4MDF:
reference: Structures of bacterial polynucleotide kinase in a Michaelis complex with GTP*Mg2+ and 5'-OH oligonucleotide and a product complex with GDP*Mg2+ and 5'-PO4 oligonucleotide reveal a mechanism of general acid-base catalysis and the determinants of phosphoacceptor recognition., Das U, Wang LK, Smith P, Jacewicz A, Shuman S, Nucleic Acids Res. 2013 Oct 22. PMID: 24150947

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