3JQ4:
reference: The structure of ribosome-lankacidin complex reveals ribosomal sites for synergistic antibiotics., Auerbach T, Mermershtain I, Davidovich C, Bashan A, Belousoff M, Wekselman I, Zimmerman E, Xiong L, Klepacki D, Arakawa K, Kinashi H, Mankin AS, Yonath A, Proc Natl Acad Sci U S A. 2010 Feb 2;107(5):1983-8. Epub 2010 Jan 11. PMID: 20080686

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