HEADER RIBOSOME,TRANSCRIPTION/TRANSLATION 31-DEC-69 6X7K TITLE Cryo-EM structure of an Escherichia coli coupled TITLE 2 transcription-translation complex B3 (TTC-B3) containing an mRNA with TITLE 3 a 24 nt long spacer, transcription factors NusA and NusG, and TITLE 4 fMet-tRNAs at P-site and E-site COMPND MOL_ID: 65; COMPND 2 MOLECULE: 50S ribosomal protein L19; COMPND 3 CHAIN: y; COMPND 4 ENGINEERED: YES; EXPDTA ELECTRON MICROSCOPY SEQRES 1 y 114 SER ASN ILE ILE LYS GLN LEU GLU GLN GLU GLN MET LYS SEQRES 2 y 114 GLN ASP VAL PRO SER PHE ARG PRO GLY ASP THR VAL GLU SEQRES 3 y 114 VAL LYS VAL TRP VAL VAL GLU GLY SER LYS LYS ARG LEU SEQRES 4 y 114 GLN ALA PHE GLU GLY VAL VAL ILE ALA ILE ARG ASN ARG SEQRES 5 y 114 GLY LEU HIS SER ALA PHE THR VAL ARG LYS ILE SER ASN SEQRES 6 y 114 GLY GLU GLY VAL GLU ARG VAL PHE GLN THR HIS SER PRO SEQRES 7 y 114 VAL VAL ASP SER ILE SER VAL LYS ARG ARG GLY ALA VAL SEQRES 8 y 114 ARG LYS ALA LYS LEU TYR TYR LEU ARG GLU ARG THR GLY SEQRES 9 y 114 LYS ALA ALA ARG ILE LYS GLU ARG LEU ASN