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- EMDB-8621: The cryo-EM structure of YjeQ bound to the 30S subunit suggests a... -

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Basic information

Entry
Database: EMDB / ID: EMD-8621
TitleThe cryo-EM structure of YjeQ bound to the 30S subunit suggests a fidelity checkpoint function for this protein in ribosome assembly
Map dataStructure of the mature 30S subunit in complex with YjeQ (RsgA) GTPase
Sample
  • Complex: Structure of the 30S subunit in complex with YjeQ GTPase
    • RNA: x 1 types
    • Protein or peptide: x 20 types
  • Ligand: x 2 types
Function / homology
Function and homology information


guanosine tetraphosphate binding / mRNA base-pairing translational repressor activity / ornithine decarboxylase inhibitor activity / Hydrolases; Acting on acid anhydrides; In phosphorus-containing anhydrides / transcription antitermination factor activity, RNA binding / four-way junction DNA binding / negative regulation of translational initiation / mRNA regulatory element binding translation repressor activity / DNA endonuclease activity / transcription elongation factor complex ...guanosine tetraphosphate binding / mRNA base-pairing translational repressor activity / ornithine decarboxylase inhibitor activity / Hydrolases; Acting on acid anhydrides; In phosphorus-containing anhydrides / transcription antitermination factor activity, RNA binding / four-way junction DNA binding / negative regulation of translational initiation / mRNA regulatory element binding translation repressor activity / DNA endonuclease activity / transcription elongation factor complex / regulation of DNA-templated transcription elongation / transcription antitermination / maintenance of translational fidelity / DNA-templated transcription termination / mRNA 5'-UTR binding / ribosomal small subunit biogenesis / small ribosomal subunit rRNA binding / ribosomal small subunit assembly / GDP binding / cytosolic small ribosomal subunit / ribosome biogenesis / cytoplasmic translation / small ribosomal subunit / tRNA binding / negative regulation of translation / rRNA binding / ribosome / structural constituent of ribosome / ribonucleoprotein complex / translation / response to antibiotic / mRNA binding / GTPase activity / GTP binding / zinc ion binding / membrane / metal ion binding / cytosol / cytoplasm
Similarity search - Function
Ribosome biogenesis GTPase RsgA / RsgA GTPase domain / RsgA GTPase / EngC GTPase domain profile. / Circularly permuted (CP)-type guanine nucleotide-binding (G) domain / Circularly permuted (CP)-type guanine nucleotide-binding (G) domain profile. / Ribosomal protein S14, bacterial/plastid / Ribosomal protein S16, conserved site / Ribosomal protein S16 signature. / Ribosomal protein S3, bacterial-type ...Ribosome biogenesis GTPase RsgA / RsgA GTPase domain / RsgA GTPase / EngC GTPase domain profile. / Circularly permuted (CP)-type guanine nucleotide-binding (G) domain / Circularly permuted (CP)-type guanine nucleotide-binding (G) domain profile. / Ribosomal protein S14, bacterial/plastid / Ribosomal protein S16, conserved site / Ribosomal protein S16 signature. / Ribosomal protein S3, bacterial-type / Ribosomal protein S6, conserved site / Ribosomal protein S6 signature. / Ribosomal protein S19, bacterial-type / Ribosomal protein S7, bacterial/organellar-type / Ribosomal protein S11, bacterial-type / Ribosomal protein S13, bacterial-type / Ribosomal protein S20 / Ribosomal protein S20 superfamily / Ribosomal protein S20 / Ribosomal protein S9, bacterial/plastid / Ribosomal protein S4, bacterial-type / 30S ribosomal protein S17 / Ribosomal protein S5, bacterial-type / Ribosomal protein S6, plastid/chloroplast / Ribosomal protein S2, bacteria/mitochondria/plastid / Ribosomal protein S18, conserved site / Ribosomal protein S18 signature. / Ribosomal protein S16 / Ribosomal protein S16 / Ribosomal protein S16 domain superfamily / Ribosomal protein S15, bacterial-type / Ribosomal protein S2 signature 2. / Ribosomal protein S6 / Ribosomal protein S6 / Ribosomal protein S6 superfamily / Ribosomal protein S12, bacterial-type / Translation elongation factor EF1B/ribosomal protein S6 / Ribosomal protein S18 / Ribosomal protein S18 / Ribosomal protein S18 superfamily / K Homology domain / K homology RNA-binding domain / Ribosomal protein S3, conserved site / Ribosomal protein S14, conserved site / Ribosomal protein S10, conserved site / : / K Homology domain, type 2 / Ribosomal protein S3, C-terminal / Ribosomal protein S3, C-terminal domain superfamily / Ribosomal protein S15/S19, conserved site / KH domain / Ribosomal protein S19/S15 / Ribosomal protein S19/S15, superfamily / Ribosomal protein S10 / Ribosomal protein S3, C-terminal domain / Ribosomal protein S3 signature. / Ribosomal protein S10 signature. / Ribosomal protein S14 signature. / Ribosomal protein S7, conserved site / Ribosomal protein S17, conserved site / K homology domain superfamily, prokaryotic type / Ribosomal protein S19 / Ribosomal protein S2 signature 1. / Ribosomal protein S2, conserved site / Ribosomal protein S13, conserved site / Ribosomal protein S2 / Ribosomal protein