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- EMDB-0643: 30S initiation complex -

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Basic information

Entry
Database: EMDB / ID: EMD-0643
Title30S initiation complex
Map data30S IC
Sample
  • Complex: 70S elongation competent ribosome
    • Protein or peptide: x 22 types
    • RNA: x 3 types
Function / homology
Function and homology information


translation initiation factor activity / small ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / cytoplasmic translation / small ribosomal subunit / tRNA binding / rRNA binding / ribosome / structural constituent of ribosome / ribonucleoprotein complex ...translation initiation factor activity / small ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / cytoplasmic translation / small ribosomal subunit / tRNA binding / rRNA binding / ribosome / structural constituent of ribosome / ribonucleoprotein complex / translation / mRNA binding / GTPase activity / GTP binding / cytosol / cytoplasm
Similarity search - Function
Initiation factor 2 associated domain, bacterial / Bacterial translation initiation factor IF-2 associated region / Translation initiation factor IF-2, N-terminal / Translation initiation factor IF-2, N-terminal region / Translation initiation factor IF-2, domain II / Initiation factor 2 signature. / Translation initiation factor IF-2, bacterial-like / Translation initiation factor IF- 2, domain 3 / Translation-initiation factor 2 / Translation initiation factor IF- 2 ...Initiation factor 2 associated domain, bacterial / Bacterial translation initiation factor IF-2 associated region / Translation initiation factor IF-2, N-terminal / Translation initiation factor IF-2, N-terminal region / Translation initiation factor IF-2, domain II / Initiation factor 2 signature. / Translation initiation factor IF-2, bacterial-like / Translation initiation factor IF- 2, domain 3 / Translation-initiation factor 2 / Translation initiation factor IF- 2 / Translation initiation factor IF-2, domain 3 superfamily / Putative DNA-binding domain superfamily / Ribosomal protein S21, conserved site / Ribosomal protein S21 signature. / Ribosomal protein S14, bacterial/plastid / Ribosomal protein S21 superfamily / Ribosomal protein S21 / Ribosomal protein S16, conserved site / Ribosomal protein S16 signature. / Translational (tr)-type GTP-binding domain / Elongation factor Tu GTP binding domain / Translational (tr)-type guanine nucleotide-binding (G) domain profile. / Ribosomal protein S21 / 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
Similarity search - Domain/homology
Translation initiation factor IF-2 / Small ribosomal subunit protein uS17 / Small ribosomal subunit protein uS14 / 30S ribosomal protein S21 / Small ribosomal subunit protein uS13 / 30S ribosomal protein S3 / 30S ribosomal protein S5 / Small ribosomal subunit protein bS16 / 30S ribosomal protein S10 / Small ribosomal subunit protein uS15 ...Translation initiation factor IF-2 / Small ribosomal subunit protein uS17 / Small ribosomal subunit protein uS14 / 30S ribosomal protein S21 / Small ribosomal subunit protein uS13 / 30S ribosomal protein S3 / 30S ribosomal protein S5 / Small ribosomal subunit protein bS16 / 30S ribosomal protein S10 / Small ribosomal subunit protein uS15 / Small ribosomal subunit protein uS8 / 30S ribosomal protein S19 / 30S ribosomal protein S18 / 30S ribosomal protein S4 / Small ribosomal subunit protein uS11 / 30S ribosomal protein S6 / 30S ribosomal protein S7 / 30S ribosomal protein S20 / 30S ribosomal protein S9 / Small ribosomal subunit protein uS2 / 30S ribosomal protein S12
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
Methodsingle particle reconstruction / cryo EM / Resolution: 4.2 Å
AuthorsFrank J / Gonzalez Jr RL / kaledhonkar S / Fu Z / Caban K / Li W / Chen B / Sun M
Funding support United States, 4 items
OrganizationGrant numberCountry
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)R01 GM29169 United States
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)R01 GM 084288 United States
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)R01 GM55440 United States
American Cancer Society125201 United States
CitationJournal: Nature / Year: 2019
Title: Late steps in bacterial translation initiation visualized using time-resolved cryo-EM.
Authors: Sandip Kaledhonkar / Ziao Fu / Kelvin Caban / Wen Li / Bo Chen / Ming Sun / Ruben L Gonzalez / Joachim Frank /
Abstract: The initiation of bacterial translation involves the tightly regulated joining of the 50S ribosomal subunit to an initiator transfer RNA (fMet-tRNA)-containing 30S ribosomal initiation complex to ...The initiation of bacterial translation involves the tightly regulated joining of the 50S ribosomal subunit to an initiator transfer RNA (fMet-tRNA)-containing 30S ribosomal initiation complex to form a 70S initiation complex, which subsequently matures into a 70S elongation-competent complex. Rapid and accurate formation of the 70S initiation complex is promoted by initiation factors, which must dissociate from the 30S initiation complex before the resulting 70S elongation-competent complex can begin the elongation of translation. Although comparisons of the structures of the 30S and 70S initiation complexes have revealed that the ribosome, initiation factors and fMet-tRNA can acquire different conformations in these complexes, the timing of conformational changes during formation of the 70S initiation complex, the structures of any intermediates formed during these rearrangements, and the contributions that these dynamics might make to the mechanism and regulation of initiation remain unknown. Moreover, the absence of a structure of the 70S elongation-competent complex formed via an initiation-factor-catalysed reaction has precluded an understanding of the rearrangements to the ribosome, initiation factors and fMet-tRNA that occur during maturation of a 70S initiation complex into a 70S elongation-competent complex. Here, using time-resolved cryogenic electron microscopy, we report the near-atomic-resolution view of how a time-ordered series of conformational changes drive and regulate subunit joining, initiation factor dissociation and fMet-tRNA positioning during formation of the 70S elongation-competent complex. Our results demonstrate the power of time-resolved cryogenic electron microscopy to determine how a time-ordered series of conformational changes contribute to the mechanism and regulation of one of the most fundamental processes in biology.
History
DepositionMar 8, 2019-
Header (metadata) releaseMay 29, 2019-
Map releaseMay 29, 2019-
UpdateJan 29, 2020-
Current statusJan 29, 2020Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.04
  • Imaged by UCSF Chimera
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  • Surface view colored by height
  • Surface level: 0.04
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-6o7k
  • Surface level: 0.04
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_0643.png

