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- EMDB-51966: Complex 2 (BODY) 30S-IF1-IF3-tRNA-GE81112 -

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Basic information

Entry
Database: EMDB / ID: EMD-51966
TitleComplex 2 (BODY) 30S-IF1-IF3-tRNA-GE81112
Map dataComplex 2 (BODY): 30S-IF1-IF3-tRNA-GE81112 full map
Sample
  • Complex: Complex 2 (BODY): 30S-IF1-IF3-tRNA-GE81112
    • RNA: x 1 types
    • Protein or peptide: x 14 types
  • Ligand: x 3 types
KeywordsAntibiotic / initiation factor / GE81112 / 30S / RIBOSOME
Function / homology
Function and homology information


ribosome disassembly / ornithine decarboxylase inhibitor activity / misfolded RNA binding / Group I intron splicing / RNA folding / four-way junction DNA binding / negative regulation of translational initiation / regulation of mRNA stability / translation initiation factor activity / mRNA regulatory element binding translation repressor activity ...ribosome disassembly / ornithine decarboxylase inhibitor activity / misfolded RNA binding / Group I intron splicing / RNA folding / four-way junction DNA binding / negative regulation of translational initiation / regulation of mRNA stability / translation initiation factor activity / mRNA regulatory element binding translation repressor activity / response to cold / positive regulation of RNA splicing / DNA endonuclease activity / transcription antitermination / DNA-templated transcription termination / maintenance of translational fidelity / mRNA 5'-UTR binding / regulation of translation / ribosome binding / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit / small ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / cytoplasmic translation / tRNA binding / rRNA binding / structural constituent of ribosome / ribosome / translation / response to antibiotic / RNA binding / zinc ion binding / membrane / cytosol / cytoplasm
Similarity search - Function
Translation initiation factor 3, conserved site / Initiation factor 3 signature. / Translation initiation factor 3, C-terminal / Translation initiation factor IF-3, C-terminal domain / Translation initiation factor IF-1 / Translation initiation factor 3 / Translation initiation factor 3, N-terminal / Translation initiation factor 3 (IF-3), N-terminal domain superfamily / Translation initiation factor 3 (IF-3), C-terminal domain superfamily / Translation initiation factor IF-3, N-terminal domain ...Translation initiation factor 3, conserved site / Initiation factor 3 signature. / Translation initiation factor 3, C-terminal / Translation initiation factor IF-3, C-terminal domain / Translation initiation factor IF-1 / Translation initiation factor 3 / Translation initiation factor 3, N-terminal / Translation initiation factor 3 (IF-3), N-terminal domain superfamily / Translation initiation factor 3 (IF-3), C-terminal domain superfamily / Translation initiation factor IF-3, N-terminal domain / RNA-binding domain, S1, IF1 type / Translation initiation factor 1A / IF-1 / S1 domain IF1 type profile. / Ribosomal protein S21, conserved site / Ribosomal protein S21 signature. / Ribosomal protein S1-like RNA-binding domain / Ribosomal protein S21 superfamily / S1 domain / Ribosomal protein S21 / Ribosomal protein S16, conserved site / Ribosomal protein S16 signature. / Ribosomal protein S21 / Ribosomal protein S6, conserved site / Ribosomal protein S6 signature. / Ribosomal protein S11, bacterial-type / Ribosomal protein S20 / Ribosomal protein S20 superfamily / Ribosomal protein S20 / Ribosomal protein S4, bacterial-type / 30S ribosomal protein S17 / Ribosomal protein S5, bacterial-type / Ribosomal protein S6, plastid/chloroplast / Ribosomal protein S18, conserved site / Ribosomal protein S18 signature. / Ribosomal protein S16 / Ribosomal protein S16 domain superfamily / Ribosomal protein S16 / Ribosomal protein S15, bacterial-type / 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 / Ribosomal protein S5, N-terminal, conserved site / Ribosomal protein S5 signature. / : / Ribosomal protein S17, conserved site / Ribosomal protein S17 signature. / Ribosomal protein S5 / S5 double stranded RNA-binding domain profile. / Ribosomal protein S5, N-terminal / Ribosomal protein S5, C-terminal / Ribosomal protein S5, N-terminal domain / Ribosomal protein S5, C-terminal domain / Ribosomal protein S8 signature. / Ribosomal protein S4/S9 N-terminal domain / Ribosomal protein S4, conserved site / Ribosomal protein S15 signature. / Ribosomal protein S4 signature. / Ribosomal protein S4/S9 N-terminal domain / Ribosomal protein S4/S9, N-terminal / Ribosomal protein S4/S9 / Ribosomal