2026-06-24 REL PDBe INITIAL_RELEASE REPOSITORY 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 _em_admin.last_update DATA_COLLECTION atom_site chem_comp_atom chem_comp_bond em_admin _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 PDBe PDBe 2021-03-17 2021-12-15 2021-12-15 2026-06-24 Wellcome Trust 202797/Z/16/Z United Kingdom Wellcome Trust 098406/Z/12/B United Kingdom European Communitys Seventh Framework Programme BIOSTRUCT-X (Contract No. 283570) European Union Initiated 70S ribosome in complex with 2A protein from encephalomyocarditis virus (EMCV) Hill CH Napthine S 70S ribosome, initiation complex, EMCV, cardiovirus, 2A, picornavirus, frameshifting, PRF, RNA-binding protein, protein-mediated frameshifting, ribosome-binding protein, beta-shell, viral protein, RIBOSOME Hill CH Pekarek L Napthine S Kibe A Firth AE Graham SC Caliskan N Brierley I Structural and molecular basis for Cardiovirus 2A protein as a viral gene expression switch Nat Commun UK 12 7166 2021 doi:10.1038/s41467-021-27400-7 2041-1723 7nwt FULLOVERLAP PDB 7BNY unspecified
X-ray crystal structure of EMCV 2A protein
 EMDB EMD-12635 associated EM volume
Initiated 70S ribosome in complex with 2A protein from encephalomyocarditis virus (EMCV)
 Initiated 70S ribosome in complex with 2A protein from encephalomyocarditis virus (EMCV) Initiated 70S ribosome in complex with 2A protein from encephalomyocarditis virus (EMCV) 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 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 56 57
70S ribosome subunits and initiator fMet-tRNA purified from E.coli. mRNA template was generated by in vitro transcription EMCV 2A protein was recombinantly expressed in E.coli
 50S ribosomal protein L2 Escherichia coli 0.029923619 1 LEVO MAVVKCKPTSPGRRHVVKVVNPELHKGKPFAPLLEKNSKSGGRNNNGRITTRHIGGGHKQAYRIVDFKRNKDGIPAVVER LEYDPNRSANIALVLYKDGERRYILAPKGLKAGDQIQSGVDAAIKPGNTLPMRNIPVGSTVHNVEMKPGKGGQLARSAGT YVQIVARDGAYVTLRLRSGEMRKVEADCRATLGEVGNAEHMLRVLGKAGAARWRGVRPTVRGTAMNPVDHPHGGGEGRNF GKHPVTPWGVQTKGKKTRSNKRTDKFIVRRRSK P60422 50S ribosomal protein L3 Escherichia coli 0.022277534999999998 1 LEVO MIGLVGKKVGMTRIFTEDGVSIPVTVIEVEANRVTQVKDLANDGYRAIQVTTGAKKANRVTKPEAGHFAKAGVEAGRGLW EFRLAEGEEFTVGQSISVELFADVKKVDVTGTSKGKGFAGTVKRWNFRTQDATHGNSLSHRVPGSIGQNQTPGKVFKGKK MAGQMGNERVTVQSLDVVRVDAERNLLLVKGAVPGATGSDLIVKPAVKA P60438 50S ribosomal protein L4 Escherichia coli 0.022121566 1 LEVO