S2, flavodoxin-like domain superfamily / Ribosomal protein S13 / 30s ribosomal protein S13, C-terminal / Ribosomal protein S2 / Ribosomal protein S4/S9 N-terminal domain / Ribosomal protein S14 / Ribosomal protein S4/S9, N-terminal / Ribosomal protein S4, conserved site / Type-2 KH domain profile. / Ribosomal protein S4/S9 N-terminal domain / Ribosomal protein S13/S18 / Ribosomal protein S4/S9 / Ribosomal protein S19 signature. / K homology domain-like, alpha/beta / Ribosomal protein S14p/S29e / Ribosomal protein S8 / Ribosomal protein S8 superfamily / Ribosomal protein S5, N-terminal, conserved site / Ribosomal protein S5 signature. / Ribosomal protein S5 / Ribosomal protein S5, N-terminal / Ribosomal S11, conserved site / Ribosomal protein S7 signature. / Ribosomal protein S10p/S20e / S5 double stranded RNA-binding domain profile. / Ribosomal protein S5, C-terminal / Ribosomal protein S9, conserved site / Ribosomal protein S5, N-terminal domain / Ribosomal protein S8 / Ribosomal protein S10 domain / Ribosomal protein S10 domain superfamily / Ribosomal protein S13-like, H2TH / Ribosomal protein S17 signature. / Ribosomal protein S5, C-terminal domain
Similarity search - Domain/homology
Small ribosomal subunit protein bS20 / Small ribosomal subunit protein uS2 / Small ribosomal subunit protein uS9 / Small ribosomal subunit protein uS4 / Small ribosomal subunit protein uS11 / Small ribosomal subunit protein uS8 / Small ribosomal subunit protein uS14 / Small ribosomal subunit protein uS17 / Small ribosomal subunit protein uS3 / Small ribosomal subunit protein uS19 ...Small ribosomal subunit protein bS20 / Small ribosomal subunit protein uS2 / Small ribosomal subunit protein uS9 / Small ribosomal subunit protein uS4 / Small ribosomal subunit protein uS11 / Small ribosomal subunit protein uS8 / Small ribosomal subunit protein uS14 / Small ribosomal subunit protein uS17 / Small ribosomal subunit protein uS3 / Small ribosomal subunit protein uS19 / Small ribosomal subunit protein uS10 / Small ribosomal subunit protein uS12 / Small ribosomal subunit protein bS16 / Small ribosomal subunit protein bS18 / Small ribosomal subunit protein bS6 / Small ribosomal subunit protein uS7 / Small ribosomal subunit protein uS10 / Small ribosomal subunit protein uS13 / Small ribosomal subunit protein uS13 / Small ribosomal subunit protein bS16 / Small ribosomal subunit protein uS19 / Small ribosomal subunit protein bS20 / Small ribosomal subunit protein uS2 / Small ribosomal subunit protein uS3 / Small ribosomal subunit protein uS4 / Small ribosomal subunit protein uS5 / Small ribosomal subunit protein uS5 / Small ribosomal subunit protein uS15 / Small ribosomal subunit protein uS14 / Small ribosomal subunit biogenesis GTPase RsgA / Small ribosomal subunit protein uS15
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
Methodsingle particle reconstruction / cryo EM / Resolution: 5.8 Å
AuthorsRazi A / Guarne A / Ortega J
Funding support Canada, 1 items
OrganizationGrant numberCountry
Canadian Institutes of Health Research (CIHR)MOP-82930 Canada
CitationJournal: Proc Natl Acad Sci U S A / Year: 2017
Title: The cryo-EM structure of YjeQ bound to the 30S subunit suggests a fidelity checkpoint function for this protein in ribosome assembly.
Authors: Aida Razi / Alba Guarné / Joaquin Ortega /
Abstract: Recent work suggests that bacterial YjeQ (RsgA) participates in the late stages of assembly of the 30S subunit and aids the assembly of the decoding center but also binds the mature 30S subunit with ...Recent work suggests that bacterial YjeQ (RsgA) participates in the late stages of assembly of the 30S subunit and aids the assembly of the decoding center but also binds the mature 30S subunit with high affinity. To determine the function and mechanisms of YjeQ in the context of the mature subunit, we determined the cryo-EM structure of the fully assembled 30S subunit in complex with YjeQ at 5.8-Å resolution. We found that binding of YjeQ stabilizes helix 44 into a conformation similar to that adopted by the subunit during proofreading. This finding indicates that, along with acting as an assembly factor, YjeQ has a role as a checkpoint protein, consisting of testing the proofreading ability of the 30S subunit. The structure also informs the mechanism by which YjeQ implements the release from the 30S subunit of a second assembly factor, called RbfA. Finally, it reveals how the 30S subunit stimulates YjeQ GTPase activity and leads to release of the protein. Checkpoint functions have been described for eukaryotic ribosome assembly factors; however, this work describes an example of a bacterial assembly factor that tests a specific translation mechanism of the 30S subunit.
History
DepositionFeb 24, 2017-
Header (metadata) releaseApr 19, 2017-
Map releaseApr 19, 2017-
UpdateJan 15, 2020-
Current statusJan 15, 2020Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.0309
  • Imaged by UCSF Chimera
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  • Surface view colored by height
  • Surface level: 0.0309
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-5uz4
  • Surface level: 0.0309
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