protein S8 / Ribosomal protein S8 superfamily / Ribosomal protein S8 / S4 RNA-binding domain profile. / Ribosomal S11, conserved site / Ribosomal protein S11 signature. / S4 RNA-binding domain / S4 domain / RNA-binding S4 domain / Ribosomal protein S11 / RNA-binding S4 domain superfamily / Ribosomal protein S11 / Ribosomal protein S12 signature. / Ribosomal protein S12/S23 / Ribosomal protein S12/S23 / Ribosomal protein S17/S11 / Ribosomal protein S17 / Ribosomal protein S15 / Ribosomal_S15 / Ribosomal protein S15 / Ribosomal protein S11 superfamily / S15/NS1, RNA-binding / Ribosomal protein S5 domain 2-type fold, subgroup / Ribosomal protein S5 domain 2-type fold / Nucleic acid-binding, OB-fold
Similarity search - Domain/homology
Small ribosomal subunit protein bS6 / Translation initiation factor IF-3 / Small ribosomal subunit protein uS11 / Small ribosomal subunit protein uS12 / Small ribosomal subunit protein bS16 / Small ribosomal subunit protein bS18 / Small ribosomal subunit protein bS20 / Small ribosomal subunit protein uS4 / Small ribosomal subunit protein uS5 / Small ribosomal subunit protein uS8 ...Small ribosomal subunit protein bS6 / Translation initiation factor IF-3 / Small ribosomal subunit protein uS11 / Small ribosomal subunit protein uS12 / Small ribosomal subunit protein bS16 / Small ribosomal subunit protein bS18 / Small ribosomal subunit protein bS20 / Small ribosomal subunit protein uS4 / Small ribosomal subunit protein uS5 / Small ribosomal subunit protein uS8 / Small ribosomal subunit protein uS15 / Small ribosomal subunit protein uS17 / Small ribosomal subunit protein bS21 / Translation initiation factor IF-1
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.2 Å
AuthorsSchedlbauer A / Han X / van Bakel W / Kaminishi T / Ochoa-Lizarralde B / Iturrioz I / Capuni R / Parry R / Zegarra R / Gil-Carton D ...Schedlbauer A / Han X / van Bakel W / Kaminishi T / Ochoa-Lizarralde B / Iturrioz I / Capuni R / Parry R / Zegarra R / Gil-Carton D / Lopez-Alonso JP / Barragan Sanz K / Brandi L / Gualerzi CO / Fucini P / Connell SR
Funding support Spain, 1 items
OrganizationGrant numberCountry
Ministerio de Ciencia e Innovacion (MCIN)PID2021-122705OB-I00 Spain
CitationJournal: bioRxiv / Year: 2024
Title: A binding site for the antibiotic GE81112 in the ribosomal mRNA channel.
Authors: Andreas Schedlbauer / Xu Han / Wouter van Bakel / Tatsuya Kaminishi / Borja Ochoa-Lizarralde / Idoia Iturrioz / Retina Çapuni / Ransford Parry / Ronny Zegarra / David Gil-Carton / Jorge P ...Authors: Andreas Schedlbauer / Xu Han / Wouter van Bakel / Tatsuya Kaminishi / Borja Ochoa-Lizarralde / Idoia Iturrioz / Retina Çapuni / Ransford Parry / Ronny Zegarra / David Gil-Carton / Jorge P López-Alonso / Kristina Barragan Sanz / Letizia Brandi / Claudio O Gualerzi / Paola Fucini / Sean R Connell /
Abstract: The initiation phase is the rate-limiting step of protein synthesis (translation) and is finely regulated, making it an important drug target. In bacteria, initiation is guided by three initiation ...The initiation phase is the rate-limiting step of protein synthesis (translation) and is finely regulated, making it an important drug target. In bacteria, initiation is guided by three initiation factors and involves positioning the start site on the messenger RNA within the P-site on the small ribosomal subunit (30S), where it is decoded by the initiator tRNA. This process can be efficiently inhibited by GE81112, a natural hydrophilic, noncyclic, nonribosomal tetrapeptide. It is found in nature in three structural variants (A, B and B1 with molecular masses of 643-658 Da). Previous biochemical and structural characterisation of GE81112 indicates that the primary mechanism of action of this antibiotic is to (1) prevent the initiator tRNA from binding correctly to the P-site and (2) block conformational rearrangements in initiation factor IF3, resulting in an 30S pre/C state. In this study, using cryoEM, we have determined the binding site of GE81112 in initiation complexes (3.2-3.7Å) and on empty ribosomes (2.09 Å). This binding site is within the mRNA channel (E-site) but remote from the binding site of the initiation factors and initiator tRNA. This suggests that it acts allosterically to prevent the initiator tRNA from being locked into place. The binding mode is consistent with previous biochemical studies and recent work identifying the key pharmacophores of GE81112.
History
DepositionOct 31, 2024-
Header (metadata) releaseAug 6, 2025-
Map releaseAug 6, 2025-
UpdateAug 6, 2025-
Current statusAug 6, 2025Processing site: PDBe / Status: Released

