2QTT:
reference: Molecular Determinants of Substrate Specificity in Plant 5'-Methylthioadenosine Nucleosidases., Siu KK, Lee JE, Sufrin JR, Moffatt BA, McMillan M, Cornell KA, Isom C, Howell PL, J Mol Biol. 2008 Feb 8;. PMID: 18342331

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