Downloads & links

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Map

FileDownload / File: emd_8621.map.gz / Format: CCP4 / Size: 40.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationStructure of the mature 30S subunit in complex with YjeQ (RsgA) GTPase
Voxel sizeX=Y=Z: 1.45 Å
Density
Contour LevelBy AUTHOR: 0.0309 / Movie #1: 0.0309
Minimum - Maximum-0.034293998 - 0.09952094
Average (Standard dev.)0.0011337413 (±0.0060786973)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions220220220
Spacing220220220
CellA=B=C: 319.0 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.451.451.45
M x/y/z220220220
origin x/y/z0.0000.0000.000
length x/y/z319.000319.000319.000
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS220220220
D min/max/mean-0.0340.1000.001

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Supplemental data

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Sample components

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Entire : Structure of the 30S subunit in complex with YjeQ GTPase

EntireName: Structure of the 30S subunit in complex with YjeQ GTPase
Components
  • Complex: Structure of the 30S subunit in complex with YjeQ GTPase
    • RNA: 16S RIBOSOMAL RNA
    • Protein or peptide: 30S ribosomal protein S3
    • Protein or peptide: 30S ribosomal protein S4
    • Protein or peptide: 30S ribosomal protein S5
    • Protein or peptide: 30S ribosomal protein S6
    • Protein or peptide: 30S ribosomal protein S7
    • Protein or peptide: 30S ribosomal protein S8
    • Protein or peptide: 30S ribosomal protein S9
    • Protein or peptide: 30S ribosomal protein S10
    • Protein or peptide: 30S ribosomal protein S11
    • Protein or peptide: 30S ribosomal protein S12
    • Protein or peptide: 30S ribosomal protein S13
    • Protein or peptide: 30S ribosomal protein S14
    • Protein or peptide: 30S ribosomal protein S15
    • Protein or peptide: 30S ribosomal protein S16
    • Protein or peptide: 30S ribosomal protein S17
    • Protein or peptide: 30S ribosomal protein S18
    • Protein or peptide: 30S ribosomal protein S19
    • Protein or peptide: 30S ribosomal protein S20
    • Protein or peptide: 30S ribosomal protein S2
    • Protein or peptide: Small ribosomal subunit biogenesis GTPase RsgA
  • Ligand: ZINC ION
  • Ligand: 3'-O-(N-methylanthraniloyl)-beta:gamma-imidoguanosine-5'-triphosphate

