Cryo-EM structure of an Escherichia coli TnaC(R23F)-ribosome complex stalled in response to L-tryptophan

2026-06-24 REL PDBe INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY EXPERIMENTAL_SUMMARY em_admin _em_admin.last_update EXPERIMENTAL_SUMMARY em_admin struct_ref _em_admin.last_update _struct_ref.pdbx_seq_one_letter_code STRUCTURE_SUMMARY em_admin em_entity_assembly_molwt pdbx_entry_details pdbx_modification_feature _em_admin.last_update _em_entity_assembly_molwt.id _pdbx_entry_details.has_protein_modification DATA_COLLECTION chem_comp_atom chem_comp_bond em_admin _chem_comp_atom.atom_id _chem_comp_atom.pdbx_aromatic_flag _chem_comp_bond.atom_id_1 _chem_comp_bond.atom_id_2 _chem_comp_bond.pdbx_aromatic_flag _chem_comp_bond.value_order _em_admin.last_update DATABASE_REFERENCES atom_site chem_comp_atom chem_comp_bond em_admin struct_ref _atom_site.auth_atom_id _atom_site.label_atom_id _chem_comp_atom.atom_id _chem_comp_bond.atom_id_1 _chem_comp_bond.atom_id_2 _em_admin.last_update _struct_ref.pdbx_seq_one_letter_code PDBe PDBe 2021-03-29 2021-09-01 2021-09-01 2026-06-24 European Research Council (ERC) 724040 France National Science Foundation (NSF, United States) MCB-1158271 United States National Science Foundation (NSF, United States) MCB-1951405 United States National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) R01 GM47498 United States Cryo-EM structure of an Escherichia coli TnaC(R23F)-ribosome complex stalled in response to L-tryptophan van der Stel AX Gordon ER ribosome, regulation, TnaC, arrest peptide, L-tryptophan, translation, indole, stalling van der Stel AX Gordon ER Sengupta A Martinez AK Klepacki D Perry TN Herrero Del Valle A Vazquez-Laslop N Sachs MS Cruz-Vera LR Innis CA Structural basis for the tryptophan sensitivity of TnaC-mediated ribosome stalling. Nat Commun UK 12 5340 5340 2021 34504068 doi:10.1038/s41467-021-25663-8 2041-1723 7o1a FULLOVERLAP PDB 7O19 unspecified

70S-TnaC-WT

PDB 7O1C unspecified

70S-TnaC-(R23F)-RF2

EMDB EMD-12694 associated EM volume

Cryo-EM structure of an Escherichia coli TnaC(R23F)-ribosome complex stalled in response to L-tryptophan

70S ribosome stalled during translation of TnaC(R23F) with Pro24 in the P-site. 70S ribosome stalled during translation of TnaC(R23F) with Pro24 in the P-site. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55

mRNA was translated in vitro using an S30 extract-based system, to obtain a stalled 70S:TnaC(R23F):tRNA-Pro:mRNA:L-Trp complex.

