4WAM:
reference: Allosteric Reversion of Haemophilus influenzae beta-Carbonic Anhydrase via a Proline Shift., Hoffmann KM, Million-Perez HR, Merkhofer R, Nicholson H, Rowlett RS, Biochemistry. 2014 Dec 24. PMID: 25506786

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