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Supramolecule #1: Structure of the 30S subunit in complex with YjeQ GTPase

SupramoleculeName: Structure of the 30S subunit in complex with YjeQ GTPase
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#21
Source (natural)Organism: Escherichia coli (E. coli)

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Macromolecule #1: 16S RIBOSOMAL RNA

MacromoleculeName: 16S RIBOSOMAL RNA / type: rna / ID: 1 / Number of copies: 1
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 494.971188 KDa
SequenceString: GAAGAGUUUG AUCAUGGCUC AGAUUGAACG CUGGCGGCAG GCCUAACACA UGCAAGUCGA ACGGUAACAG GAAGAAGCUU GCUUCUUUG CUGACGAGUG GCGGACGGGU GAGUAAUGUC UGGGAAACUG CCUGAUGGAG GGGGAUAACU ACUGGAAACG G UAGCUAAU ...String:
GAAGAGUUUG AUCAUGGCUC AGAUUGAACG CUGGCGGCAG GCCUAACACA UGCAAGUCGA ACGGUAACAG GAAGAAGCUU GCUUCUUUG CUGACGAGUG GCGGACGGGU GAGUAAUGUC UGGGAAACUG CCUGAUGGAG GGGGAUAACU ACUGGAAACG G UAGCUAAU ACCGCAUAAC GUCGCAAGAC CAAAGAGGGG GACCUUCGGG CCUCUUGCCA UCGGAUGUGC CCAGAUGGGA UU AGCUAGU AGGUGGGGUA ACGGCUCACC UAGGCGACGA UCCCUAGCUG GUCUGAGAGG AUGACCAGCC ACACUGGAAC UGA GACACG GUCCAGACUC CUACGGGAGG CAGCAGUGGG GAAUAUUGCA CAAUGGGCGC AAGCCUGAUG CAGCCAUGCC GCGU GUAUG AAGAAGGCCU UCGGGUUGUA AAGUACUUUC AGCGGGGAGG AAGGGAGUAA AGUUAAUACC UUUGCUCAUU GACGU UACC CGCAGAAGAA GCACCGGCUA ACUCCGUGCC AGCAGCCGCG GUAAUACGGA GGGUGCAAGC GUUAAUCGGA AUUACU GGG CGUAAAGCGC ACGCAGGCGG UUUGUUAAGU CAGAUGUGAA AUCCCCGGGC UCAACCUGGG AACUGCAUCU GAUACUA GC AAGCUUGAGU CUCGUAGAGG GGGGUAGAAU UCCAGGUGUA GCGGUGAAAU GCGUAGAGAU CUGGAGGAAU ACCGGUGG C GAAGGCGGCC CCCUGGACGA AGACUGACGC UCAGGUGCGA AAGCGUGGGG AGCAAACAGG AUUAGAUACC CUGGUAGUC CACGCCGUAA ACGAUGUCGA CUUGGAGGUU GUGCCCUUGA GGCGUGGCUU CCGGAGCUAA CGCGUUAAGU CGACCGCCUG GGGAGUACG GCCGCAAGGU UAAAACUCAA AUGAAUUGAC GGGGGCCCGC ACAAGCGGUG GAGCAUGUGG UUUAAUUCGA U GCAACGCG AAGAACCUUA CCUGGUCUUG ACAUCCACGG AAGUUUUCAG AGAUGAGAAU GUGCCUUCGG GAACCGUGAG AC AGGUGCU GCAUGGCUGU CGUCAGCUCG UGUUGUGAAA UGUUGGGUUA AGUCCCGCAA CGAGCGCAAC CCUUAUCCUU UGU UGCCAG CGGUCCGGCC GGGAACUCAA AGGAGACUGC CAGUGAUAAA CUGGAGGAAG GUGGGGAUGA CGUCAAGUCA UCAU GGCCC UUACGACCAG GGCUACACAC GUGCUACAAU GGCGCAUACA AAGAGAAGCG ACCUCGCGAG AGCAAGCGGA CCUCA UAAA GUGCGUCGUA GUCCGGAUUG GAGUCUGCAA CUCGACUCCA UGAAGUCGGA AUCGCUAGUA AUCGUGGAUC AGAAUG CCA CGGUGAAUAC GUUCCCGGGC CUUGUACACA CCGCCCGUCA CACCAUGGGA GUGGGUUGCA AAAGAAGUAG GUAGCUU AA CCUUCGGGAG GGCGCUUACC ACUUUGUGAU UCAUGACUGG GGUGAAGUCG UAACAAGGUA ACCGUAGGGG AACCUGCG G UUGGAU

