3ZGX:
reference: An asymmetric SMC-kleisin bridge in prokaryotic condensin., Burmann F, Shin HC, Basquin J, Soh YM, Gimenez-Oya V, Kim YG, Oh BH, Gruber S, Nat Struct Mol Biol. 2013 Jan 27;20(3):371-9. doi: 10.1038/nsmb.2488. Epub 2013, Jan 27. PMID: 23353789

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