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Structure visualization

Supplemental images

emd_51966.png

Downloads & links

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Map

FileDownload / File: emd_51966.map.gz / Format: CCP4 / Size: 216 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationComplex 2 (BODY): 30S-IF1-IF3-tRNA-GE81112 full map
Projections & slices

Image control

Size
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Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.11 Å/pix.
x 384 pix.
= 427.392 Å		1.11 Å/pix.
x 384 pix.
= 427.392 Å		1.11 Å/pix.
x 384 pix.
= 427.392 Å

Surface

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Images are generated by Spider.

Voxel sizeX=Y=Z: 1.113 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.017
Minimum - Maximum-0.040459152 - 0.12242584
Average (Standard dev.)-0.00023444316 (±0.0045101834)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions384384384
Spacing384384384
CellA=B=C: 427.39203 Å
α=β=γ: 90.0 °

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Supplemental data

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Additional map: Complex 2 (BODY): 30S-IF1-IF3-tRNA-GE81112 sharpened

Fileemd_51966_additional_1.map
AnnotationComplex 2 (BODY): 30S-IF1-IF3-tRNA-GE81112 sharpened
Projections & Slices
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Additional map: Complex 2: 30S-IF1-IF3-tRNA-GE81112 concensus map before multibody refinement...

Fileemd_51966_additional_2.map
AnnotationComplex 2: 30S-IF1-IF3-tRNA-GE81112 concensus map before multibody refinement
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Half map: Complex 2 (BODY): 30S-IF1-IF3-tRNA-GE81112 half map

Fileemd_51966_half_map_1.map
AnnotationComplex 2 (BODY): 30S-IF1-IF3-tRNA-GE81112 half map
Projections & Slices
AxesZYX

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Slices (1/2)
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Half map: Complex 2 (BODY): 30S-IF1-IF3-tRNA-GE81112 half map

Fileemd_51966_half_map_2.map
AnnotationComplex 2 (BODY): 30S-IF1-IF3-tRNA-GE81112 half map
Projections & Slices
AxesZYX

