3B1R:
reference: Structures of Burkholderia thailandensis nucleoside kinase: implications for the catalytic mechanism and nucleoside selectivity., Yasutake Y, Ota H, Hino E, Sakasegawa S, Tamura T, Acta Crystallogr D Biol Crystallogr. 2011 Nov;67(Pt 11):945-56. Epub 2011 Oct 19. PMID: 22101821

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