3HB8:
reference: Structures of human thymidylate synthase R163K with dUMP, FdUMP and glutathione show asymmetric ligand binding., Gibson LM, Celeste LR, Lovelace LL, Lebioda L, Acta Crystallogr D Biol Crystallogr. 2011 Jan;67(Pt 1):60-6. Epub 2010 Dec 16. PMID: 21206062

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