1SM1:
reference: Alterations at the peptidyl transferase centre of the ribosome induced by the synergistic action of the streptogramins dalfopristin and quinupristin., Harms JM, Schlunzen F, Fucini P, Bartels H, Yonath A, BMC Biol 2004 Apr 1;2(1):4. PMID: 15059283

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