MELVLKDAQSALTVSETTFGRDFNEALVHQVVVAYAAGARQGTRAQKTRAEVTGSGKKPWRQKGTGRARSGSIKSPIWRS GGVTFAARPQDHSQKVNKKMYRGALKSILSELVRQDRLIVVEKFSVEAPKTKLLAQKLKDMALEDVLIITGELDENLFLA ARNLHKVDVRDATGIDPVSLIAFDKVVMTADAVKQVEEMLA P60723 50S ribosomal protein L5 Escherichia coli 0.020333611 1 LEVO MAKLHDYYKDEVVKKLMTEFNYNSVMQVPRVEKITLNMGVGEAIADKKLLDNAAADLAAISGQKPLITKARKSVAGFKIR QGYPIGCKVTLRGERMWEFFERLITIAVPRIRDFRGLSAKSFDGRGNYSMGVREQIIFPEIDYDKVDRVRGLDITITTTA KSDEEGRALLAAFDFPFRK P62399 50S ribosomal protein L6 Escherichia coli 0.018932791 1 LEVO MSRVAKAPVVVPAGVDVKINGQVITIKGKNGELTRTLNDAVEVKHADNTLTFGPRDGYADGWAQAGTARALLNSMVIGVT EGFTKKLQLVGVGYRAAVKGNVINLSLGFSHPVDHQLPAGITAECPTQTEIVLKGADKQVIGQVAADLRAYRRPEPYKGK GVRYADEVVRTKEAKKK P0AG55 50S ribosomal protein L9 Escherichia coli 0.01578902 1 LEVO MQVILLDKVANLGSLGDQVNVKAGYARNFLVPQGKAVPATKKNIEFFEARRAELEAKLAEVLAAANARAEKINALETVTI ASKAGDEGKLFGSIGTRDIADAVTAAGVEVAKSEVRLPNGVLRTTGEHEVSFQVHSEVFAKVIVNVVAE P0A7R1 50S ribosomal protein L10 Escherichia coli 0.017736596 1 LEVO MALNLQDKQAIVAEVSEVAKGALSAVVADSRGVTVDKMTELRKAGREAGVYMRVVRNTLLRRAVEGTPFECLKDAFVGPT LIAYSMEHPGAAARLFKEFAKANAKFEVKAAAFEGELIPASQIDRLATLPTYEEAIARLMATMKEASAGKLVRTLAAVRD AKEAA A0A073UC57 50S ribosomal protein L11 Escherichia coli 0.014894361999999998 1 LEVO MAKKVQAYVKLQVAAGMANPSPPVGPALGQQGVNIMEFCKAFNAKTDSIEKGLPIPVVITVYADRSFTFVTKTPPAAVLL KKAAGIKSGSGKPNKDKVGKISRAQLQEIAQTKAADMTGADIEAMTRSIEGTARSMGLVVED P0A7J7 50S ribosomal protein L13 Escherichia coli 0.016050606 1 LEVO MKTFTAKPETVKRDWYVVDATGKTLGRLATELARRLRGKHKAEYTPHVDTGDYIIVLNADKVAVTGNKRTDKVYYHHTGH IGGIKQATFEEMIARRPERVIEIAVKGMLPKGPLGRAMFRKLKVYAGNEHNHAAQQPQVLDI P0AA10 50S ribosomal protein L14 Escherichia coli 0.013565066999999998 1 LEVO MIQEQTMLNVADNSGARRVMCIKVLGGSHRRYAGVGDIIKITIKEAIPRGKVKKGDVLKAVVVRTKKGVRRPDGSVIRFD GNACVLLNNNSEQPIGTRIFGPVTRELRSEKFMKIISLAPEVL P0ADY3 50S ribosomal protein L15 Escherichia coli 0.015008470999999999 1 LEVO MRLNTLSPAEGSKKAGKRLGRGIGSGLGKTGGRGHKGQKSRSGGGVRRGFEGGQMPLYRRLPKFGFTSRKAAITAEIRLS DLAKVEGGVVDLNTLKAANIIGIQIEFAKVILAGEVTTPVTVRGLRVTKGARAAIEAAGGKIEE P02413 50S ribosomal protein L16 Escherichia coli 0.015312269 1 LEVO MLQPKRTKFRKMHKGRNRGLAQGTDVSFGSFGLKAVGRGRLTARQIEAARRAMTRAVKRQGKIWIRVFPDKPITEKPLAV RMGKGKGNVEYWVALIQPGKVLYEMDGVPEELAREAFKLAAAKLPIKTTFVTKTVM P0ADY7 50S ribosomal protein L17 Escherichia coli 0.014393656999999999 1 LEVO MRHRKSGRQLNRNSSHRQAMFRNMAGSLVRHEIIKTTLPKAKELRRVVEPLITLAKTDSVANRRLAFARTRDNEIVAKLF NELGPRFASRAGGYTRILKCGFRAGDNAPMAYIELVDRSEKAEAAAE P0AG44 50S ribosomal protein L18 Escherichia