5ZGO:
reference: Structural and functional characterization of thermostable biocatalysts for the synthesis of 6-aminopurine nucleoside-5'-monophospate analogues., Arco JD, Perez E, Naitow H, Matsuura Y, Kunishima N, Fernandez-Lucas J, Bioresour Technol. 2019 Mar;276:244-252. doi: 10.1016/j.biortech.2018.12.120., Epub 2019 Jan 3. PMID: 30640018

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