5CLU:
reference: A Combined Crystallographic and Theoretical Study Explains the Capability of Carboxylic Acids to Adopt Multiple Binding Modes in the Active Site of Carbonic Anhydrases., Langella E, D'Ambrosio K, D'Ascenzio M, Carradori S, Monti SM, Supuran CT, De Simone G, Chemistry. 2016 Jan 4;22(1):97-100. doi: 10.1002/chem.201503748. Epub 2015 Nov, 30. PMID: 26507456

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