4RYU:
reference: Insights into stabilizing interactions in the distorted domain-swapped dimer of Salmonella typhimurium survival protein., Mathiharan YK, Savithri HS, Murthy MR, Acta Crystallogr D Biol Crystallogr. 2015 Sep;71(Pt 9):1812-23. doi:, 10.1107/S1399004715011992. Epub 2015 Aug 25. PMID: 26327371

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