4HEI:
reference: Structure of Vibrio cholerae ribosome hibernation promoting factor., De Bari H, Berry EA, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2013 Mar 1;69(Pt 3):228-36., doi: 10.1107/S1744309113000961. Epub 2013 Feb 22. PMID: 23519794

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