6M53:
reference: 2,3-Dihydroxybenzoic Acid Decarboxylase from Fusarium oxysporum: Crystal Structures and Substrate Recognition Mechanism., Song M, Zhang X, Liu W, Feng J, Cui Y, Yao P, Wang M, Guo RT, Wu Q, Zhu D, Chembiochem. 2020 Oct 15;21(20):2950-2956. doi: 10.1002/cbic.202000244. Epub 2020, Jul 2. PMID: 32421914

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