Escherichia coli K-12 30S subunit 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Escherichia coli K-12 50S subunit 1 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 Escherichia coli K-12 P-site tRNA-Pro - TnaC-(R23F) nascent chain 1 53 55 Escherichia coli K-12 mRNA 1 54 Escherichia coli K-12 Ribosomal RNA 16S Escherichia coli K-12 0.497404969 1 AAAUUGAAGAGUUUGAUCAUGGCUCAGAUUGAACGCUGGCGGCAGGCCUAACACAUGCAAGUCGAACGGUAACAGGAAGA AGCUUGCUUCUUUGCUGACGAGUGGCGGACGGGUGAGUAAUGUCUGGGAAACUGCCUGAUGGAGGGGGAUAACUACUGGA AACGGUAGCUAAUACCGCAUAACGUCGCAAGACCAAAGAGGGGGACCUUCGGGCCUCUUGCCAUCGGAUGUGCCCAGAUG GGAUUAGCUAGUAGGUGGGGUAACGGCUCACCUAGGCGACGAUCCCUAGCUGGUCUGAGAGGAUGACCAGCCACACUGGA ACUGAGACACGGUCCAGACUCCUACGGGAGGCAGCAGUGGGGAAUAUUGCACAAUGGGCGCAAGCCUGAUGCAGCCAUGC CGCGUGUAUGAAGAAGGCCUUCGGGUUGUAAAGUACUUUCAGCGGGGAGGAAGGGAGUAAAGUUAAUACCUUUGCUCAUU GACGUUACCCGCAGAAGAAGCACCGGCUAACUCCG(PSU)GCCAGCAGCC(G7M)CGGUAAUACGGAGGGUGCAAGCGUU AAUCGGAAUUACUGGGCGUAAAGCGCACGCAGGCGGUUUGUUAAGUCAGAUGUGAAAUCCCCGGGCUCAACCUGGGAACU GCAUCUGAUACUGGCAAGCUUGAGUCUCGUAGAGGGGGGUAGAAUUCCAGGUGUAGCGGUGAAAUGCGUAGAGAUCUGGA GGAAUACCGGUGGCGAAGGCGGCCCCCUGGACGAAGACUGACGCUCAGGUGCGAAAGCGUGGGGAGCAAACAGGAUUAGA UACCCUGGUAGUCCACGCCGUAAACGAUGUCGACUUGGAGGUUGUGCCCUUGAGGCGUGGCUUCCGGAGCUAACGCGUUA AGUCGACCGCCUGGGGAGUACGGCCGCAAGGUUAAAACUCAAAUGAAUUGACGGGGGCCCGCACAAGCGGUGGAGCAUGU GGUUUAAUUCGAU(2MG)(5MC)AACGCGAAGAACCUUACCUGGUCUUGACAUCCACGGAAGUUUUCAGAGAUGAGAAUG UGCCUUCGGGAACCGUGAGACAGGUGCUGCAUGGCUGUCGUCAGCUCGUGUUGUGAAAUGUUGGGUUAAGUCCCGCAACG AGCGCAACCCUUAUCCUUUGUUGCCAGCGGUCCGGCCGGGAACUCAAAGGAGACUGCCAGUGAUAAACUGGAGGAAGGUG GGGAUGACGUCAAGUCAUCAUG(2MG)CCCUUACGACCAGGGCUACACACGUGCUACAAUGGCGCAUACAAAGAGAAGCG ACCUCGCGAGAGCAAGCGGACCUCAUAAAGUGCGUCGUAGUCCGGAUUGGAGUCUGCAACUCGACUCCAUGAAGUCGGAA UCGCUAGUAAUCGUGGAUCAGAAUGCCACGGUGAAUACGUUCCCGGGCCUUGUACACACCG(4OC)CCGU(5MC)ACACC AUGGGAGUGGGUUGCAAAAGAAGUAGGUAGCUUAACCUUCGGGAGGGCGCUUACCACUUUGUGAUUCAUGACUGGGGUGA AGUCG(UR3)AACAAGGUAACCGUAGG(2MG)G(MA6)(MA6)CCUGCGGUUGGAUCA CP018103.1 30S ribosomal protein S2 Escherichia coli (strain K12) K12 0.026652557 1 LEVO MATVSMRDMLKAGVHFGHQTRYWNPKMKPFIFGARNKVHIINLEKTVPMFNEALAELNKIASRKGKILFVGTKRAASEAV KDAALSCDQFFVNHRWLGGMLTNWKTVRQSIKRLKDLETQSQDGTFDKLTKKEALMRTRELEKLENSLGGIKDMGGLPDA LFVIDADHEHIAIKEANNLGIPVFAIVDTNSDPDGVDFVIPGNDDAIRAVTLYLGAVAATVREGRSQDLASQAEESFVEA P0A7V0 30S ribosomal protein S3 Escherichia coli (strain K12) K12 0.026031316 1 LEVO MGQKVHPNGIRLGIVKPWNSTWFANTKEFADNLDSDFKVRQYLTKELAKASVSRIVIERPAKSIRVTIHTARPGIVIGKK GEDVEKLRKVVADIAGVPAQINIAEVRKPELDAKLVADSITSQLERRVMFRRAMKRAVQNAMRLGAKGIKVEVSGRLGGA EIARTEWYREGRVPLHTLRADIDYNTSEAHTTYGVIGVKVWIFKGEILGGMAAVEQPEKPAAQPKKQQRKGRK