Downloads & links

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Map

FileDownload / File: emd_0643.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotation30S IC
Voxel sizeX=Y=Z: 1.66 Å
Density
Contour LevelBy AUTHOR: 0.03 / Movie #1: 0.04
Minimum - Maximum-0.067953154 - 0.23054652
Average (Standard dev.)0.0008448038 (±0.008188761)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 424.96 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.661.661.66
M x/y/z256256256
origin x/y/z0.0000.0000.000
length x/y/z424.960424.960424.960
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS256256256
D min/max/mean-0.0680.2310.001

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Supplemental data

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Sample components

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Entire : 70S elongation competent ribosome

EntireName: 70S elongation competent ribosome
Components
  • Complex: 70S elongation competent ribosome
    • Protein or peptide: Translation initiation factor IF-1
    • Protein or peptide: Translation initiation factor IF-2
    • RNA: 16S ribosomal RNA
    • Protein or peptide: 30S ribosomal protein S17
    • 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 S18
    • Protein or peptide: 30S ribosomal protein S19
    • Protein or peptide: 30S ribosomal protein S2
    • Protein or peptide: 30S ribosomal protein S20
    • Protein or peptide: 30S ribosomal protein S21
    • 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
    • RNA: tRNATransfer RNA
    • RNA: mRNAMessenger RNA

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Supramolecule #1: 70S elongation competent ribosome

SupramoleculeName: 70S elongation competent ribosome / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#25
Source (natural)Organism: Escherichia coli (E. coli)

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Macromolecule #1: Translation initiation factor IF-1

MacromoleculeName: Translation initiation factor IF-1 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 8.116468 KDa
SequenceString:
AKEKDTIRTE GVVTEALPNA TFRVKLDSGP EILAYISGKM RMHYIRILPG DRVVVEITPY DPTRGRIVYR K

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Macromolecule #2: Translation initiation factor IF-2