coli 0.012794667999999999 1 LEVO MDKKSARIRRATRARRKLQELGATRLVVHRTPRHIYAQVIAPNGSEVLVAASTVEKAIAEQLKYTGNKDAAAAVGKAVAE RALEKGIKDVSFDRSGFQYHGRVQALADAAREAGLQF P0C018 50S ribosomal protein L19 Escherichia coli 0.013159278 1 LEVO MSNIIKQLEQEQMKQDVPSFRPGDTVEVKVWVVEGSKKRLQAFEGVVIAIRNRGLHSAFTVRKISNGEGVERVFQTHSPV VDSISVKRRGAVRKAKLYYLRERTGKAARIKERLN P0A7K6 50S ribosomal protein L20 Escherichia coli 0.013528024 1 LEVO MARVKRGVIARARHKKILKQAKGYYGARSRVYRVAFQAVIKAGQYAYRDRRQRKRQFRQLWIARINAAARQNGISYSKFI NGLKKASVEIDRKILADIAVFDKVAFTALVEKAKAALA P0A7L3 50S ribosomal protein L21 Escherichia coli 0.011586374 1 LEVO MYAVFQSGGKQHRVSEGQTVRLEKLDIATGETVEFAEVLMIANGEEVKIGVPFVDGGVIKAEVVAHGRGEKVKIVKFRRR KHYRKQQGHRQWFTDVKITGISA P0AG48 50S ribosomal protein L22 Escherichia coli 0.012253359 1 LEVO METIAKHRHARSSAQKVRLVADLIRGKKVSQALDILTYTNKKAAVLVKKVLESAIANAEHNDGADIDDLKVTKIFVDEGP SMKRIMPRAKGRADRILKRTSHITVVVSDR P61175 50S ribosomal protein L23 Escherichia coli 0.01122216 1 LEVO MIREERLLKVLRAPHVSEKASTAMEKSNTIVLKVAKDATKAEIKAAVQKLFEVEVEVVNTLVVKGKVKRHGQRIGRRSDW KKAYVTLKEGQNLDFVGGAE P0ADZ0 50S ribosomal protein L24 Escherichia coli 0.011339249999999999 1 LEVO MAAKIRRDDEVIVLTGKDKGKRGKVKNVLSSGKVIVEGINLVKKHQKPVPALNQPGGIVEKEAAIQVSNVAIFNAATGKA DRVGFRFEDGKKVRFFKSNSETIK P60624 50S ribosomal protein L25 Escherichia coli 0.010713465 1 LEVO MFTINAEVRKEQGKGASRRLRAANKFPAIIYGGKEAPLAIELDHDKVMNMQAKAEFYSEVLTIVVDGKEIKVKAQDVQRH PYKPKLQHIDFVRA P68919 50S ribosomal protein L27 Escherichia coli 0.00914654 1 LEVO MAHKKAGGSTRNGRDSEAKRLGVKRFGGESVLAGSIIVRQRGTKFHAGANVGCGRDHTLFAKADGKVKFEVKGPKNRKFI SIEAE P0A7L8 50S ribosomal protein L28 Escherichia coli 0.009027550999999998 1 LEVO MSRVCQVTGKRPVTGNNRSHALNATKRRFLPNLHSHRFWVESEKRFVTLRVSAKGMRVIDKKGIDTVLAELRARGEKY P0A7M2 50S ribosomal protein L29 Escherichia coli 0.0072864639999999994 1 LEVO MKAKELREKSVEELNTELLNLLREQFNLRMQAASGQLQQSHLLKQVRRDVARVKTLLNEKAGA P0A7M6 50S ribosomal protein L30 Escherichia coli 0.006554819999999999 1 LEVO MAKTIKITQTRSAIGRLPKHKATLLGLGLRRIGHTVEREDTPAIRGMINAVSFMVKVEE P0AG51 23S ribosomal RNA Escherichia coli 0.941832625 1 GGUUAAGCGACUAAGCGUACACGGUGGAUGCCCUGGCAGUCAGAGGCGAUGAAGGACGUGCUAAUCUGCGAUAAGCGUCG GUAAGGUGAUAUGAACCGUUAUAACCGGCGAUUUCCGAAUGGGGAAACCCAGUGUGUUUCGACACACUAUCAUUAACUGA AUCCAUAGGUUAAUGAGGCGAACCGGGGGAACUGAAACAUCUAAGUACCCCGAGGAAAAGAAAUCAACCGAGAUUCCCCC AGUAGCGGCGAGCGAACGGGGAGCAGCCCAGAGCCUGAAUCAGUGUGUGUGUUAGUGGAAGCGUCUGGAAAGGCGCGCGA UACAGGGUGACAGCCCCGUACACAAAAAUGCACAUGCUGUGAGCUCGAUGAGUAGGGCGGGACACGUGGUAUCCUGUCUG