4LHM:
reference: 3'-Azidothymidine in the active site of Escherichia coli thymidine phosphorylase: the peculiarity of the binding on the basis of X-ray study., Timofeev V, Abramchik Y, Zhukhlistova N, Muravieva T, Fateev I, Esipov R, Kuranova I, Acta Crystallogr D Biol Crystallogr. 2014 Apr;70(Pt 4):1155-65. doi:, 10.1107/S1399004714001904. Epub 2014 Mar 21. PMID: 24699659

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