MacromoleculeName: Translation initiation factor IF-2 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 54.866508 KDa
SequenceString: DTGAAAEPRA PVVTIMGHVD HGKTSLLDYI RSTKVASGEA GGITQHIGAY HVETENGMIT FLDTPGHAAF TSMRARGAQA TDIVVLVVA ADDGVMPQTI EAIQHAKAAQ VPVVVAVNKI DKPEADPDRV KNELSQYGIL PEEWGGESQF VHVSAKAGTG I DELLDAIL ...String:
DTGAAAEPRA PVVTIMGHVD HGKTSLLDYI RSTKVASGEA GGITQHIGAY HVETENGMIT FLDTPGHAAF TSMRARGAQA TDIVVLVVA ADDGVMPQTI EAIQHAKAAQ VPVVVAVNKI DKPEADPDRV KNELSQYGIL PEEWGGESQF VHVSAKAGTG I DELLDAIL LQAEVLELKA VRKGMASGAV IESFLDKGRG PVATVLVREG TLHKGDIVLC GFEYGRVRAM RNELGQEVLE AG PSIPVEI LGLSGVPAAG DEVTVVRDEK KAREVALYRQ GKFREVKLAR QQKSKLENMF ANMTEGEVHE VNIVLKADVQ GSV EAISDS LLKLSTDEVK VKIIGSGVGG ITETDATLAA ASNAILVGFN VRADASARKV IEAESLDLRY YSVIYNLIDE VKAA MSGML SPELKQQIIG LAEVRDVFKS PKFGAIAGCM VTEGVVKRHN PIRVLRDNVV IYEGELESLR RFKDDVNEVR NGMEC GIGV KNYNDVRTGD VIEVFEIIEI QRTIA

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Macromolecule #4: 30S ribosomal protein S17

MacromoleculeName: 30S ribosomal protein S17 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 9.263946 KDa
SequenceString:
KIRTLQGRVV SDKMEKSIVV AIERFVKHPI YGKFIKRTTK LHVHDENNEC GIGDVVEIRE CRPLSKTKSW TLVRVVEKAV

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Macromolecule #5: 30S ribosomal protein S10

MacromoleculeName: 30S ribosomal protein S10 / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 11.196988 KDa
SequenceString:
RIRIRLKAFD HRLIDQATAE IVETAKRTGA QVRGPIPLPT RKERFTVLIS PHVNKDARDQ YEIRTHLRLV DIVEPTEKTV DALMRLDLA AGVDVQISL

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Macromolecule #6: 30S ribosomal protein S11

MacromoleculeName: 30S ribosomal protein S11 / type: protein_or_peptide / ID: 6 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 12.4872 KDa
SequenceString:
RKQVSDGVAH IHASFNNTIV TITDRQGNAL GWATAGGSGF RGSRKSTPFA AQVAAERCAD AVKEYGIKNL EVMVKGPGPG RESTIRALN AAGFRITNIT DVTPIPHNGC RPPKKRRV

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Macromolecule #7: 30S ribosomal protein S12

MacromoleculeName: 30S ribosomal protein S12 / type: protein_or_peptide / ID: 7 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 13.636961 KDa
SequenceString:
ATVNQLVRKP RARKVAKSNV PALEACPQKR GVCTRVYTTT PKKPNSALRK VCRVRLTNGF EVTSYIGGEG HNLQEHSVIL IRGGRVKDL PGVRYHTVRG ALDCSGVKDR KQARSKYGVK RPKA

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Macromolecule #8: 30S ribosomal protein S13

MacromoleculeName: 30S ribosomal protein S13 / type: protein_or_peptide / ID: 8 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 12.625753 KDa
SequenceString:
ARIAGINIPD HKHAVIALTS IYGVGKTRSK AILAAAGIAE DVKISELSEG QIDTLRDEVA KFVVEGDLRR EISMSIKRLM DLGCYRGLR HRRGLPVRGQ RTKTNARTRK GPRKP

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Macromolecule #9: 30S ribosomal protein S14

MacromoleculeName: 30S ribosomal protein S14 / type: protein_or_peptide / ID: 9 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 11.48939 KDa
SequenceString:
AKQSMKAREV KRVALADKYF AKRAELKAII SDVNASDEER WNAVLKLQTL PRDSSPSRQR NRCRQTGRPH GFLRKFGLSR IKVREAAMR GEIPGLKKAS W

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Macromolecule #10: 30S ribosomal protein S15

MacromoleculeName: 30S ribosomal protein S15 / type: protein_or_peptide / ID: 10 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 10.159621 KDa
SequenceString:
SLSTEATAKI VSEFGRDAND TGSTEVQVAL LTAQINHLQG HFAEHKKDHH SRRGLLRMVS QRRKLLDYLK RKDVARYTQL IERLGLRR