AAUAUGGGGGGACCAUCCUCCAAGGCUAAAUACUCCUGACUGACCGAUAGUGAACCAGUACCGUGAGGGAAAGGCGAAAA GAACCCCGGCGAGGGGAGUGAAAAAGAACCUGAAACCGUGUACGUACAAGCAGUGGGAGCACGCUUAGGCGUGUGACUGC GUACCUUUUGUAUAAUGGGUCAGCGACUUAUAUUCUGUAGCAAGGUUAACCGAAUAGGGGAGCCGAAGGGAAACCGAGUC UUAACUGGGCGUUAAGUUGCAGGGUAUAGACCCGAAACCCGGUGAUCUAGCCAUGGGCAGGUUGAAGGUUGGGUAACACU AACUGGAGGACCGAACCGACUAAU(1MG)(PSU)(5MU)GAAAAAUUAGCGGAUGACUUGUGGCUGGGGGUGAAAGGCCA AUCAAACCGGGAGAUAGCUGGUUCUCCCCGAAAGCUAUUUAGGUAGCGCCUCGUGAAUUCAUCUCCGGGGGUAGAGCACU GUUUCGGCAAGGGGGUCAACCCGACUUACCAACCCGAUGCAAACUGCGAAUACCGGAGAAUGUUAUCACGGGAGACACAC GGCGGG(PSU)GCUAACGUCCGUCGUGAAGAGGGAAACAACCCAGACCGCCAGCUAAGGUCCCAAAGUCAUGGUUAAGUG GGAAACGAUGUGGGAAGGCCCAGACAGCCAGGAUGUUGGCUUAGAAGCAGCCAUCAUUUAAAGAAAGCGUAAUAGCUCAC UGGUCGAGUCGGCCUGCGCGGAAGAUGUAACGGGGCUAAACCAUGCACCGAAGCUGCGGCAGCGACGCUUAUGCGUUGUU GGGUAGGGGAGCGUUCUGUAAGCCUGCGAAGGUGUGCUGUGAGGCAUGCUGGAGGUAUCAGAAGUGCGAAUGCUGACAUA AGUAACGAUAAAGCGGGUGAAAAGCCCGCUCGCCGGAAGACCAAGGGUUCCUGUCCAACGUUAAUCGGGGCAGGGUGAGU CGACCCCUAAGGCGAGGCCGAAAGGCGUAGUCGAUGGGAAACAGGUUAAUAUUCCUGUACUUGGUGUUACUGCGAAGGGG GGACGGAGAAGGCUAUGUUGGCCGGGCGACGGUUGUCCCGGUUUAAGCGUGUAGGCUGGUUUUCCAGGCAAAUCCGGAAA AUCAAGGCUGAGGCGUGAUGACGAGGCACUACGGUGCUGAAGCAACAAAUGCCCUGCUUCCAGGAAAAGCCUCUAAGCAU CAGGUAACAUCAAAUCGUACCCCAAACCGACAC(6MZ)GGUGGUCAGGUAGAGAAUACCAAGGCGCUUGAGAGAACUCGG GUGAAGGAACUAGGCAAAAUGGUGCCGUAACUUCGGGAGAAGGCACGCUGAUAUGUAGGUGAGGUCCCUCGCGGAUGGAG CUGAAAUCAGUCGAAGAUACCAGCUGGCUGCAACUGUUUAUUAAAAACACAGCACUGUGCAAACACGAAAGUGGACGUAU ACGGUGUGACGCCU(2MG)CCCGGUGCCGGAAGGUUAAUUGAUGGGGUUAGCGCAAGCGAAGCUCUUGAUCGAAGCCCCG GUAAACGGCGGCCG(PSU)AAC(3TD)A(PSU)AACGGUCCUAAGGUAGCGAAA(5MU)UCCUUGUCGGGUAAGUUCCGA C(5MC)UGCACGAAUGGCGUAAUGAUGGCCAGGCUGUCUCCACCCGAGACUCAGUGAAAUUGAACUCGCUGUG(6MZ)AG AUGCAGUGUACCCGCGGCAAGACGGAAAGACCCCGU(G7M)AACCUUUACUAUAGCUUGACACUGAACAUUGAGCCUUGA UGUGUAGGAUAGGUGGGAGGCUUUGAAGUGUGGACGCCAGUCUGCAUGGAGCCGACCUUGAAAUACCACCCUUUAAUGUU UGAUGUUCUAACGUUGACCCGUAAUCCGGGUUGCGGACAGUGUCUGGUGGGUAGUUUGACUG(OMG)GGCGGUCUCCUCC UAAAGAGUAACGGAGGAGCACGAAGGUUGGCUAAUCCUGGUCGGACAUCAGGAGGUUAGUGCAAUGGCAUAAGCCAGCUU GACUGCGAGCGUGACGGCGCGAGCAGGUGCGAAAGCAGGUCAUAGUGAUCCGGUGGUUCUGAAUGGAAGGGCCAUCGCUC AACGGAUAAAAGGUACUCCG(2MG)GGAUAACAGGC(PSU)GAUACCGCCCAAGAGUUCAUAUCGACGGCGGUGUUUGGC A(OMC)CUCG(2MA)(PSU)GUCGGCUCAUCACAUCCUGGGGCUGAAGUAGGUCCCAAGGGUAUGGC(OMU)GUUCGCCA UUUAAAGUGGUACGCGAGC(PSU)GGGUUUAGAACGUCGUGAGACAGU(PSU)CGGUCCCUAUCUGCCGUGGGCGCUGGA GAACUGAGGGGGGCUGCUCCUAGUACGAGAGGACCGGAGUGGACGCAUCACUGGUGUUCGGGUUGUCAUGCCAAUGGCAC