P0A7V3 30S ribosomal protein S4 Escherichia coli (strain K12) K12 0.023514199 1 LEVO MARYLGPKLKLSRREGTDLFLKSGVRAIDTKCKIEQAPGQHGARKPRLSDYGVQLREKQKVRRIYGVLERQFRNYYKEAA RLKGNTGENLLALLEGRLDNVVYRMGFGATRAEARQLVSHKAIMVNGRVVNIASYQVSPNDVVSIREKAKKQSRVKAALE LAEQREKPTWLEVDAGKMEGTFKRKPERSDLSADINEHLIVELYSK P0A7V8 30S ribosomal protein S5 Escherichia coli (strain K12) K12 0.017629398 1 LEVO MAHIEKQAGELQEKLIAVNRVSKTVKGGRIFSFTALTVVGDGNGRVGFGYGKAREVPAAIQKAMEKARRNMINVALNNGT LQHPVKGVHTGSRVFMQPASEGTGIIAGGAMRAVLEVAGVHNVLAKAYGSTNPINVVRATIDGLENMNSPEMVAAKRGKS VEEILGK P0A7W1 30S ribosomal protein S6 Escherichia coli (strain K12) K12 0.015727512 1 LEVO MRHYEIVFMVHPDQSEQVPGMIERYTAAITGAEGKIHRLEDWGRRQLAYPINKLHKAHYVLMNVEAPQEVIDELETTFRF NDAVIRSMVMRTKHAVTEASPMVKAKDERRERRDDFANETADDAEAGDSEEEEEE P02358 30S ribosomal protein S7 Escherichia coli (strain K12) K12 0.020055155999999998 1 LEVO MPRRRVIGQRKILPDPKFGSELLAKFVNILMVDGKKSTAESIVYSALETLAQRSGKSELEAFEVALENVRPTVEVKSRRV GGSTYQVPVEVRPVRRNALAMRWIVEAARKRGDKSMALRLANELSDAAENKGTAVKKREDVHRMAEANKAFAHYRWLSLR SFSHQAGASSKQPALGYLN P02359 30S ribosomal protein S8 Escherichia coli (strain K12) K12 0.014146557 1 LEVO MSMQDPIADMLTRIRNGQAANKAAVTMPSSKLKVAIANVLKEEGFIEDFKVEGDTKPELELTLKYFQGKAVVESIQRVSR PGLRIYKRKDELPKVMAGLGIAVVSTSKGVMTDRAARQAGLGGEIICYVA P0A7W7 30S ribosomal protein S9 Escherichia coli (strain K12) K12 0.01488627 1 LEVO MAENQYYGTGRRKSSAARVFIKPGNGKIVINQRSLEQYFGRETARMVVRQPLELVDMVEKLDLYITVKGGGISGQAGAIR HGITRALMEYDESLRSELRKAGFVTRDARQVERKKVGLRKARRRPQFSKR P0A7X3 30S ribosomal protein S10 Escherichia coli (strain K12) K12 0.011755597 1 LEVO MQNQRIRIRLKAFDHRLIDQATAEIVETAKRTGAQVRGPIPLPTRKERFTVLISPHVNKDARDQYEIRTHLRLVDIVEPT EKTVDALMRLDLAAGVDVQISLG P0A7R5 30S ribosomal protein S11 Escherichia coli (strain K12) K12 0.013870974999999999 1 LEVO MAKAPIRARKRVRKQVSDGVAHIHASFNNTIVTITDRQGNALGWATAGGSGFRGSRKSTPFAAQVAAERCADAVKEYGIK NLEVMVKGPGPGRESTIRALNAAGFRITNITDVTPIPHNGCRPPKKRRV P0A7R9 30S ribosomal protein S12 Escherichia coli (strain K12) K12 0.013814248999999999 1 LEVO MATVNQLVRKPRARKVAKSNVPALEACPQKRGVCTRVYTTTPKKPNSALRKVCRVRLTNGFEVTSYIGGEGHNLQEHSVI LIRGGRVK(D2T)LPGVRYHTVRGALDCSGVKDRKQARSKYGVKRPKA P0A7S3 30S ribosomal protein S13 Escherichia coli (strain K12) K12 0.013128467 1 LEVO MARIAGINIPDHKHAVIALTSIYGVGKTRSKAILAAAGIAEDVKISELSEGQIDTLRDEVAKFVVEGDLRREISMSIKRL MDLGCYRGLRHRRGLPVRGQRTKTNARTRKGPRKPIKK P0A7S9 30S ribosomal protein S14 Escherichia coli (strain K12) K12 0.011677637 1 LEVO MAKQSMKAREVKRVALADKYFAKRAELKAIISDVNAASDEDRWNAVLKLQTLPRDSSPSRQRNRCRQTGRPHGFLRKFGL SRIKVREAAMRGEIPGLKKASW