4UCG:
reference: The Functional Unit of Neisseria meningitidis 3-Deoxy--Arabino-Heptulosonate 7-Phosphate Synthase Is Dimeric., Cross PJ, Heyes LC, Zhang S, Nazmi AR, Parker EJ, PLoS One. 2016 Feb 1;11(2):e0145187. doi: 10.1371/journal.pone.0145187., eCollection 2016. PMID: 26828675

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