3EFI:
reference: Carbonic anhydrase activators: kinetic and X-ray crystallographic study for the interaction of D- and L-tryptophan with the mammalian isoforms I-XIV., Temperini C, Innocenti A, Scozzafava A, Supuran CT, Bioorg Med Chem. 2008 Sep 15;16(18):8373-8. Epub 2008 Aug 26. PMID: 18774300

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