4V7F:
reference: 60S ribosome biogenesis requires rotation of the 5S ribonucleoprotein particle., Leidig C, Thoms M, Holdermann I, Bradatsch B, Berninghausen O, Bange G, Sinning I, Hurt E, Beckmann R, Nat Commun. 2014 Mar 24;5:3491. doi: 10.1038/ncomms4491. PMID: 24662372

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