1AY8:
reference: Crystal structures of Paracoccus denitrificans aromatic amino acid aminotransferase: a substrate recognition site constructed by rearrangement of hydrogen bond network., Okamoto A, Nakai Y, Hayashi H, Hirotsu K, Kagamiyama H, J Mol Biol 1998 Jul 17;280(3):443-61. PMID: 9665848

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