P0AG59 30S ribosomal protein S15 Escherichia coli (strain K12) K12 0.010290816 1 LEVO MSLSTEATAKIVSEFGRDANDTGSTEVQVALLTAQINHLQGHFAEHKKDHHSRRGLLRMVSQRRKLLDYLKRKDVARYTQ LIERLGLRR P0ADZ4 30S ribosomal protein S16 Escherichia coli K-12 0.009207571999999999 1 LEVO MVTIRLARHGAKKRPFYQVVVADSRNARNGRFIERVGFFNPIASEKEEGTRLDLDRIAHWVGQGATISDRVAALIKEVNK AA P0A7T3 30S ribosomal protein S17 Escherichia coli (strain K12) K12 0.009724491 1 LEVO MTDKIRTLQGRVVSDKMEKSIVVAIERFVKHPIYGKFIKRTTKLHVHDENNECGIGDVVEIRECRPLSKTKSWTLVRVVE KAVL P0AG63 30S ribosomal protein S18 Escherichia coli (strain K12) K12 0.009005471999999999 1 LEVO MARYFRRRKFCRFTAEGVQEIDYKDIATLKNYITESGKIVPSRITGTRAKYQRQLARAIKRARYLSLLPYTDRHQ P0A7T7 30S ribosomal protein S19 Escherichia coli (strain K12) K12 0.010455355 1 LEVO MPRSLKKGPFIDLHLLKKVEKAVESGDKKPLRTWSRRSTIFPNMIGLTIAVHNGRQHVPVFVTDEMVGHKLGEFAPTRTY RGHAADKKAKKK P0A7U3 30S ribosomal protein S20 Escherichia coli (strain K12) K12 0.009708464 1 LEVO MANIKSAKKRAIQSEKARKHNASRRSMMRTFIKKVYAAIEAGDKAAAQKAFNEMQPIVDRQAAKGLIHKNKAARHKANLT AQINKLA P0A7U7 30S ribosomal protein S21 Escherichia coli (strain K12) K12 0.008524039 1 LEVO MPVIKVRENEPFDVALRRFKRSCEKAGVLAEVRRREFYEKPTTERKRAKASAVKRHAKKLARENARRTRLY P68679 Ribosomal RNA 23S Escherichia coli K-12 0.93960725 1 GGUUAAGCGACUAAGCGUACACGGUGGAUGCCCUGGCAGUCAGAGGCGAUGAAGGACGUGCUAAUCUGCGAUAAGCGUCG GUAAGGUGAUAUGAACCGUUAUAACCGGCGAUUUCCGAAUGGGGAAACCCAGUGUGUUUCGACACACUAUCAUUAACUGA AUCCAUAGGUUAAUGAGGCGAACCGGGGGAACUGAAACAUCUAAGUACCCCGAGGAAAAGAAAUCAACCGAGAUUCCCCC AGUAGCGGCGAGCGAACGGGGAGCAGCCCAGAGCCUGAAUCAGUGUGUGUGUUAGUGGAAGCGUCUGGAAAGGCGCGCGA UACAGGGUGACAGCCCCGUACACAAAAAUGCACAUGCUGUGAGCUCGAUGAGUAGGGCGGGACACGUGGUAUCCUGUCUG AAUAUGGGGGGACCAUCCUCCAAGGCUAAAUACUCCUGACUGACCGAUAGUGAACCAGUACCGUGAGGGAAAGGCGAAAA GAACCCCGGCGAGGGGAGUGAAAAAGAACCUGAAACCGUGUACGUACAAGCAGUGGGAGCACGCUUAGGCGUGUGACUGC GUACCUUUUGUAUAAUGGGUCAGCGACUUAUAUUCUGUAGCAAGGUUAACCGAAUAGGGGAGCCGAAGGGAAACCGAGUC UUAACUGGGCGUUAAGUUGCAGGGUAUAGACCCGAAACCCGGUGAUCUAGCCAUGGGCAGGUUGAAGGUUGGGUAACACU AACUGGAGGACCGAACCGACUAAU(1MG)(PSU)(5MU)GAAAAAUUAGCGGAUGACUUGUGGCUGGGGGUGAAAGGCCA AUCAAACCGGGAGAUAGCUGGUUCUCCCCGAAAGCUAUUUAGGUAGCGCCUCGUGAAUUCAUCUCCGGGGGUAGAGCACU GUUUCGGCAAGGGGGUCACUUACCAACCCGAUGCAAACUGCGAAUACCGGAGAAUGUUAUCACGGGAGACACACGGCGGG (PSU)GCUAACGUCCGUCGUGAAGAGGGAAACAACCCAGACCGCCAGCUAAGGUCCCAAAGUCAUGGUUAAGUGGGAAAC GAUGUGGGAAGGCCCAGACAGCCAGGAUGUUGGCUUAGAAGCAGCCAUCAUUUAAAGAAAGCGUAAUAGCUCACUGGUCG AGUCGGCCUGCGCGGAAGAUGUAACGGGGCUAAACCAUGCACCGAAGCUGCGGCAGCGACGCUUAUGCGUUGUUGGGUAG GGGAGCGUUCUGUAAGCCUGCGAAGGUGUGCUGUGAGGCAUGCUGGAGGUAUCAGAAGUGCGAAUGCUGACAUAAGUAAC