4V6L | pdb_00004v6l

Structural insights into cognate vs. near-cognate discrimination during decoding.


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 13.2 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Starting Models: experimental
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wwPDB Validation 3D Report Full Report

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This is version 3.4 of the entry. See complete history

Literature

Structural insights into cognate versus near-cognate discrimination during decoding.

Agirrezabala, X.Schreiner, E.Trabuco, L.G.Lei, J.Ortiz-Meoz, R.F.Schulten, K.Green, R.Frank, J.

(2011) EMBO J 30: 1497-1507

  • DOI: https://doi.org/10.1038/emboj.2011.58
  • Primary Citation Related Structures: 
    4V6K, 4V6L

  • PubMed Abstract: 

    The structural basis of the tRNA selection process is investigated by cryo-electron microscopy of ribosomes programmed with UGA codons and incubated with ternary complex (TC) containing the near-cognate Trp-tRNA(Trp) in the presence of kirromycin. Going through more than 350 000 images and employing image classification procedures, we find ∼8% in which the TC is bound to the ribosome. The reconstructed 3D map provides a means to characterize the arrangement of the near-cognate aa-tRNA with respect to elongation factor Tu (EF-Tu) and the ribosome, as well as the domain movements of the ribosome. One of the interesting findings is that near-cognate tRNA's acceptor stem region is flexible and CCA end becomes disordered. The data bring direct structural insights into the induced-fit mechanism of decoding by the ribosome, as the analysis of the interactions between small and large ribosomal subunit, aa-tRNA and EF-Tu and comparison with the cognate case (UGG codon) offers clues on how the conformational signals conveyed to the GTPase differ in the two cases.


  • Organizational Affiliation
    • Structural Biology Unit, CIC-bioGUNE, Derio, Basque Country, Spain.

Macromolecule Content 

  • Total Structure Weight: 2,280.36 kDa 
  • Atom Count: 153,634 
  • Modeled Residue Count: 11,394 
  • Deposited Residue Count: 11,424 
  • Unique protein chains: 52
  • Unique nucleic acid chains: 5

