3A8O:
reference: Kinetic and structural studies on roles of the serine ligand and a strictly conserved tyrosine residue in nitrile hydratase., Yamanaka Y, Hashimoto K, Ohtaki A, Noguchi K, Yohda M, Odaka M, J Biol Inorg Chem. 2010 Mar 10. PMID: 20221653

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