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Macromolecule #11: 30S ribosomal protein S16

MacromoleculeName: 30S ribosomal protein S16 / type: protein_or_peptide / ID: 11 / 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 #12: 30S ribosomal protein S18

MacromoleculeName: 30S ribosomal protein S18 / type: protein_or_peptide / ID: 12 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 6.466477 KDa
SequenceString:
EIDYKDIATL KNYITESGKI VPSRITGTRA KYQRQLARAI KRARYLSLLP YTDRH

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Macromolecule #13: 30S ribosomal protein S19

MacromoleculeName: 30S ribosomal protein S19 / type: protein_or_peptide / ID: 13 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 9.057626 KDa
SequenceString:
RSLKKGPFID LHLLKKVEKA VESGDKKPLR TWSRRSTIFP NMIGLTIAVH NGRQHVPVFV TDEMVGHKLG EFAPTRTYR

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Macromolecule #14: 30S ribosomal protein S2

MacromoleculeName: 30S ribosomal protein S2 / type: protein_or_peptide / ID: 14 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 24.253943 KDa
SequenceString: MLKAGVHFGH QTRYWNPKMK PFIFGARNKV HIINLEKTVP MFNEALAELN KIASRKGKIL FVGTKRAASE AVKDAALSCD QFFVNHRWL GGMLTNWKTV RQSIKRLKDL ETQSQDGTFD KLTKKEALMR TRELEKLENS LGGIKDMGGL PDALFVIDAD H EHIAIKEA ...String:
MLKAGVHFGH QTRYWNPKMK PFIFGARNKV HIINLEKTVP MFNEALAELN KIASRKGKIL FVGTKRAASE AVKDAALSCD QFFVNHRWL GGMLTNWKTV RQSIKRLKDL ETQSQDGTFD KLTKKEALMR TRELEKLENS LGGIKDMGGL PDALFVIDAD H EHIAIKEA NNLGIPVFAI VDTNSDPDGV DFVIPGNDDA IRAVTLYLGA VAATVREGRS

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Macromolecule #15: 30S ribosomal protein S20

MacromoleculeName: 30S ribosomal protein S20 / type: protein_or_peptide / ID: 15 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 9.50619 KDa
SequenceString:
NIKSAKKRAI QSEKARKHNA SRRSMMRTFI KKVYAAIEAG DKAAAQKAFN EMQPIVDRQA AKGLIHKNKA ARHKANLTAQ INKLA

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Macromolecule #16: 30S ribosomal protein S21

MacromoleculeName: 30S ribosomal protein S21 / type: protein_or_peptide / ID: 16 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 6.067081 KDa
SequenceString:
IKVRENEPFD VALRRFKRSC EKAGVLAEVR RREFYEKPTT ERKRAKASAV K

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Macromolecule #17: 30S ribosomal protein S3

MacromoleculeName: 30S ribosomal protein S3 / type: protein_or_peptide / ID: 17 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 23.078785 KDa
SequenceString: GQKVHPNGIR LGIVKPWNST WFANTKEFAD NLDSDFKVRQ YLTKELAKAS VSRIVIERPA KSIRVTIHTA RPGIVIGKKG EDVEKLRKV VADIAGVPAQ INIAEVRKPE LDAKLVADSI TSQLERRVMF RRAMKRAVQN AMRLGAKGIK VEVSGRLGGA E IARTEWYR ...String:
GQKVHPNGIR LGIVKPWNST WFANTKEFAD NLDSDFKVRQ YLTKELAKAS VSRIVIERPA KSIRVTIHTA RPGIVIGKKG EDVEKLRKV VADIAGVPAQ INIAEVRKPE LDAKLVADSI TSQLERRVMF RRAMKRAVQN AMRLGAKGIK VEVSGRLGGA E IARTEWYR EGRVPLHTLR ADIDYNTSEA HTTYGVIGVK VWIFKGEI

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Macromolecule #18: 30S ribosomal protein S4

