1NJP:
reference: Structural basis of the ribosomal machinery for peptide bond formation, translocation, and nascent chain progression., Bashan A, Agmon I, Zarivach R, Schluenzen F, Harms J, Berisio R, Bartels H, Franceschi F, Auerbach T, Hansen HA, Kossoy E, Kessler M, Yonath A, Mol Cell 2003 Jan;11(1):91-102. PMID: 12535524

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