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Macromolecule #2: 30S ribosomal protein S3

MacromoleculeName: 30S ribosomal protein S3 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 26.031316 KDa
SequenceString: MGQKVHPNGI RLGIVKPWNS TWFANTKEFA DNLDSDFKVR QYLTKELAKA SVSRIVIERP AKSIRVTIHT ARPGIVIGKK GEDVEKLRK VVADIAGVPA QINIAEVRKP ELDAKLVADS ITSQLERRVM FRRAMKRAVQ NAMRLGAKGI KVEVSGRLGG A EIARTEWY ...String:
MGQKVHPNGI RLGIVKPWNS TWFANTKEFA DNLDSDFKVR QYLTKELAKA SVSRIVIERP AKSIRVTIHT ARPGIVIGKK GEDVEKLRK VVADIAGVPA QINIAEVRKP ELDAKLVADS ITSQLERRVM FRRAMKRAVQ NAMRLGAKGI KVEVSGRLGG A EIARTEWY REGRVPLHTL RADIDYNTSE AHTTYGVIGV KVWIFKGEIL GGMAAVEQPE KPAAQPKKQQ RKGRK

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Macromolecule #3: 30S ribosomal protein S4

MacromoleculeName: 30S ribosomal protein S4 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 23.514199 KDa
SequenceString: MARYLGPKLK LSRREGTDLF LKSGVRAIDT KCKIEQAPGQ HGARKPRLSD YGVQLREKQK VRRIYGVLER QFRNYYKEAA RLKGNTGEN LLALLEGRLD NVVYRMGFGA TRAEARQLVS HKAIMVNGRV VNIASYQVSP NDVVSIREKA KKQSRVKAAL E LAEQREKP ...String:
MARYLGPKLK LSRREGTDLF LKSGVRAIDT KCKIEQAPGQ HGARKPRLSD YGVQLREKQK VRRIYGVLER QFRNYYKEAA RLKGNTGEN LLALLEGRLD NVVYRMGFGA TRAEARQLVS HKAIMVNGRV VNIASYQVSP NDVVSIREKA KKQSRVKAAL E LAEQREKP TWLEVDAGKM EGTFKRKPER SDLSADINEH LIVELYSK

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Macromolecule #4: 30S ribosomal protein S5

MacromoleculeName: 30S ribosomal protein S5 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 17.629398 KDa
SequenceString:
MAHIEKQAGE LQEKLIAVNR VSKTVKGGRI FSFTALTVVG DGNGRVGFGY GKAREVPAAI QKAMEKARRN MINVALNNGT LQHPVKGVH TGSRVFMQPA SEGTGIIAGG AMRAVLEVAG VHNVLAKAYG STNPINVVRA TIDGLENMNS PEMVAAKRGK S VEEILGK

