Olivera BM, Norton RS, Biochemistry 2000 Oct 24;39(42):12845-52. PMID: 11041849 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).