4ITB:
reference: Structural Basis for a Cofactor-dependent Oxidation Protection and Catalysis of Cyanobacterial Succinic Semialdehyde Dehydrogenase., Park J, Rhee S, J Biol Chem. 2013 May 31;288(22):15760-70. doi: 10.1074/jbc.M113.460428. Epub, 2013 Apr 15. PMID: 23589281

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