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The interface of two adjacent monomers in the PaeHfq hexamer. The main chains of the monomers are shown in green and yellow. Side chains are shown for residue 57 only. Hydrogen bonds are shown as dotted lines. (a) The wild-type PaeHfq crystal structure. (b) The H57A PaeHfq crystal structure. (c) The H57T PaeHfq crystal structure.
