| 4LPC: reference: Crystal Structures of Escherichia coli Branching Enzyme in Complex with Linear Oligosaccharides., Feng L, Fawaz R, Hovde S, Gilbert L, Chiou J, Geiger JH, Biochemistry. 2015 Sep 25. PMID: 26280198 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).