4J7B:
reference: Structural basis for the inhibition of Polo-like kinase 1., Xu J, Shen C, Wang T, Quan J, Nat Struct Mol Biol. 2013 Sep;20(9):1047-53. doi: 10.1038/nsmb.2623. Epub 2013, Jul 28. PMID: 23893132

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