GAUAAAGCGGGUGAAAAGCCCGCUCGCCGGAAGACCAAGGGUUCCUGUCCAACGUUAAUCGGGGCAGGGUGAGUCGACCC CUAAGGCGAGGCCGAAAGGCGUAGUCGAUGGGAAACAGGUUAAUAUUCCUGUACUUGGUGUUACUGCGAAGGGGGGACGG AGAAGGCUAUGUUGGCCGGGCGACGGUUGUCCCGGUUUAAGCGUGUAGGCUGGUUUUCCAGGCAAAUCCGGAAAAUCAAG GCUGAGGCGUGAUGACGAGGCACUACGGUGCUGAAGCAACAAAUGCCCUGCUUCCAGGAAAAGCCUCUAAGCAUCAGGUA ACAUCAAAUCGUACCCCAAACCGACAC(6MZ)GGUGGUCAGGUAGAGAAUACCAAGGCGCUUGAGAGAACUCGGGUGAAG GAACUAGGCAAAAUGGUGCCGUAACUUCGGGAGAAGGCACGCUGAUAUGUAGGUGAGGUCCCUCGCGGAUGGAGCUGAAA UCAGUCGAAGAUACCAGCUGGCUGCAACUGUUUAUUAAAAACACAGCACUGUGCAAACACGAAAGUGGACGUAUACGGUG UGACGCCU(2MG)CCCGGUGCCGGAAGGUUAAUUGAUGGGGUUAGCGCAAGCGAAGCUCUUGAUCGAAGCCCCGGUAAAC GGCGGCCG(PSU)AAC(3TD)A(PSU)AACGGUCCUAAGGUAGCGAAA(5MU)UCCUUGUCGGGUAAGUUCCGAC(5MC) UGCACGAAUGGCGUAAUGAUGGCCAGGCUGUCUCCACCCGAGACUCAGUGAAAUUGAACUCGCUGUG(6MZ)AGAUGCAG UGUACCCGCGGCAAGACGGAAAGACCCCGU(G7M)AACCUUUACUAUAGCUUGACACUGAACAUUGAGCCUUGAUGUGUA GGAUAGGUGGGAGGCUUUGAAGUGUGGACGCCAGUCUGCAUGGAGCCGACCUUGAAAUACCACCCUUUAAUGUUUGAUGU UCUAACGUUGACCCGUAAUCCGGGUUGCGGACAGUGUCUGGUGGGUAGUUUGACUG(OMG)GGCGGUCUCCUCCUAAAGA GUAACGGAGGAGCACGAAGGUUGGCUAAUCCUGGUCGGACAUCAGGAGGUUAGUGCAAUGGCAUAAGCCAGCUUGACUGC GAGCGUGACGGCGCGAGCAGGUGCGAAAGCAGGUCAUAGUGAUCCGGUGGUUCUGAAUGGAAGGGCCAUCGCUCAACGGA UAAAAGGUACUCCG(2MG)GGAUAACAGGC(PSU)GAUACCGCCCAAGAGUUCAUAUCGACGGCGGUGUUUGGCA(OMC) CUCG(2MA)(PSU)GUCGGCUCAUCACAUCCUGGGGCUGAAGUAGGUCCCAAGGGUAUGGC(OMU)GUUCGCCAUUUAAA GUGGUACGCGAGC(PSU)GGGUUUAGAACGUCGUGAGACAG(PSU)(PSU)CGGUCCCUAUCUGCCGUGGGCGCUGGAGA ACUGAGGGGGGCUGCUCCUAGUACGAGAGGACCGGAGUGGACGCAUCACUGGUGUUCGGGUUGUCAUGCCAAUGGCACUG CCCGGUAGCUAAAUGCGGAAGAGAUAAGUGCUGAAAGCAUCUAAGCACGAAACUUGCCCCGAGAUGAGUUCUCCCUGACC CUUUAAGGGUCCUGAAGGAACGUUGAAGACGACGACGUUGAUAGGCCGGGUGUGUAAGCGCAGCGAUGCGUUGAGCUAAC CGGUACUAAUGAACCGUGAGGCUUAACCU Ribosomal RNA 5S Escherichia coli K-12 0.03879008999999999 1 UGCCUGGCGGCCGUAGCGCGGUGGUCCCACCUGACCCCAUGCCGAACUCAGAAGUGAAACGCCGUAGCGCCGAUGGUAGU GUGGGGUCUCCCCAUGCGAGAGUAGGGAACUGCCAGGCAU CP053605.1 50S ribosomal protein L2 Escherichia coli (strain K12) K12 0.029923619 1 LEVO MAVVKCKPTSPGRRHVVKVVNPELHKGKPFAPLLEKNSKSGGRNNNGRITTRHIGGGHKQAYRIVDFKRNKDGIPAVVER LEYDPNRSANIALVLYKDGERRYILAPKGLKAGDQIQSGVDAAIKPGNTLPMRNIPVGSTVHNVEMKPGKGGQLARSAGT YVQIVARDGAYVTLRLRSGEMRKVEADCRATLGEVGNAEHMLRVLGKAGAARWRGVRPTVRGTAMNPVDHPHGGGEGRNF GKHPVTPWGVQTKGKKTRSNKRTDKFIVRRRSK P60422 50S ribosomal protein L3 Escherichia coli (strain K12) K12 0.022291562 1 LEVO MIGLVGKKVGMTRIFTEDGVSIPVTVIEVEANRVTQVKDLANDGYRAIQVTTGAKKANRVTKPEAGHFAKAGVEAGRGLW EFRLAEGEEFTVGQSISVELFADVKKVDVTGTSKGKGFAGTVKRWNFRTQDATHGNSLSHRVPGSIGQN(MEQ)TPGKVF