6QFX:
reference: Chemical Optimization of Whole-Cell Transfer Hydrogenation Using Carbonic Anhydrase as Host Protein., Rebelein JG, Cotelle Y, Garabedian B, Ward TR, ACS Catal. 2019 May 3;9(5):4173-4178. doi: 10.1021/acscatal.9b01006. Epub 2019, Apr 5. PMID: 31080690

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