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Sample components

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Entire : Complex 2 (BODY): 30S-IF1-IF3-tRNA-GE81112

EntireName: Complex 2 (BODY): 30S-IF1-IF3-tRNA-GE81112
Components
  • Complex: Complex 2 (BODY): 30S-IF1-IF3-tRNA-GE81112
    • RNA: 16S RNA (1078-MER)
    • Protein or peptide: Small ribosomal subunit protein uS4
    • Protein or peptide: Small ribosomal subunit protein uS5
    • Protein or peptide: Small ribosomal subunit protein bS6, fully modified isoform
    • Protein or peptide: Small ribosomal subunit protein uS8
    • Protein or peptide: Small ribosomal subunit protein uS11
    • Protein or peptide: Small ribosomal subunit protein uS12
    • Protein or peptide: Small ribosomal subunit protein uS15
    • Protein or peptide: Small ribosomal subunit protein bS16
    • Protein or peptide: Small ribosomal subunit protein uS17
    • Protein or peptide: Small ribosomal subunit protein bS18
    • Protein or peptide: Small ribosomal subunit protein bS20
    • Protein or peptide: Small ribosomal subunit protein bS21
    • Protein or peptide: Translation initiation factor IF-1
    • Protein or peptide: Translation initiation factor IF-3
  • Ligand: (2S,3S)-2-[[(2S)-2-[[(2S,4S)-5-aminocarbonyloxy-4-oxidanyl-2-[[(2S,3R)-3-oxidanylpiperidin-2-yl]carbonylamino]pentanoyl]amino]-3-(1H-imidazol-4-yl)propanoyl]amino]-3-(2-chloranyl-1H-imidazol-4-yl)-3-oxidanyl-propanoic acid
  • Ligand: MAGNESIUM ION
  • Ligand: POTASSIUM ION

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Supramolecule #1: Complex 2 (BODY): 30S-IF1-IF3-tRNA-GE81112

SupramoleculeName: Complex 2 (BODY): 30S-IF1-IF3-tRNA-GE81112 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#15
Source (natural)Organism: Escherichia coli (E. coli)

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Macromolecule #1: 16S RNA (1078-MER)