MacromoleculeName: 30S ribosomal protein S4 / type: protein_or_peptide / ID: 18 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 23.383002 KDa
SequenceString: ARYLGPKLKL SRREGTDLFL KSGVRAIDTK CKIEQAPGQH GARKPRLSDY GVQLREKQKV RRIYGVLERQ FRNYYKEAAR LKGNTGENL LALLEGRLDN VVYRMGFGAT RAEARQLVSH KAIMVNGRVV NIASYQVSPN DVVSIREKAK KQSRVKAALE L AEQREKPT ...String:
ARYLGPKLKL SRREGTDLFL KSGVRAIDTK CKIEQAPGQH GARKPRLSDY GVQLREKQKV RRIYGVLERQ FRNYYKEAAR LKGNTGENL LALLEGRLDN VVYRMGFGAT RAEARQLVSH KAIMVNGRVV NIASYQVSPN DVVSIREKAK KQSRVKAALE L AEQREKPT WLEVDAGKME GTFKRKPERS DLSADINEHL IVELYSK

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Macromolecule #19: 30S ribosomal protein S5

MacromoleculeName: 30S ribosomal protein S5 / type: protein_or_peptide / ID: 19 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 15.804282 KDa
SequenceString:
ELQEKLIAVN RVSKTVKGGR IFSFTALTVV GDGNGRVGFG YGKAREVPAA IQKAMEKARR NMINVALNNG TLQHPVKGVH TGSRVFMQP ASEGTGIIAG GAMRAVLEVA GVHNVLAKAY GSTNPINVVR ATIDGLENMN SPEMVAAKRG K

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Macromolecule #20: 30S ribosomal protein S6

MacromoleculeName: 30S ribosomal protein S6 / type: protein_or_peptide / ID: 20 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 11.669371 KDa
SequenceString:
MRHYEIVFMV HPDQSEQVPG MIERYTAAIT GAEGKIHRLE DWGRRQLAYP INKLHKAHYV LMNVEAPQEV IDELETTFRF NDAVIRSMV MRTKHAVTEA S

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Macromolecule #21: 30S ribosomal protein S7

MacromoleculeName: 30S ribosomal protein S7 / type: protein_or_peptide / ID: 21 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 16.861523 KDa
SequenceString:
PRRRVIGQRK ILPDPKFGSE LLAKFVNILM VDGKKSTAES IVYSALETLA QRSGKSELEA FEVALENVRP TVEVKSRRVG GSTYQVPVE VRPVRRNALA MRWIVEAARK RGDKSMALRL ANELSDAAEN KGTAVKKRED VHRMAEANKA FA

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Macromolecule #22: 30S ribosomal protein S8

MacromoleculeName: 30S ribosomal protein S8 / type: protein_or_peptide / ID: 22 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 14.015361 KDa
SequenceString:
SMQDPIADML TRIRNGQAAN KAAVTMPSSK LKVAIANVLK EEGFIEDFKV EGDTKPELEL TLKYFQGKAV VESIQRVSRP GLRIYKRKD ELPKVMAGLG IAVVSTSKGV MTDRAARQAG LGGEIICYVA

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Macromolecule #23: 30S ribosomal protein S9

MacromoleculeName: 30S ribosomal protein S9 / type: protein_or_peptide / ID: 23 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 14.554882 KDa
SequenceString:
NQYYGTGRRK SSAARVFIKP GNGKIVINQR SLEQYFGRET ARMVVRQPLE LVDMVEKLDL YITVKGGGIS GQAGAIRHGI TRALMEYDE SLRSELRKAG FVTRDARQVE RKKVGLRKAR RRPQFSKR

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Macromolecule #3: 16S ribosomal RNA

