3ZQ7:
reference: Structure-function studies of DNA binding domain of response regulator KdpE reveals equal affinity interactions at DNA half-sites., Narayanan A, Paul LN, Tomar S, Patil DN, Kumar P, Yernool DA, PLoS One. 2012;7(1):e30102. Epub 2012 Jan 23. PMID: 22291906

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