UGCCCGGUAGCUAAAUGCGGAAGAGAUAAGUGCUGAAAGCAUCUAAGCACGAAACUUGCCCCGAGAUGAGUUCUCCCUGA CCCUUUAAGGGUCCUGAAGGAACGUUGAAGACGACGACGUUGAUAGGCCGGGUGUGUAAGCGCAGCGAUGCGUUGAGCUA ACCGGUACUAAUGAACCGUGAGGCUUAACCUU 16S ribosomal RNA Escherichia coli 0.49740596899999995 1 AAAUUGAAGAGUUUGAUCAUGGCUCAGAUUGAACGCUGGCGGCAGGCCUAACACAUGCAAGUCGAACGGUAACAGGAAGA AGCUUGCUUCUUUGCUGACGAGUGGCGGACGGGUGAGUAAUGUCUGGGAAACUGCCUGAUGGAGGGGGAUAACUACUGGA AACGGUAGCUAAUACCGCAUAACGUCGCAAGACCAAAGAGGGGGACCUUCGGGCCUCUUGCCAUCGGAUGUGCCCAGAUG GGAUUAGCUAGUAGGUGGGGUAACGGCUCACCUAGGCGACGAUCCCUAGCUGGUCUGAGAGGAUGACCAGCCACACUGGA ACUGAGACACGGUCCAGACUCCUACGGGAGGCAGCAGUGGGGAAUAUUGCACAAUGGGCGCAAGCCUGAUGCAGCCAUGC CGCGUGUAUGAAGAAGGCCUUCGGGUUGUAAAGUACUUUCAGCGGGGAGGAAGGGAGUAAAGUUAAUACCUUUGCUCAUU GACGUUACCCGCAGAAGAAGCACCGGCUAACUCCG(PSU)GCCAGCAGCC(7MG)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 CP032808.1 5S ribosomal RNA Escherichia coli 0.03879008999999999 1 UGCCUGGCGGCCGUAGCGCGGUGGUCCCACCUGACCCCAUGCCGAACUCAGAAGUGAAACGCCGUAGCGCCGAUGGUAGU GUGGGGUCUCCCCAUGCGAGAGUAGGGAACUGCCAGGCAU CP035706.1 fMet-NH-tRNA(fMet) Escherichia coli 0.024806922 1 CGCGGGGU(4SU)GAGCAGCCUGG(H2U)AGCUCGUCGGG(4OC)UCAUAACCCGAAGAUCGUCGG(5MU)(PSU)CAAA UCCGGCCCCCGCAACC(8AN) CP025520.1 50S ribosomal protein L31 Escherichia coli 0.007887116999999999 1 LEVO MKKDIHPKYEEITASCSCGNVMKIRSTVGHDLNLDVCSKCHPFFTGKQRDVATGGRVDRFNKRFNIPGSK U9XX47 50S ribosomal protein L32 Escherichia coli 0.006463444999999999 1 LEVO MAVQQNKPTRSKRGMRRSHDALTAVTSLSVDKTSGEKHLRHHITADGYYRGRKVIAK P0A7N4 50S ribosomal protein L33 Escherichia coli 0.006388631 1 LEVO MAKGIREKIKLVSSAGTGHFYTTTKNKRTKPEKLELKKFDPVVRQHVIYKEAKIK P0A7N9 50S ribosomal protein L34 Escherichia coli 0.005397463 1 LEVO MKRTFQPSVLKRNRSHGFRARMATKNGRQVLARRRAKGRARLTVSK P0A7P5 50S ribosomal protein L35 Escherichia coli 0.007313032 1 LEVO MPKIKTVRGAAKRFKKTGKGGFKHKHANLRHILTKKATKRKRHLRPKAMVSKGDLGLVIACLPYA P0A7Q1 50S ribosomal protein L36 Escherichia coli 0.00437739 1 LEVO MKVRASVKKLCRNCKIVKRDGVIRVICSAEPKHKQRQG P0A7Q6 30S ribosomal protein S2 Escherichia coli 0.026781669999999997 1 LEVO MATVSMRDMLKAGVHFGHQTRYWNPKMKPFIFGARNKVHIINLEKTVPMFNEALAELNKIASRKGKILFVGTKRAASEAV KDAALSCDQFFVNHRWLGGMLTNWKTVRQSIKRLKDLETQSQDGTFDKLTKKEALMRTRELEKLENSLGGIKDMGGLPDA LFVIDADHEHIAIKEANNLGIPVFAIVDTNSDPDGVDFVIPGNDDAIRAVTLYLGAVAATVREGRSQDLASQAEESFVEA E C3TPN2 30S ribosomal protein S3 Escherichia coli 0.026031316 1 LEVO MGQKVHPNGIRLGIVKPWNSTWFANTKEFADNLDSDFKVRQYLTKELAKASVSRIVIERPAKSIRVTIHTARPGIVIGKK