MacromoleculeName: 16S ribosomal RNA / type: rna / ID: 3 / Number of copies: 1
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 498.725406 KDa
SequenceString: AAUUGAAGAG UUUGAUCAUG GCUCAGAUUG AACGCUGGCG GCAGGCCUAA CACAUGCAAG UCGAACGGUA ACAGGAAGAA GCUUGCUUC UUUGCUGACG AGUGGCGGAC GGGUGAGUAA UGUCUGGGAA ACUGCCUGAU GGAGGGGGAU AACUACUGGA A ACGGUAGC ...String:
AAUUGAAGAG UUUGAUCAUG GCUCAGAUUG AACGCUGGCG GCAGGCCUAA CACAUGCAAG UCGAACGGUA ACAGGAAGAA GCUUGCUUC UUUGCUGACG AGUGGCGGAC GGGUGAGUAA UGUCUGGGAA ACUGCCUGAU GGAGGGGGAU AACUACUGGA A ACGGUAGC UAAUACCGCA UAACGUCGCA AGACCAAAGA GGGGGACCUU CGGGCCUCUU GCCAUCGGAU GUGCCCAGAU GG GAUUAGC UAGUAGGUGG GGUAACGGCU CACCUAGGCG ACGAUCCCUA GCUGGUCUGA GAGGAUGACC AGCCACACUG GAA CUGAGA CACGGUCCAG ACUCCUACGG GAGGCAGCAG UGGGGAAUAU UGCACAAUGG GCGCAAGCCU GAUGCAGCCA UGCC GCGUG UAUGAAGAAG GCCUUCGGGU UGUAAAGUAC UUUCAGCGGG GAGGAAGGGA GUAAAGUUAA UACCUUUGCU CAUUG ACGU UACCCGCAGA AGAAGCACCG GCUAACUCCG UGCCAGCAGC CGCGGUAAUA CGGAGGGUGC AAGCGUUAAU CGGAAU UAC UGGGCGUAAA GCGCACGCAG GCGGUUUGUU AAGUCAGAUG UGAAAUCCCC GGGCUCAACC UGGGAACUGC AUCUGAU AC UGGCAAGCUU GAGUCUCGUA GAGGGGGGUA GAAUUCCAGG UGUAGCGGUG AAAUGCGUAG AGAUCUGGAG GAAUACCG G UGGCGAAGGC GGCCCCCUGG ACGAAGACUG ACGCUCAGGU GCGAAAGCGU GGGGAGCAAA CAGGAUUAGA UACCCUGGU AGUCCACGCC GUAAACGAUG UCGACUUGGA GGUUGUGCCC UUGAGGCGUG GCUUCCGGAG CUAACGCGUU AAGUCGACCG CCUGGGGAG UACGGCCGCA AGGUUAAAAC UCAAAUGAAU UGACGGGGGC CCGCACAAGC GGUGGAGCAU GUGGUUUAAU U CGAUGCAA CGCGAAGAAC CUUACCUGGU CUUGACAUCC ACGGAAGUUU UCAGAGAUGA GAAUGUGCCU UCGGGAACCG UG AGACAGG UGCUGCAUGG CUGUCGUCAG CUCGUGUUGU GAAAUGUUGG GUUAAGUCCC GCAACGAGCG CAACCCUUAU CCU UUGUUG CCAGCGGUCC GGCCGGGAAC UCAAAGGAGA CUGCCAGUGA UAAACUGGAG GAAGGUGGGG AUGACGUCAA GUCA UCAUG GCCCUUACGA CCAGGGCUAC ACACGUGCUA CAAUGGCGCA UACAAAGAGA AGCGACCUCG CGAGAGCAAG CGGAC CUCA UAAAGUGCGU CGUAGUCCGG AUUGGAGUCU GCAACUCGAC UCCAUGAAGU CGGAAUCGCU AGUAAUCGUG GAUCAG AAU GCCACGGUGA AUACGUUCCC GGGCCUUGUA CACACCGCCC GUCACACCAU GGGAGUGGGU UGCAAAAGAA GUAGGUA GC UUAACCUUCG GGAGGGCGCU UACCACUUUG UGAUUCAUGA CUGGGGUGAA GUCGUAACAA GGUAACCGUA GGGGAACC U GCGGUUGGAU CACCUCCU

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Macromolecule #24: tRNA

MacromoleculeName: tRNA / type: rna / ID: 24 / Number of copies: 1
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 24.786785 KDa
SequenceString:
CGCGGGGUGG AGCAGCCUGG UAGCUCGUCG GGCUCAUAAC CCGAAGAUCG UCGGUUCAAA UCCGGCCCCC GCAACCA

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Macromolecule #25: mRNA

MacromoleculeName: mRNA / type: rna / ID: 25 / Number of copies: 1
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 1.900198 KDa
SequenceString:
AAUAUG

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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
GridDetails: unspecified
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TECNAI F30
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: OTHER / Imaging mode: DARK FIELD
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 35.0 e/Å2
Experimental equipment
Model: Tecnai F30 / Image courtesy: FEI Company

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Image processing

Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 4.2 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 86367
FSC plot (resolution estimation)

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Atomic model buiding 1

Initial modelPDB ID:

2avy
PDB Unreleased entry

RefinementSpace: REAL / Protocol: FLEXIBLE FIT
Output model

PDB-6o7k:
30S initiation complex

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