4XID:
reference: Entropic Enhancement of Protein-DNA Affinity by Oxygen-to-Sulfur Substitution in DNA Phosphate., Zandarashvili L, Nguyen D, Anderson KM, White MA, Gorenstein DG, Iwahara J, Biophys J. 2015 Sep 1;109(5):1026-37. doi: 10.1016/j.bpj.2015.07.032. PMID: 26331260

This OCA Structure page
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