4ZSF:
reference: Functional significance of protein assemblies predicted by the crystal structure of the restriction endonuclease BsaWI., Tamulaitis G, Rutkauskas M, Zaremba M, Grazulis S, Tamulaitiene G, Siksnys V, Nucleic Acids Res. 2015 Sep 18;43(16):8100-10. doi: 10.1093/nar/gkv768. Epub 2015, Aug 3. PMID: 26240380

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