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Structures of Coupled Complexes
Structures of the expressome (A) and an RNAP:30S complex (B) determined by cryo-EM. RNAP and ribosomal subunits are in surface representation, NusG is shown as ribbon. αI, orange; αII green; β, cyan; β′, light violet; 30S, yellow; 50S, light blue; β′CH, pink; S10, dark blue. PDB IDs: expressome, 5MY1 and 6O9J; RNAP:30S, 6AWD; NusG-NTD: 2K06; NusG-CTD: 2JVV.
