5YK4:
reference: Mechanism of formation of a toroid around DNA by the mismatch sensor protein., Nirwal S, Kulkarni DS, Sharma A, Rao DN, Nair DT, Nucleic Acids Res. 2017 Nov 22. pii: 4647669. doi: 10.1093/nar/gkx1149. PMID: 29182773

This OCA Structure page
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