3D45:
reference: Structural basis of m(7)GpppG binding to poly(A)-specific ribonuclease., Wu M, Nilsson P, Henriksson N, Niedzwiecka A, Lim MK, Cheng Z, Kokkoris K, Virtanen A, Song H, Structure. 2009 Feb 13;17(2):276-86. doi: 10.1016/j.str.2008.11.012. PMID: 19217398

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