MacromoleculeName: 16S RNA (1078-MER) / type: rna / ID: 1 / Number of copies: 1
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 499.52825 KDa
SequenceString: AAAUUGAAGA GUUUGAUCAU GGCUCAGAUU GAACGCUGGC GGCAGGCCUA ACACAUGCAA GUCGAACGGU AACAGGAAGA AGCUUGCUU CUUUGCUGAC GAGUGGCGGA CGGGUGAGUA AUGUCUGGGA AACUGCCUGA UGGAGGGGGA UAACUACUGG A AACGGUAG ...String:
AAAUUGAAGA GUUUGAUCAU GGCUCAGAUU GAACGCUGGC GGCAGGCCUA ACACAUGCAA GUCGAACGGU AACAGGAAGA AGCUUGCUU CUUUGCUGAC GAGUGGCGGA CGGGUGAGUA AUGUCUGGGA AACUGCCUGA UGGAGGGGGA UAACUACUGG A AACGGUAG CUAAUACCGC AUAACGUCGC AAGACCAAAG AGGGGGACCU UCGGGCCUCU UGCCAUCGGA UGUGCCCAGA UG GGAUUAG CUAGUAGGUG GGGUAACGGC UCACCUAGGC GACGAUCCCU AGCUGGUCUG AGAGGAUGAC CAGCCACACU GGA ACUGAG ACACGGUCCA GACUCCUACG GGAGGCAGCA GUGGGGAAUA UUGCACAAUG GGCGCAAGCC UGAUGCAGCC AUGC CGCGU GUAUGAAGAA GGCCUUCGGG UUGUAAAGUA CUUUCAGCGG GGAGGAAGGG AGUAAAGUUA AUACCUUUGC UCAUU GACG UUACCCGCAG AAGAAGCACC GGCUAACUCC G(PSU)GCCAGCAG CC(G7M)CGGUAAU ACGGAGGGUG CAAGCGUU A AUCGGAAUUA CUGGGCGUAA AGCGCACGCA GGCGGUUUGU UAAGUCAGAU GUGAAAUCCC CGGGCUCAAC CUGGGAACU GCAUCUGAUA CUGGCAAGCU UGAGUCUCGU AGAGGGGGGU AGAAUUCCAG GUGUAGCGGU GAAAUGCGUA GAGAUCUGGA GGAAUACCG GUGGCGAAGG CGGCCCCCUG GACGAAGACU GACGCUCAGG UGCGAAAGCG UGGGGAGCAA ACAGGAUUAG A UACCCUGG UAGUCCACGC CGUAAACGAU GUCGACUUGG AGGUUGUGCC CUUGAGGCGU GGCUUCCGGA GCUAACGCGU UA AGUCGAC CGCCUGGGGA GUACGGCCGC AAGGUUAAAA CUCAAAUGAA UUGACGGGGG CCCGCACAAG CGGUGGAGCA UGU GGUUUA AUUCGAU(2MG)(5MC)A ACGCGAAGAA CCUUACCUGG UCUUGACAUC CACGGAAGUU UUCAGAGAUG AGAAUG UGC CUUCGGGAAC CGUGAGACAG GUGCUGCAUG GCUGUCGUCA GCUCGUGUUG UGAAAUGUUG GGUUAAGUCC CGCAACG AG CGCAACCCUU AUCCUUUGUU GCCAGCGGUC CGGCCGGGAA CUCAAAGGAG ACUGCCAGUG AUAAACUGGA GGAAGGUG G GGAUGACGUC AAGUCAUCAU G(2MG)CCCUUACG ACCAGGGCUA CACACGUGCU ACAAUGGCGC AUACAAAGAG AAGCG ACCU CGCGAGAGCA AGCGGACCUC AUAAAGUGCG UCGUAGUCCG GAUUGGAGUC UGCAACUCGA CUCCAUGAAG UCGGAA UCG CUAGUAAUCG UGGAUCAGAA UGCCACGGUG AAUACGUUCC CGGCCUUGUA CACACCG(4OC)CC GU(5MC)ACACCA UGGGAGUGGG UUGCAAAAGA AGUAGGUAGC UUAACCUUCG GGAGGGCGCU UACCACUUUG UGAUUCAUGA CUGGGGUGAA GUCG(UR3)AACA AGGUAACCGU AGG(2MG)G(MA6)(MA6)CCU GCGGUUGGAU CACCUCCUUA

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Macromolecule #2: Small ribosomal subunit protein uS4

MacromoleculeName: Small ribosomal subunit protein uS4 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 23.514199 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
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

UniProtKB: Small ribosomal subunit protein uS4

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Macromolecule #3: Small ribosomal subunit protein uS5

MacromoleculeName: Small ribosomal subunit protein uS5 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 17.629398 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MAHIEKQAGE LQEKLIAVNR VSKTVKGGRI FSFTALTVVG DGNGRVGFGY GKAREVPAAI QKAMEKARRN MINVALNNGT LQHPVKGVH TGSRVFMQPA SEGTGIIAGG AMRAVLEVAG VHNVLAKAYG STNPINVVRA TIDGLENMNS PEMVAAKRGK S VEEILGK

UniProtKB: Small ribosomal subunit protein uS5

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Macromolecule #4: Small ribosomal subunit protein bS6, fully modified isoform

MacromoleculeName: Small ribosomal subunit protein bS6, fully modified isoform
type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 15.727512 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MRHYEIVFMV HPDQSEQVPG MIERYTAAIT GAEGKIHRLE DWGRRQLAYP INKLHKAHYV LMNVEAPQEV IDELETTFRF NDAVIRSMV MRTKHAVTEA SPMVKAKDER RERRDDFANE TADDAEAGDS EEEEEE