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Macromolecule #5: 30S ribosomal protein S6

MacromoleculeName: 30S ribosomal protein S6 / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 15.211058 KDa
SequenceString:
MRHYEIVFMV HPDQSEQVPG MIERYTAAIT GAEGKIHRLE DWGRRQLAYP INKLHKAHYV LMNVEAPQEV IDELETTFRF NDAVIRSMV MRTKHAVTEA SPMVKAKDER RERRDDFANE TADDAEAGDS EE

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Macromolecule #6: 30S ribosomal protein S7

MacromoleculeName: 30S ribosomal protein S7 / type: protein_or_peptide / ID: 6 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 20.055156 KDa
SequenceString:
MPRRRVIGQR KILPDPKFGS ELLAKFVNIL MVDGKKSTAE SIVYSALETL AQRSGKSELE AFEVALENVR PTVEVKSRRV GGSTYQVPV EVRPVRRNAL AMRWIVEAAR KRGDKSMALR LANELSDAAE NKGTAVKKRE DVHRMAEANK AFAHYRWLSL R SFSHQAGA SSKQPALGYL N

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Macromolecule #7: 30S ribosomal protein S8

MacromoleculeName: 30S ribosomal protein S8 / type: protein_or_peptide / ID: 7 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 14.146557 KDa
SequenceString:
MSMQDPIADM LTRIRNGQAA NKAAVTMPSS KLKVAIANVL KEEGFIEDFK VEGDTKPELE LTLKYFQGKA VVESIQRVSR PGLRIYKRK DELPKVMAGL GIAVVSTSKG VMTDRAARQA GLGGEIICYV A

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Macromolecule #8: 30S ribosomal protein S9

MacromoleculeName: 30S ribosomal protein S9 / type: protein_or_peptide / ID: 8 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 14.88627 KDa
SequenceString:
MAENQYYGTG RRKSSAARVF IKPGNGKIVI NQRSLEQYFG RETARMVVRQ PLELVDMVEK LDLYITVKGG GISGQAGAIR HGITRALME YDESLRSELR KAGFVTRDAR QVERKKVGLR KARRRPQFSK R

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Macromolecule #9: 30S ribosomal protein S10

MacromoleculeName: 30S ribosomal protein S10 / type: protein_or_peptide / ID: 9 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 11.755597 KDa
SequenceString:
MQNQRIRIRL KAFDHRLIDQ ATAEIVETAK RTGAQVRGPI PLPTRKERFT VLISPHVNKD ARDQYEIRTH LRLVDIVEPT EKTVDALMR LDLAAGVDVQ ISLG

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Macromolecule #10: 30S ribosomal protein S11

MacromoleculeName: 30S ribosomal protein S11 / type: protein_or_peptide / ID: 10 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 13.870975 KDa
SequenceString:
MAKAPIRARK RVRKQVSDGV AHIHASFNNT IVTITDRQGN ALGWATAGGS GFRGSRKSTP FAAQVAAERC ADAVKEYGIK NLEVMVKGP GPGRESTIRA LNAAGFRITN ITDVTPIPHN GCRPPKKRRV

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Macromolecule #11: 30S ribosomal protein S12

MacromoleculeName: 30S ribosomal protein S12 / type: protein_or_peptide / ID: 11 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 13.768157 KDa
SequenceString:
MATVNQLVRK PRARKVAKSN VPALEACPQK RGVCTRVYTT TPKKPNSALR KVCRVRLTNG FEVTSYIGGE GHNLQEHSVI LIRGGRVKD LPGVRYHTVR GALDCSGVKD RKQARSKYGV KRPKA

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Macromolecule #12: 30S ribosomal protein S13

MacromoleculeName: 30S ribosomal protein S13 / type: protein_or_peptide / ID: 12 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 13.128467 KDa
SequenceString:
MARIAGINIP DHKHAVIALT SIYGVGKTRS KAILAAAGIA EDVKISELSE GQIDTLRDEV AKFVVEGDLR REISMSIKRL MDLGCYRGL RHRRGLPVRG QRTKTNARTR KGPRKPIKK