GEDVEKLRKVVADIAGVPAQINIAEVRKPELDAKLVADSITSQLERRVMFRRAMKRAVQNAMRLGAKGIKVEVSGRLGGA EIARTEWYREGRVPLHTLRADIDYNTSEAHTTYGVIGVKVWIFKGEILGGMAAVEQPEKPAAQPKKQQRKGRK C3SQX2 30S ribosomal protein S4 Escherichia coli 0.023514199 1 LEVO MARYLGPKLKLSRREGTDLFLKSGVRAIDTKCKIEQAPGQHGARKPRLSDYGVQLREKQKVRRIYGVLERQFRNYYKEAA RLKGNTGENLLALLEGRLDNVVYRMGFGATRAEARQLVSHKAIMVNGRVVNIASYQVSPNDVVSIREKAKKQSRVKAALE LAEQREKPTWLEVDAGKMEGTFKRKPERSDLSADINEHLIVELYSK C3SR62 30S ribosomal protein S5 Escherichia coli 0.017629398 1 LEVO MAHIEKQAGELQEKLIAVNRVSKTVKGGRIFSFTALTVVGDGNGRVGFGYGKAREVPAAIQKAMEKARRNMINVALNNGT LQHPVKGVHTGSRVFMQPASEGTGIIAGGAMRAVLEVAGVHNVLAKAYGSTNPINVVRATIDGLENMNSPEMVAAKRGKS VEEILGK C3SR27 30S ribosomal protein S6 Escherichia coli 0.015727512 1 LEVO MRHYEIVFMVHPDQSEQVPGMIERYTAAITGAEGKIHRLEDWGRRQLAYPINKLHKAHYVLMNVEAPQEVIDELETTFRF NDAVIRSMVMRTKHAVTEASPMVKAKDERRERRDDFANETADDAEAGDSEEEEEE P02358 30S ribosomal protein S7 Escherichia coli K12 0.020055155999999998 1 LEVO MPRRRVIGQRKILPDPKFGSELLAKFVNILMVDGKKSTAESIVYSALETLAQRSGKSELEAFEVALENVRPTVEVKSRRV GGSTYQVPVEVRPVRRNALAMRWIVEAARKRGDKSMALRLANELSDAAENKGTAVKKREDVHRMAEANKAFAHYRWLSLR SFSHQAGASSKQPALGYLN P02359 30S ribosomal protein S8 Escherichia coli 0.014146557 1 LEVO MSMQDPIADMLTRIRNGQAANKAAVTMPSSKLKVAIANVLKEEGFIEDFKVEGDTKPELELTLKYFQGKAVVESIQRVSR PGLRIYKRKDELPKVMAGLGIAVVSTSKGVMTDRAARQAGLGGEIICYVA C3SR12 30S ribosomal protein S9 Escherichia coli 0.01488627 1 LEVO MAENQYYGTGRRKSSAARVFIKPGNGKIVINQRSLEQYFGRETARMVVRQPLELVDMVEKLDLYITVKGGGISGQAGAIR HGITRALMEYDESLRSELRKAGFVTRDARQVERKKVGLRKARRRPQFSKR C3SRY2 30S ribosomal protein S10 Escherichia coli 0.011755597 1 LEVO MQNQRIRIRLKAFDHRLIDQATAEIVETAKRTGAQVRGPIPLPTRKERFTVLISPHVNKDARDQYEIRTHLRLVDIVEPT EKTVDALMRLDLAAGVDVQISLG C3SQT7 30S ribosomal protein S11 Escherichia coli 0.013870974999999999 1 LEVO MAKAPIRARKRVRKQVSDGVAHIHASFNNTIVTITDRQGNALGWATAGGSGFRGSRKSTPFAAQVAAERCADAVKEYGIK NLEVMVKGPGPGRESTIRALNAAGFRITNITDVTPIPHNGCRPPKKRRV C3SR57 30S ribosomal protein S12 Escherichia coli K12 0.013814248999999999 1 LEVO MATVNQLVRKPRARKVAKSNVPALEACPQKRGVCTRVYTTTPKKPNSALRKVCRVRLTNGFEVTSYIGGEGHNLQEHSVI LIRGGRVK(0TD)LPGVRYHTVRGALDCSGVKDRKQARSKYGVKRPKA P0A7S3 30S ribosomal protein S13 Escherichia coli 0.013128467 1 LEVO MARIAGINIPDHKHAVIALTSIYGVGKTRSKAILAAAGIAEDVKISELSEGQIDTLRDEVAKFVVEGDLRREISMSIKRL MDLGCYRGLRHRRGLPVRGQRTKTNARTRKGPRKPIKK C3SR52 30S ribosomal protein S14 Escherichia coli 0.011606559999999998 1 LEVO MAKQSMKAREVKRVALADKYFAKRAELKAIISDVNASDEDRWNAVLKLQTLPRDSSPSRQRNRCRQTGRPHGFLRKFGLS