2C04:
reference: Nucleotide-binding flexibility in ultrahigh-resolution structures of the SRP GTPase Ffh., Ramirez UD, Focia PJ, Freymann DM, Acta Crystallogr D Biol Crystallogr. 2008 Oct;64(Pt 10):1043-53. Epub 2008, Sep 19. PMID: 18931411

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