5GTD:
reference: Mechanistic Insights from the Crystal Structure of Bacillus subtilis o-Succinylbenzoyl-CoA Synthetase Complexed with the Adenylate Intermediate., Chen Y, Jiang Y, Guo Z, Biochemistry. 2016 Dec 6;55(48):6685-6695. Epub 2016 Nov 28. PMID: 27933791

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