1V77:
reference: Crystal structure of the ribonuclease P protein Ph1877p from hyperthermophilic archaeon Pyrococcus horikoshii OT3., Takagi H, Watanabe M, Kakuta Y, Kamachi R, Numata T, Tanaka I, Kimura M, Biochem Biophys Res Commun 2004 Jul 2;319(3):787-94. PMID: 15184052

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