RIKVREAAMRGEIPGLKKASW C3SR07 30S ribosomal protein S15 Escherichia coli 0.010290816 1 LEVO MSLSTEATAKIVSEFGRDANDTGSTEVQVALLTAQINHLQGHFAEHKKDHHSRRGLLRMVSQRRKLLDYLKRKDVARYTQ LIERLGLRR C3SSQ7 30S ribosomal protein S16 Escherichia coli 0.009207571999999999 1 LEVO MVTIRLARHGAKKRPFYQVVVADSRNARNGRFIERVGFFNPIASEKEEGTRLDLDRIAHWVGQGATISDRVAALIKEVNK AA C3SYP2 30S ribosomal protein S17 Escherichia coli 0.009724491 1 LEVO MTDKIRTLQGRVVSDKMEKSIVVAIERFVKHPIYGKFIKRTTKLHVHDENNECGIGDVVEIRECRPLSKTKSWTLVRVVE KAVL C3SQY7 30S ribosomal protein S18 Escherichia coli 0.009005471999999999 1 LEVO MARYFRRRKFCRFTAEGVQEIDYKDIATLKNYITESGKIVPSRITGTRAKYQRQLARAIKRARYLSLLPYTDRHQ C3SFP7 30S ribosomal protein S19 Escherichia coli 0.010455355 1 LEVO MPRSLKKGPFIDLHLLKKVEKAVESGDKKPLRTWSRRSTIFPNMIGLTIAVHNGRQHVPVFVTDEMVGHKLGEFAPTRTY RGHAADKKAKKK C3SQW2 30S ribosomal protein S20 Escherichia coli 0.009708464 1 LEVO MANIKSAKKRAIQSEKARKHNASRRSMMRTFIKKVYAAIEAGDKAAAQKAFNEMQPIVDRQAAKGLIHKNKAARHKANLT AQINKLA C3TRH7 30S ribosomal protein S21 Escherichia coli 0.008524039 1 LEVO MPVIKVRENEPFDVALRRFKRSCEKAGVLAEVRRREFYEKPTTERKRAKASAVKRHAKKLARENARRTRLY C3STZ7 mRNA Encephalomyocarditis virus 0.037684394999999996
EMCV frameshift site flanked by the bacterial 5' UTR with Shine-Dalgarno sequence and 18 nt downstream region of the putative structure
1 GGGAAUUCAAAAAUUGUUAAGAAUUAAGGAGAUAUACAUAUGGAGGUUUUUAUCACUCAAGGAGCGGCAGUGUCAUCAAU GGCUCAAACCCUACUGCCGAACGACUUGGCCAGAUCU Protein 2A Mengo encephalomyocarditis virus 0.017831182 3 Escherichia coli LEVO SPNPLDVSKTYPTLHILLQFNHRGLEARIFRHGQLWAETHAEVVLRSKTKQISFLSNGSYPSMDATTPLNPWKSTYQAVL RAEPHRVTMDVYHKRIRPFRLPLVQKEWRTCEENVFGLYHVFETHYAGYFSDLLIHDVETNPGGSKHHHHHH P12296 MAGNESIUM ION 2.4305e-05 437 MG N-FORMYLMETHIONINE 0.000177221 1 FME ZINC ION 6.5409e-05 2 ZN water 1.8015e-05 2 HOH singleParticle particle 7.5 20.0 HEPES 100.0 potassium acetate 2.2 magnesium chloride 2.0 dithiothreitol 5.0 Tris-HCl 7.0 ammonium acetate 3.0 potassium chloride
Initiated 70S ribosomes in 50 mM Tris-HCl pH 7.5, 70 mM NH4Cl, 30 mM KCl, 7 mM MgCl2 were diluted tenfold into 20 mM HEPES pH 7.5, 100 mM potassium acetate, 1.5 mM MgCl2, 2.0 mM DTT. 2A protein was dialysed (3K MWCO, 277K, 16 h) into the same buffer. Crosslinking reactions of 50 microliters comprising 75 nM ribosomes, 3.0 micromolar 2A and 2.0 mM bis(sulfosuccinimidyl)suberate (BS3) were performed on ice (30 min) immediately prior to grid preparation.
