3QHS:
reference: Structural analysis of full-length Hfq from Escherichia coli., Beich-Frandsen M, Vecerek B, Sjoblom B, Blasi U, Djinovic-Carugo K, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2011 May 1;67(Pt, 5):536-40. Epub 2011 Apr 20. PMID: 21543856

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