3D5U:
reference: Structures of the wild-type and activated catalytic domains of Brachydanio rerio Polo-like kinase 1 (Plk1): changes in the active-site conformation and interactions with ligands., Elling RA, Fucini RV, Romanowski MJ, Acta Crystallogr D Biol Crystallogr. 2008 Sep;64(Pt 9):909-18. Epub 2008, Aug 13. PMID: 18703838

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