5YHF:
reference: Remote Coupled Drastic beta-Barrel to beta-Sheet Transition of the Protein Translocation Motor., Furukawa A, Nakayama S, Yoshikaie K, Tanaka Y, Tsukazaki T, Structure. 2018 Jan 26. pii: S0969-2126(18)30002-9. doi:, 10.1016/j.str.2018.01.002. PMID: 29398525

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