Macromolecules


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Entity ID: 3
MoleculeChains  Sequence LengthOrganismDetailsImage
Elongation factor Tu 2C [auth AC]393Escherichia coli K-12Mutation(s): 0 
EC: 3.6.5.3
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Entity ID: 5
MoleculeChains  Sequence LengthOrganismDetailsImage
30S ribosomal protein S2F [auth AF]241Escherichia coli K-12Mutation(s): 0 
UniProt
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Entity ID: 6
MoleculeChains  Sequence LengthOrganismDetailsImage
30S ribosomal protein S3G [auth AG]233Escherichia coli K-12Mutation(s): 0 
UniProt
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UniProt GroupP0A7V3
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Entity ID: 7
MoleculeChains  Sequence LengthOrganismDetailsImage
30S ribosomal protein S4H [auth AH]206Escherichia coli K-12Mutation(s): 0 
UniProt
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UniProt GroupP0A7V8
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Entity ID: 8
MoleculeChains  Sequence LengthOrganismDetailsImage
30S ribosomal protein S5I [auth AI]167Escherichia coli K-12Mutation(s): 0 
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Entity ID: 9
MoleculeChains  Sequence LengthOrganismDetailsImage
30S ribosomal protein S6J [auth AJ]135Escherichia coli K-12Mutation(s): 0 
UniProt
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Entity ID: 10
MoleculeChains  Sequence LengthOrganismDetailsImage
30S ribosomal protein S7K [auth AK]179Escherichia coli K-12Mutation(s): 0 
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Entity ID: 11
MoleculeChains  Sequence LengthOrganismDetailsImage
30S ribosomal protein S8L [auth AL]130Escherichia coli K-12Mutation(s): 0 
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Entity ID: 12
MoleculeChains  Sequence LengthOrganismDetailsImage
30S ribosomal protein S9M [auth AM]130Escherichia coli K-12Mutation(s): 0 
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Entity ID: 13
MoleculeChains  Sequence LengthOrganismDetailsImage
30S ribosomal protein S10N [auth AN]103Escherichia coli K-12Mutation(s): 0 
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Entity ID: 14
MoleculeChains  Sequence LengthOrganismDetailsImage
30S ribosomal protein S11O [auth AO]129Escherichia coli K-12Mutation(s): 0 
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Entity ID: 15
MoleculeChains  Sequence LengthOrganismDetailsImage
30S ribosomal protein S12P [auth AP]124Escherichia coli K-12Mutation(s): 0 
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Entity ID: 16
MoleculeChains  Sequence LengthOrganismDetailsImage
30S ribosomal protein S13Q [auth AQ]118Escherichia coli K-12Mutation(s): 0 
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Entity ID: 17
MoleculeChains  Sequence LengthOrganismDetailsImage
30S ribosomal protein S14R [auth AR]101Escherichia coli K-12Mutation(s): 0 
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Entity ID: 18
MoleculeChains  Sequence LengthOrganismDetailsImage
30S ribosomal protein S15S [auth AS]89Escherichia coli O157:H7Mutation(s): 0 
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Entity ID: 19
MoleculeChains  Sequence LengthOrganismDetailsImage
30S ribosomal protein S16T [auth AT]82Escherichia coli K-12Mutation(s): 0 
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Entity ID: 20
MoleculeChains  Sequence LengthOrganismDetailsImage
30S ribosomal protein S17U [auth AU]84Escherichia coli K-12Mutation(s): 0 
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Entity ID: 21
MoleculeChains  Sequence LengthOrganismDetailsImage
30S ribosomal protein S18V [auth AV]75Escherichia coli K-12Mutation(s): 0 
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Entity ID: 22
MoleculeChains  Sequence LengthOrganismDetailsImage
30S ribosomal protein S19W [auth AW]92Escherichia coli K-12Mutation(s): 0 
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Entity ID: 23
MoleculeChains  Sequence LengthOrganismDetailsImage
30S ribosomal protein S20X [auth AX]87Escherichia coli K-12Mutation(s): 0 
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Entity ID: 24
MoleculeChains  Sequence LengthOrganismDetailsImage
30S ribosomal protein S21Y [auth AY]71Escherichia coli K-12Mutation(s): 0 
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Entity ID: 27
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L1BA [auth BC]234Escherichia coli K-12Mutation(s): 0 
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Entity ID: 28
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L2CA [auth BD]273Escherichia coli K-12Mutation(s): 0 
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Entity ID: 29
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L3DA [auth BE]209Escherichia coli K-12Mutation(s): 0 
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Entity ID: 30
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L4EA [auth BF]201Escherichia coli K-12Mutation(s): 0 
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Entity ID: 31
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L5FA [auth BG]179Escherichia coli K-12Mutation(s): 0 
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Entity ID: 32
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L6GA [auth BH]177Escherichia coli K-12Mutation(s): 0 
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Entity ID: 33
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L9HA [auth BI]149Escherichia coli K-12Mutation(s): 0 
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Entity ID: 34
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L11IA [auth BJ]142Escherichia coli K-12Mutation(s): 0 
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Entity ID: 35
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L13JA [auth BK]142Escherichia coli K-12Mutation(s): 0 