UniProtKB: Small ribosomal subunit protein bS6

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Macromolecule #5: Small ribosomal subunit protein uS8

MacromoleculeName: Small ribosomal subunit protein uS8 / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 14.146557 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MSMQDPIADM LTRIRNGQAA NKAAVTMPSS KLKVAIANVL KEEGFIEDFK VEGDTKPELE LTLKYFQGKA VVESIQRVSR PGLRIYKRK DELPKVMAGL GIAVVSTSKG VMTDRAARQA GLGGEIICYV A

UniProtKB: Small ribosomal subunit protein uS8

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Macromolecule #6: Small ribosomal subunit protein uS11

MacromoleculeName: Small ribosomal subunit protein uS11 / type: protein_or_peptide / ID: 6 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 13.870975 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MAKAPIRARK RVRKQVSDGV AHIHASFNNT IVTITDRQGN ALGWATAGGS GFRGSRKSTP FAAQVAAERC ADAVKEYGIK NLEVMVKGP GPGRESTIRA LNAAGFRITN ITDVTPIPHN GCRPPKKRRV

UniProtKB: Small ribosomal subunit protein uS11

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Macromolecule #7: Small ribosomal subunit protein uS12

MacromoleculeName: Small ribosomal subunit protein uS12 / type: protein_or_peptide / ID: 7 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 13.768157 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MATVNQLVRK PRARKVAKSN VPALEACPQK RGVCTRVYTT TPKKPNSALR KVCRVRLTNG FEVTSYIGGE GHNLQEHSVI LIRGGRVKD LPGVRYHTVR GALDCSGVKD RKQARSKYGV KRPKA

UniProtKB: Small ribosomal subunit protein uS12

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Macromolecule #8: Small ribosomal subunit protein uS15

MacromoleculeName: Small ribosomal subunit protein uS15 / type: protein_or_peptide / ID: 8 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 10.290816 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MSLSTEATAK IVSEFGRDAN DTGSTEVQVA LLTAQINHLQ GHFAEHKKDH HSRRGLLRMV SQRRKLLDYL KRKDVARYTQ LIERLGLRR

UniProtKB: Small ribosomal subunit protein uS15

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Macromolecule #9: Small ribosomal subunit protein bS16

MacromoleculeName: Small ribosomal subunit protein bS16 / type: protein_or_peptide / ID: 9 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 9.207572 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MVTIRLARHG AKKRPFYQVV VADSRNARNG RFIERVGFFN PIASEKEEGT RLDLDRIAHW VGQGATISDR VAALIKEVNK AA

UniProtKB: Small ribosomal subunit protein bS16

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Macromolecule #10: Small ribosomal subunit protein uS17

MacromoleculeName: Small ribosomal subunit protein uS17 / type: protein_or_peptide / ID: 10 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 9.724491 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MTDKIRTLQG RVVSDKMEKS IVVAIERFVK HPIYGKFIKR TTKLHVHDEN NECGIGDVVE IRECRPLSKT KSWTLVRVVE KAVL

UniProtKB: Small ribosomal subunit protein uS17

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Macromolecule #11: Small ribosomal subunit protein bS18

MacromoleculeName: Small ribosomal subunit protein bS18 / type: protein_or_peptide / ID: 11 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 9.005472 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MARYFRRRKF CRFTAEGVQE IDYKDIATLK NYITESGKIV PSRITGTRAK YQRQLARAIK RARYLSLLPY TDRHQ

UniProtKB: Small ribosomal subunit protein bS18

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Macromolecule #12: Small ribosomal subunit protein bS20

MacromoleculeName: Small ribosomal subunit protein bS20 / type: protein_or_peptide / ID: 12 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 9.708464 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MANIKSAKKR AIQSEKARKH NASRRSMMRT FIKKVYAAIE AGDKAAAQKA FNEMQPIVDR QAAKGLIHKN KAARHKANLT AQINKLA

