2HW0:
reference: Solution structure, divalent metal and DNA binding of the endonuclease domain from the replication initiation protein from porcine circovirus 2., Vega-Rocha S, Byeon IJ, Gronenborn B, Gronenborn AM, Campos-Olivas R, J Mol Biol. 2007 Mar 23;367(2):473-87. Epub 2007 Jan 9. PMID: 17275023

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