1LS2:
reference: Cryo-EM reveals an active role for aminoacyl-tRNA in the accommodation process., Valle M, Sengupta J, Swami NK, Grassucci RA, Burkhardt N, Nierhaus KH, Agrawal RK, Frank J, EMBO J 2002 Jul 1;21(13):3557-67. PMID: 12093756

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