3NBF:
reference: Changing nucleotide specificity of the DEAD-box helicase Hera abrogates communication between the Q-motif and the P-loop., Strohmeier J, Hertel I, Diederichsen U, Rudolph MG, Klostermeier D, Biol Chem. 2011 Apr;392(4):357-69. PMID: 21391900

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