1ZJG:
reference: Influence of ions, hydration, and the transcriptional inhibitor P4N on the conformations of the Sp1 binding site., Dohm JA, Hsu MH, Hwu JR, Huang RC, Moudrianakis EN, Lattman EE, Gittis AG, J Mol Biol 2005 Jun 17;349(4):731-44. Epub 2005 Apr 15. PMID: 15896803

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