4GAD:
reference: Dramatic Structural Changes Resulting from the Loss of a Crucial Hydrogen Bond in the Hinge Region Involved in C-Terminal Helix Swapping in SurE: A Survival Protein from Salmonella typhimurium., Mathiharan YK, Pappachan A, Savithri HS, Murthy MR, PLoS One. 2013;8(2):e55978. doi: 10.1371/journal.pone.0055978. Epub 2013 Feb 7. PMID: 23409101

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