5KJS:
reference: Dynamic Conformational States Dictate Selectivity toward the Native Substrate in a Substrate-Permissive Acyltransferase., Levsh O, Chiang YC, Tung CF, Noel JP, Wang Y, Weng JK, Biochemistry. 2016 Nov 2. PMID: 27805809

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