4GZ1:
reference: Mechanism of repair of 5'-topoisomerase II-DNA adducts by mammalian tyrosyl-DNA phosphodiesterase 2., Schellenberg MJ, Appel CD, Adhikari S, Robertson PD, Ramsden DA, Williams RS, Nat Struct Mol Biol. 2012 Oct 28. doi: 10.1038/nsmb.2418. PMID: 23104055

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