| 1JCD: reference: An alanine-zipper structure determined by long range intermolecular interactions., Liu J, Lu M, J Biol Chem 2002 Dec 13;277(50):48708-13. Epub 2002 Oct 3. PMID: 12368282 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).