4ZTU:
reference: Structural basis for processivity and antiviral drug toxicity in human mitochondrial DNA replicase., Szymanski MR, Kuznetsov VB, Shumate C, Meng Q, Lee YS, Patel G, Patel S, Yin YW, EMBO J. 2015 Jul 14;34(14):1959-70. doi: 10.15252/embj.201591520. Epub 2015 Jun, 8. PMID: 26056153

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