 Quantifoil R2/2 COPPER 400 CARBON HOLEY GLOW DISCHARGE AIR ETHANE 100 277 FEI VITROBOT MARK IV
Quantifoil R 2/2 400-mesh copper supports were coated with an additional ~ 60 angstrom layer of amorphous, evaporated carbon by flotation and thoroughly dried before use. Grids were made hydrophilic by glow-discharge in air for 30 s. Three microliters of crosslinking reaction was applied to grids which were then blotted for 4.5 s and vitrified by plunging into liquid ethane using a Vitrobot MK IV (FEI) at 277K, 100% relative humidity..
75 nM ribosomes, 3.0 micromolar 2A crosslinked with 2.0 mM bis(sulfosuccinimidyl)suberate (BS3)
 FEI TITAN KRIOS FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 300 100.0 2.7 1.2 3.0 75000.0 FEI TITAN KRIOS AUTOGRID HOLDER NITROGEN FEI FALCON III (4k x 4k) INTEGRATING 1 5730 0.59 54.4
Images were collected as 23-frame movies. Autofocus every 10 micrometres, no drift measurement, 7 sec delay after stage shift and 3 sec delay after image shift
 1
Movie frames were aligned and a dose-weighted average calculated with MotionCor2
820475
Reference-free autopicking of particles was performed using the Laplacian-of-Gaussian function in Relion (200 - 250 angstrom diameter)
 CTFFIND 4 RELION 3.1
The contrast transfer function (CTF) was estimated per-image using CtfFind4. All further phase+amplitude correction was performed internally in Relion. Per-particle CTF refinement was done after polishing
PHASE FLIPPING AND AMPLITUDE CORRECTION EMD-3493
Map was low-pass filtered to 80 angstroms resolution
 1 C1 FOURIER SPACE 2.66 FSC 0.143 CUT-OFF RELION 3.1 120749 MAXIMUM LIKELIHOOD RELION 3.1 MAXIMUM LIKELIHOOD RELION 3.1 6 20124.0 RELION 3.1
Focussed classification with signal subtraction and local angular searches was performed to separate particles based on 2A occupancy at the factor binding site
 emd_12635.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 450 450 450 0 0 0 450 450 450 481.50003 481.50003 481.50003 90.0 90.0 90.0 X Y Z -0.4982394 1.0113602 0.00007548818 0.020886237 1.07 1.07 1.07 0.05 AUTHOR Post-processed, masked map weighted by local resolution 5MDZ PDB experimental model FLEXIBLE FIT Correlation coefficient REAL emd_12635_msk_1.map emd_12635_additional_1.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 450 450 450 0 0 0 450 450 450 481.50003 481.50003 481.50003 90.0 90.0 90.0 X Y Z -0.037524287 0.12852785 -0.000010654006 0.0060708346 1.07 1.07 1.07 AUTHOR Unmasked map from Refine3D emd_12635_additional_2.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 450 450 450 0 0 0 450 450 450 481.50003 481.50003 481.50003 90.0 90.0 90.0 X Y Z -0.04483378 0.13580213 0.000033477332 0.006472365 1.07 1.07 1.07 AUTHOR Unmasked, unfiltered half-map (1) from Refine3D emd_12635_additional_3.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 450 450 450 0 0 0 450 450 450 481.50003 481.50003 481.50003 90.0 90.0 90.0 X Y Z -0.03736232 0.13285308 0.0000315238 0.006470219 1.07 1.07 1.07 AUTHOR Unmasked, unfiltered half-map (2) from Refine3D