KGKKMAGQMGNERVTVQSLDVVRVDAERNLLLVKGAVPGATGSDLIVKPAVKA P60438 50S ribosomal protein L4 Escherichia coli K-12 0.022121566 1 LEVO MELVLKDAQSALTVSETTFGRDFNEALVHQVVVAYAAGARQGTRAQKTRAEVTGSGKKPWRQKGTGRARSGSIKSPIWRS GGVTFAARPQDHSQKVNKKMYRGALKSILSELVRQDRLIVVEKFSVEAPKTKLLAQKLKDMALEDVLIITGELDENLFLA ARNLHKVDVRDATGIDPVSLIAFDKVVMTADAVKQVEEMLA P60723 50S ribosomal protein L5 Escherichia coli (strain K12) K12 0.020333611 1 LEVO MAKLHDYYKDEVVKKLMTEFNYNSVMQVPRVEKITLNMGVGEAIADKKLLDNAAADLAAISGQKPLITKARKSVAGFKIR QGYPIGCKVTLRGERMWEFFERLITIAVPRIRDFRGLSAKSFDGRGNYSMGVREQIIFPEIDYDKVDRVRGLDITITTTA KSDEEGRALLAAFDFPFRK P62399 50S ribosomal protein L6 Escherichia coli (strain K12) K12 0.018932791 1 LEVO MSRVAKAPVVVPAGVDVKINGQVITIKGKNGELTRTLNDAVEVKHADNTLTFGPRDGYADGWAQAGTARALLNSMVIGVT EGFTKKLQLVGVGYRAAVKGNVINLSLGFSHPVDHQLPAGITAECPTQTEIVLKGADKQVIGQVAADLRAYRRPEPYKGK GVRYADEVVRTKEAKKK P0AG55 50S ribosomal protein L9 Escherichia coli K-12 0.01578902 1 LEVO MQVILLDKVANLGSLGDQVNVKAGYARNFLVPQGKAVPATKKNIEFFEARRAELEAKLAEVLAAANARAEKINALETVTI ASKAGDEGKLFGSIGTRDIADAVTAAGVEVAKSEVRLPNGVLRTTGEHEVSFQVHSEVFAKVIVNVVAE P0A7R1 50S ribosomal protein L31 Escherichia coli (strain K12) K12 0.007887116999999999 1 LEVO MKKDIHPKYEEITASCSCGNVMKIRSTVGHDLNLDVCSKCHPFFTGKQRDVATGGRVDRFNKRFNIPGSK P0A7M9 50S ribosomal protein L13 Escherichia coli K-12 0.016050606 1 LEVO MKTFTAKPETVKRDWYVVDATGKTLGRLATELARRLRGKHKAEYTPHVDTGDYIIVLNADKVAVTGNKRTDKVYYHHTGH IGGIKQATFEEMIARRPERVIEIAVKGMLPKGPLGRAMFRKLKVYAGNEHNHAAQQPQVLDI P0AA10 50S ribosomal protein L14 Escherichia coli K-12 0.013565066999999998 1 LEVO MIQEQTMLNVADNSGARRVMCIKVLGGSHRRYAGVGDIIKITIKEAIPRGKVKKGDVLKAVVVRTKKGVRRPDGSVIRFD GNACVLLNNNSEQPIGTRIFGPVTRELRSEKFMKIISLAPEVL P0ADY3 50S ribosomal protein L15 Escherichia coli K-12 0.015008470999999999 1 LEVO MRLNTLSPAEGSKKAGKRLGRGIGSGLGKTGGRGHKGQKSRSGGGVRRGFEGGQMPLYRRLPKFGFTSRKAAITAEIRLS DLAKVEGGVVDLNTLKAANIIGIQIEFAKVILAGEVTTPVTVRGLRVTKGARAAIEAAGGKIEE P02413 50S ribosomal protein L16 Escherichia coli K-12 0.015327261 1 LEVO MLQPKRTKFRKMHKGRNRGLAQGTDVSFGSFGLKAVGRGRLTARQIEAARRAMTRAVKRQGKIWIRVFPDKPITEKPLAV (4D4)MGKGKGNVEYWVALIQPGKVLYEMDGVPEELAREAFKLAAAKLPIKTTFVTKTVM P0ADY7 50S ribosomal protein L17 Escherichia coli (strain K12) K12 0.014393656999999999 1 LEVO MRHRKSGRQLNRNSSHRQAMFRNMAGSLVRHEIIKTTLPKAKELRRVVEPLITLAKTDSVANRRLAFARTRDNEIVAKLF NELGPRFASRAGGYTRILKCGFRAGDNAPMAYIELVDRSEKAEAAAE P0AG44 50S ribosomal protein L18 Escherichia coli (strain K12) K12 0.012794667999999999 1 LEVO MDKKSARIRRATRARRKLQELGATRLVVHRTPRHIYAQVIAPNGSEVLVAASTVEKAIAEQLKYTGNKDAAAAVGKAVAE