2YX0:
reference: Structure of an archaeal TYW1, the enzyme catalyzing the second step of wye-base biosynthesis., Goto-Ito S, Ishii R, Ito T, Shibata R, Fusatomi E, Sekine SI, Bessho Y, Yokoyama S, Acta Crystallogr D Biol Crystallogr. 2007 Oct;63(Pt 10):1059-68. Epub 2007, Sep 19. PMID: 17881823

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