3RX6:
reference: The first structure of polarity suppression protein, Psu from enterobacteria phage P4, reveals a novel fold and a knotted dimer., Banerjee R, Nath S, Ranjan A, Khamrui S, Pani B, Sen R, Sen U, J Biol Chem. 2012 Dec 28;287(53):44667-75. doi: 10.1074/jbc.M112.423202. Epub, 2012 Nov 12. PMID: 23150672

This OCA Structure page
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