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Entity ID: 36
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L14KA [auth BL]123Escherichia coli K-12Mutation(s): 0 
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Entity ID: 37
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L15LA [auth BM]144Escherichia coli K-12Mutation(s): 0 
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Entity ID: 38
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L16MA [auth BN]136Escherichia coli K-12Mutation(s): 0 
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Entity ID: 39
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L17NA [auth BO]127Escherichia coli K-12Mutation(s): 0 
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Entity ID: 40
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L18OA [auth BP]117Escherichia coli K-12Mutation(s): 0 
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Entity ID: 41
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L19PA [auth BQ]115Escherichia coli K-12Mutation(s): 0 
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Entity ID: 42
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L20QA [auth BR]118Escherichia coli K-12Mutation(s): 0 
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Entity ID: 43
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L21RA [auth BS]103Escherichia coli K-12Mutation(s): 0 
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Entity ID: 44
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L22SA [auth BT]110Escherichia coli K-12Mutation(s): 0 
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Entity ID: 45
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L23TA [auth BU]100Escherichia coli K-12Mutation(s): 0 
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Entity ID: 46
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L24UA [auth BV]104Escherichia coli K-12Mutation(s): 0 
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Entity ID: 47
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L25VA [auth BW]94Escherichia coli K-12Mutation(s): 0 
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Entity ID: 48
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L27WA [auth BX]85Escherichia coli K-12Mutation(s): 0 
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Entity ID: 49
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L28XA [auth BY]78Escherichia coli K-12Mutation(s): 0 
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Entity ID: 50
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L29YA [auth BZ]63Escherichia coli K-12Mutation(s): 0 
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Entity ID: 51
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L30ZA [auth Ba]59Escherichia coli K-12Mutation(s): 0 
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Entity ID: 52
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L31AB [auth Bb]70Escherichia coli K-12Mutation(s): 0 
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Entity ID: 53
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L32BB [auth Bc]57Escherichia coli K-12Mutation(s): 0 
UniProt
Find proteins for P0A7N4 (Escherichia coli (strain K12))
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Entity ID: 54
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L33CB [auth Bd]55Escherichia coli K-12Mutation(s): 0 
UniProt
Find proteins for P0A7N9 (Escherichia coli (strain K12))
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Entity ID: 55
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L34DB [auth Be]46Escherichia coli K-12Mutation(s): 0 
UniProt
Find proteins for P0A7P5 (Escherichia coli (strain K12))
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Entity ID: 56
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L35EB [auth Bf]65Escherichia coli K-12Mutation(s): 0 
UniProt
Find proteins for P0A7Q1 (Escherichia coli (strain K12))
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Entity ID: 57
MoleculeChains  Sequence LengthOrganismDetailsImage
50S ribosomal protein L36FB [auth Bg]38Escherichia coli K-12Mutation(s): 0 
UniProt
Find proteins for P0A7Q6 (Escherichia coli (strain K12))
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Entity ID: 1
MoleculeChains LengthOrganismImage
16S ribosomal RNAA [auth AA]1,542Escherichia coli DH1
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Entity ID: 2
MoleculeChains LengthOrganismImage
A/T-site tRNA PheB [auth AB],
E [auth AE]
76Escherichia coli DH1
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Entity ID: 4
MoleculeChains LengthOrganismImage
mRNAD [auth AD]24Escherichia coli
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Entity ID: 25
MoleculeChains LengthOrganismImage
50S ribosomal RNA 5SZ [auth BA]120Escherichia coli K-12
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Entity ID: 26
MoleculeChains LengthOrganismImage
50S ribosomal RNA 23SAA [auth BB]2,904Escherichia coli K-12
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Reference Sequence

Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 13.2 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONSPIDER2.7

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-07-09
    Type: Initial release
  • Version 1.1: 2014-12-10
    Changes: Other
  • Version 1.2: 2015-03-25
    Changes: Other
  • Version 2.0: 2018-07-18
    Changes: Data collection, Polymer sequence
  • Version 3.0: 2019-07-03
    Changes: Data collection, Derived calculations, Non-polymer description, Structure summary
  • Version 3.1: 2019-12-18
    Changes: Other
  • Version 3.2: 2024-02-28
    Changes: Data collection, Database references, Derived calculations, Refinement description, Structure summary
  • Version 3.3: 2025-02-19
    Changes: Data collection, Structure summary
  • Version 3.4: 2025-03-19
    Changes: Data collection