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Macromolecule #13: 30S ribosomal protein S14

MacromoleculeName: 30S ribosomal protein S14 / type: protein_or_peptide / ID: 13 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 11.60656 KDa
SequenceString:
MAKQSMKARE VKRVALADKY FAKRAELKAI ISDVNASDED RWNAVLKLQT LPRDSSPSRQ RNRCRQTGRP HGFLRKFGLS RIKVREAAM RGEIPGLKKA SW

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Macromolecule #14: 30S ribosomal protein S15

MacromoleculeName: 30S ribosomal protein S15 / type: protein_or_peptide / ID: 14 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 10.319882 KDa
SequenceString:
MSLSTEATAK IVSEFGRDAN DTGSTEVQVA LLTAQINHLQ GHFAEHKKDH HSRRGLLRMV SQRRKLLDYL KRKDVARYTR LIERLGLRR

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Macromolecule #15: 30S ribosomal protein S16

MacromoleculeName: 30S ribosomal protein S16 / type: protein_or_peptide / ID: 15 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 9.207572 KDa
SequenceString:
MVTIRLARHG AKKRPFYQVV VADSRNARNG RFIERVGFFN PIASEKEEGT RLDLDRIAHW VGQGATISDR VAALIKEVNK AA

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Macromolecule #16: 30S ribosomal protein S17

MacromoleculeName: 30S ribosomal protein S17 / type: protein_or_peptide / ID: 16 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 9.724491 KDa
SequenceString:
MTDKIRTLQG RVVSDKMEKS IVVAIERFVK HPIYGKFIKR TTKLHVHDEN NECGIGDVVE IRECRPLSKT KSWTLVRVVE KAVL

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Macromolecule #17: 30S ribosomal protein S18

MacromoleculeName: 30S ribosomal protein S18 / type: protein_or_peptide / ID: 17 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 9.005472 KDa
SequenceString:
MARYFRRRKF CRFTAEGVQE IDYKDIATLK NYITESGKIV PSRITGTRAK YQRQLARAIK RARYLSLLPY TDRHQ

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Macromolecule #18: 30S ribosomal protein S19

MacromoleculeName: 30S ribosomal protein S19 / type: protein_or_peptide / ID: 18 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 10.455355 KDa
SequenceString:
MPRSLKKGPF IDLHLLKKVE KAVESGDKKP LRTWSRRSTI FPNMIGLTIA VHNGRQHVPV FVTDEMVGHK LGEFAPTRTY RGHAADKKA KKK

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Macromolecule #19: 30S ribosomal protein S20

MacromoleculeName: 30S ribosomal protein S20 / type: protein_or_peptide / ID: 19 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 9.708464 KDa
SequenceString:
MANIKSAKKR AIQSEKARKH NASRRSMMRT FIKKVYAAIE AGDKAAAQKA FNEMQPIVDR QAAKGLIHKN KAARHKANLT AQINKLA

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Macromolecule #20: 30S ribosomal protein S2

MacromoleculeName: 30S ribosomal protein S2 / type: protein_or_peptide / ID: 20 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 26.78167 KDa
SequenceString: MATVSMRDML KAGVHFGHQT RYWNPKMKPF IFGARNKVHI INLEKTVPMF NEALAELNKI ASRKGKILFV GTKRAASEAV KDAALSCDQ FFVNHRWLGG MLTNWKTVRQ SIKRLKDLET QSQDGTFDKL TKKEALMRTR ELEKLENSLG GIKDMGGLPD A LFVIDADH ...String:
MATVSMRDML KAGVHFGHQT RYWNPKMKPF IFGARNKVHI INLEKTVPMF NEALAELNKI ASRKGKILFV GTKRAASEAV KDAALSCDQ FFVNHRWLGG MLTNWKTVRQ SIKRLKDLET QSQDGTFDKL TKKEALMRTR ELEKLENSLG GIKDMGGLPD A LFVIDADH EHIAIKEANN LGIPVFAIVD TNSDPDGVDF VIPGNDDAIR AVTLYLGAVA ATVREGRSQD LASQAEESFV EA E