RALEKGIKDVSFDRSGFQYHGRVQALADAAREAGLQF P0C018 50S ribosomal protein L19 Escherichia coli (strain K12) K12 0.013159278 1 LEVO MSNIIKQLEQEQMKQDVPSFRPGDTVEVKVWVVEGSKKRLQAFEGVVIAIRNRGLHSAFTVRKISNGEGVERVFQTHSPV VDSISVKRRGAVRKAKLYYLRERTGKAARIKERLN P0A7K6 50S ribosomal protein L20 Escherichia coli (strain K12) K12 0.013528024 1 LEVO MARVKRGVIARARHKKILKQAKGYYGARSRVYRVAFQAVIKAGQYAYRDRRQRKRQFRQLWIARINAAARQNGISYSKFI NGLKKASVEIDRKILADIAVFDKVAFTALVEKAKAALA P0A7L3 50S ribosomal protein L21 Escherichia coli K-12 0.011586374 1 LEVO MYAVFQSGGKQHRVSEGQTVRLEKLDIATGETVEFAEVLMIANGEEVKIGVPFVDGGVIKAEVVAHGRGEKVKIVKFRRR KHYRKQQGHRQWFTDVKITGISA P0AG48 50S ribosomal protein L22 Escherichia coli K-12 0.012253359 1 LEVO METIAKHRHARSSAQKVRLVADLIRGKKVSQALDILTYTNKKAAVLVKKVLESAIANAEHNDGADIDDLKVTKIFVDEGP SMKRIMPRAKGRADRILKRTSHITVVVSDR P61175 50S ribosomal protein L23 Escherichia coli (strain K12) K12 0.01122216 1 LEVO MIREERLLKVLRAPHVSEKASTAMEKSNTIVLKVAKDATKAEIKAAVQKLFEVEVEVVNTLVVKGKVKRHGQRIGRRSDW KKAYVTLKEGQNLDFVGGAE P0ADZ0 50S ribosomal protein L24 Escherichia coli (strain K12) K12 0.011339249999999999 1 LEVO MAAKIRRDDEVIVLTGKDKGKRGKVKNVLSSGKVIVEGINLVKKHQKPVPALNQPGGIVEKEAAIQVSNVAIFNAATGKA DRVGFRFEDGKKVRFFKSNSETIK P60624 50S ribosomal protein L25 Escherichia coli K-12 0.010713465 1 LEVO MFTINAEVRKEQGKGASRRLRAANKFPAIIYGGKEAPLAIELDHDKVMNMQAKAEFYSEVLTIVVDGKEIKVKAQDVQRH PYKPKLQHIDFVRA P68919 50S ribosomal protein L27 Escherichia coli (strain K12) K12 0.00914654 1 LEVO MAHKKAGGSTRNGRDSEAKRLGVKRFGGESVLAGSIIVRQRGTKFHAGANVGCGRDHTLFAKADGKVKFEVKGPKNRKFI SIEAE P0A7L8 50S ribosomal protein L28 Escherichia coli (strain K12) K12 0.009027550999999998 1 LEVO MSRVCQVTGKRPVTGNNRSHALNATKRRFLPNLHSHRFWVESEKRFVTLRVSAKGMRVIDKKGIDTVLAELRARGEKY P0A7M2 50S ribosomal protein L29 Escherichia coli (strain K12) K12 0.0072864639999999994 1 LEVO MKAKELREKSVEELNTELLNLLREQFNLRMQAASGQLQQSHLLKQVRRDVARVKTLLNEKAGA P0A7M6 50S ribosomal protein L30 Escherichia coli (strain K12) K12 0.006554819999999999 1 LEVO MAKTIKITQTRSAIGRLPKHKATLLGLGLRRIGHTVEREDTPAIRGMINAVSFMVKVEE P0AG51 50S ribosomal protein L32 Escherichia coli (strain K12) K12 0.006463444999999999 1 LEVO MAVQQNKPTRSKRGMRRSHDALTAVTSLSVDKTSGEKHLRHHITADGYYRGRKVIAK P0A7N4 50S ribosomal protein L33 Escherichia coli (strain K12) K12 0.006388631 1 LEVO MAKGIREKIKLVSSAGTGHFYTTTKNKRTKPEKLELKKFDPVVRQHVIYKEAKIK P0A7N9 50S ribosomal protein L34 Escherichia coli K-12 0.005397463 1 LEVO MKRTFQPSVLKRNRSHGFRARMATKNGRQVLARRRAKGRARLTVSK P0A7P5 50S ribosomal protein L35 Escherichia coli (strain K12) K12 0.007313032 1 