UniProtKB: Small ribosomal subunit protein bS20

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Macromolecule #13: Small ribosomal subunit protein bS21

MacromoleculeName: Small ribosomal subunit protein bS21 / type: protein_or_peptide / ID: 13 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 8.524039 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MPVIKVRENE PFDVALRRFK RSCEKAGVLA EVRRREFYEK PTTERKRAKA SAVKRHAKKL ARENARRTRL Y

UniProtKB: Small ribosomal subunit protein bS21

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Macromolecule #14: Translation initiation factor IF-1

MacromoleculeName: Translation initiation factor IF-1 / type: protein_or_peptide / ID: 14 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 8.26259 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MAKEDNIEMQ GTVLETLPNT MFRVELENGH VVTAHISGKM RKNYIRILTG DKVTVELTPY DLSKGRIVFR SR

UniProtKB: Translation initiation factor IF-1

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Macromolecule #15: Translation initiation factor IF-3

MacromoleculeName: Translation initiation factor IF-3 / type: protein_or_peptide / ID: 15 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 20.600994 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MKGGKRVQTA RPNRINGEIR AQEVRLTGLE GEQLGIVSLR EALEKAEEAG VDLVEISPNA EPPVCRIMDY GKFLYEKSKS SKEQKKKQK VIQVKEIKFR PGTDEGDYQV KLRSLIRFLE EGDKAKITLR FRGREMAHQQ IGMEVLNRVK DDLQELAVVE S FPTKIEGR QMIMVLAPKK KQ

UniProtKB: Translation initiation factor IF-3

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Macromolecule #16: (2S,3S)-2-[[(2S)-2-[[(2S,4S)-5-aminocarbonyloxy-4-oxidanyl-2-[[(2...

MacromoleculeName: (2S,3S)-2-[[(2S)-2-[[(2S,4S)-5-aminocarbonyloxy-4-oxidanyl-2-[[(2S,3R)-3-oxidanylpiperidin-2-yl]carbonylamino]pentanoyl]amino]-3-(1H-imidazol-4-yl)propanoyl]amino]-3-(2-chloranyl-1H-imidazol-4- ...Name: (2S,3S)-2-[[(2S)-2-[[(2S,4S)-5-aminocarbonyloxy-4-oxidanyl-2-[[(2S,3R)-3-oxidanylpiperidin-2-yl]carbonylamino]pentanoyl]amino]-3-(1H-imidazol-4-yl)propanoyl]amino]-3-(2-chloranyl-1H-imidazol-4-yl)-3-oxidanyl-propanoic acid
type: ligand / ID: 16 / Number of copies: 1 / Formula: A1IC4
Molecular weightTheoretical: 644.034 Da

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Macromolecule #17: MAGNESIUM ION

MacromoleculeName: MAGNESIUM ION / type: ligand / ID: 17 / Number of copies: 91 / Formula: MG
Molecular weightTheoretical: 24.305 Da

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Macromolecule #18: POTASSIUM ION

MacromoleculeName: POTASSIUM ION / type: ligand / ID: 18 / Number of copies: 4 / Formula: K
Molecular weightTheoretical: 39.098 Da

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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: 7.7
GridModel: Quantifoil R2/2 / Pretreatment - Type: GLOW DISCHARGE
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: FEI FALCON III (4k x 4k) / Average electron dose: 44.08 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: SPOT SCAN / Imaging mode: BRIGHT FIELD / Nominal defocus max: 3.25 µm / Nominal defocus min: 0.5 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionSoftware: (Name: CTFFIND, RELION) / Type: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: NONE
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION / Number images used: 34701
Initial angle assignmentType: RANDOM ASSIGNMENT / Software - Name: RELION
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION
Final 3D classificationSoftware - Name: RELION
FSC plot (resolution estimation)

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Atomic model buiding 1

RefinementProtocol: RIGID BODY FIT
Output model

PDB-9h9j:
Complex 2 (BODY) 30S-IF1-IF3-tRNA-GE81112

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