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Macromolecule #21: Small ribosomal subunit biogenesis GTPase RsgA

MacromoleculeName: Small ribosomal subunit biogenesis GTPase RsgA / type: protein_or_peptide / ID: 21 / Number of copies: 1 / Enantiomer: LEVO
EC number: Hydrolases; Acting on acid anhydrides; In phosphorus-containing anhydrides
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 37.345172 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: LSKGQQRRVN ANHQRRLKTS KEKPDYDDNL FGEPDEGIVI SRFGMHADVE SADGDVHRCN IRRTIRSLVT GDRVVWRPGK PAAEGVNVK GIVEAVHERT SVLTRPDFYD GVKPIAANID QIVIVSAILP ELSLNIIDRY LVACETLQIE PIIVLNKIDL L DDEGMAFV ...String:
LSKGQQRRVN ANHQRRLKTS KEKPDYDDNL FGEPDEGIVI SRFGMHADVE SADGDVHRCN IRRTIRSLVT GDRVVWRPGK PAAEGVNVK GIVEAVHERT SVLTRPDFYD GVKPIAANID QIVIVSAILP ELSLNIIDRY LVACETLQIE PIIVLNKIDL L DDEGMAFV NEQMDIYRNI GYRVLMVSSH TQDGLKPLEE ALTGRISIFA GQSGVGKSSL LNALLGLQKE ILTNDISDNS GL GQHTTTA ARLYHFPHGG DVIDSPGVRE FGLWHLEPEQ ITQGFVEFHD YLGLCKYRDC KHDTDPGCAI REAVEEGKIA ETR FENYHR ILESMAQV

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Macromolecule #22: ZINC ION

MacromoleculeName: ZINC ION / type: ligand / ID: 22 / Number of copies: 1 / Formula: ZN
Molecular weightTheoretical: 65.409 Da

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Macromolecule #23: 3'-O-(N-methylanthraniloyl)-beta:gamma-imidoguanosine-5'-triphosphate

MacromoleculeName: 3'-O-(N-methylanthraniloyl)-beta:gamma-imidoguanosine-5'-triphosphate
type: ligand / ID: 23 / Number of copies: 1 / Formula: GGM
Molecular weightTheoretical: 655.343 Da
Chemical component information

ChemComp-GGM:
3'-O-(N-methylanthraniloyl)-beta:gamma-imidoguanosine-5'-triphosphate

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.5
GridModel: C-flat CFT-222C / Material: COPPER / Mesh: 200 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 298 K / Instrument: FEI VITROBOT MARK III

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Electron microscopy

MicroscopeFEI TECNAI F20
Electron beamAcceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 50.0 µm / Calibrated magnification: 34482 / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Cs: 2.0 mm / Nominal defocus max: 3.0 µm / Nominal defocus min: 0.5 µm / Nominal magnification: 25000
Sample stageSpecimen holder model: GATAN 626 SINGLE TILT LIQUID NITROGEN CRYO TRANSFER HOLDER
Cooling holder cryogen: NITROGEN
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Digitization - Frames/image: 1-20 / Average exposure time: 0.5 sec. / Average electron dose: 1.0 e/Å2
Experimental equipment
Model: Tecnai F20 / Image courtesy: FEI Company

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Image processing

Particle selectionNumber selected: 487018
Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

2avy
PDB Unreleased entry

Initial angle assignmentType: PROJECTION MATCHING / Software - Name: RELION (ver. 1.4)
Final 3D classificationSoftware - Name: RELION (ver. 1.4)
Final angle assignmentType: PROJECTION MATCHING / Software - Name: RELION (ver. 1.4)
Final reconstructionResolution.type: BY AUTHOR / Resolution: 5.8 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 130462
FSC plot (resolution estimation)

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Atomic model buiding 1

RefinementProtocol: OTHER
Output model

PDB-5uz4:
The cryo-EM structure of YjeQ bound to the 30S subunit suggests a fidelity checkpoint function for this protein in ribosome assembly

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