4M8D:
reference: A proton wire and water channel revealed in the crystal structure of isatin hydrolase., Bjerregaard-Andersen K, Sommer T, Jensen JK, Jochimsen B, Etzerodt M, Morth JP, J Biol Chem. 2014 Jun 10. pii: jbc.M114.568824. PMID: 24917679

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