LEVO MPKIKTVRGAAKRFKKTGKGGFKHKHANLRHILTKKATKRKRHLRPKAMVSKGDLGLVIACLPYA P0A7Q1 50S ribosomal protein L36 Escherichia coli K-12 0.00437739 1 LEVO MKVRASVKKLCRNCKIVKRDGVIRVICSAEPKHKQRQG P0A7Q6 TnaC - Tryptophanase leader peptide - R23F Escherichia coli K-12 0.0020633339999999996 1 LEVO VTSKWFNIDNKIVDHFP mRNA Escherichia coli K-12 0.002846759 1 CGCCCGUGA P-site tRNA-Pro Escherichia coli (strain K12) 0.024875807 1 CGGUGAUUGGCGCAGCCUGGUAGCGCACUUCGUUCGG(1MG)ACGAAGGG(G7M)UCGGAGGU(PSU)CGAAUCCUCUAU CACCGACCA CP053720.1 MAGNESIUM ION 2.4305e-05 326 MG POTASSIUM ION 3.9098e-05 147 K ZINC ION 6.5409e-05 3 ZN TRYPTOPHAN 0.000204225 1 TRP water 1.8015e-05 2026 HOH singleParticle particle 0.5 7.5 50.0 HEPES-KOH HEPES-potasium buffer 100.0 KOAc potassium acetate 25.0 MgAc magnesium acetate 2.0 L-Trp L-tryptophan

All buffers used during the preparation contained 2 mM L-tryptophan.

Quantifoil R2/2 COPPER 300 CARBON CONTINUOUS 200.0 GLOW DISCHARGE 20 AIR 0.025 ETHANE 100 277 FEI VITROBOT MARK IV

Sample was purified using sucrose gradient ultracentrifugation, diluted to 200 nM and applied to grids.

FEI TITAN KRIOS FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 300 2.7 -0.4 -1.6 165000.0 59880.0 FEI TITAN KRIOS AUTOGRID HOLDER NITROGEN GATAN K2 SUMMIT (4k x 4k) 1-40 1 8270 44.0 1 358000 RELION 3.1 PHASE FLIPPING AND AMPLITUDE CORRECTION 6TBV 1 C1 2.4 FSC 0.143 CUT-OFF RELION 3.1 191230 MAXIMUM LIKELIHOOD RELION 3.1 MAXIMUM LIKELIHOOD RELION 3.1 RELION 3.1 emd_12694.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 325 325 325 0 0 0 325 325 325 271.375 271.375 271.375 90.0 90.0 90.0 X Y Z -0.027826075 0.11094911 0.0011507177 0.006641011 0.835 0.835 0.835 0.0075 AUTHOR ::::EMDATABANK.org::::EMD-12694:::: E.coli 70S ribosome stalled on TnaC-(R23F) with Pro24 in the P-site. 6TBV PDB experimental model FLEXIBLE FIT emd_12694_msk_1.map emd_12694_half_map_1.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 325 325 325 0 0 0 325 325 325 271.375 271.375 271.375 90.0 90.0 90.0 X Y Z -0.0935484 0.16740285 0.0011548379 0.016776012 0.835 0.835 0.835 AUTHOR ::::EMDATABANK.org::::EMD-12694:::: Halfmap_1 of E.coli 70S ribosome stalled on TnaC-(R23F) with Pro24 in the P-site. emd_12694_half_map_2.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 325 325 325 0 0 0 325 325 325 271.375 271.375 271.375 90.0 90.0 90.0 X Y Z -0.0935484 0.16740285 0.0011548379 0.016776012 0.835 0.835 0.835 AUTHOR ::::EMDATABANK.org::::EMD-12694:::: Halfmap_2 of E.coli 70S ribosome stalled on TnaC-(R23F) with Pro24 in the P-site.