1Y6Q:
reference: Structural Rationale for the Affinity of Pico- and Femtomolar Transition State Analogues of Escherichia coli 5'-Methylthioadenosine/S-Adenosylhomocysteine Nucleosidase., Lee JE, Singh V, Evans GB, Tyler PC, Furneaux RH, Cornell KA, Riscoe MK, Schramm VL, Howell PL, J Biol Chem 2005 May 6;280(18):18274-82. Epub 2005 Mar 3. PMID: 15746096

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