5UYQ

70S ribosome bound with near-cognate ternary complex base-paired to A site codon, closed 30S (Structure III-nc)


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Ensemble cryo-EM elucidates the mechanism of translation fidelity

Loveland, A.B.Demo, G.Grigorieff, N.Korostelev, A.A.

(2017) Nature 546: 113-117

  • DOI: https://doi.org/10.1038/nature22397
  • Primary Citation of Related Structures:  
    5UYK, 5UYL, 5UYM, 5UYN, 5UYP, 5UYQ

  • PubMed Abstract: 

    Gene translation depends on accurate decoding of mRNA, the structural mechanism of which remains poorly understood. Ribosomes decode mRNA codons by selecting cognate aminoacyl-tRNAs delivered by elongation factor Tu (EF-Tu). Here we present high-resolution structural ensembles of ribosomes with cognate or near-cognate aminoacyl-tRNAs delivered by EF-Tu. Both cognate and near-cognate tRNA anticodons explore the aminoacyl-tRNA-binding site (A site) of an open 30S subunit, while inactive EF-Tu is separated from the 50S subunit. A transient conformation of decoding-centre nucleotide G530 stabilizes the cognate codon-anticodon helix, initiating step-wise 'latching' of the decoding centre. The resulting closure of the 30S subunit docks EF-Tu at the sarcin-ricin loop of the 50S subunit, activating EF-Tu for GTP hydrolysis and enabling accommodation of the aminoacyl-tRNA. By contrast, near-cognate complexes fail to induce the G530 latch, thus favouring open 30S pre-accommodation intermediates with inactive EF-Tu. This work reveals long-sought structural differences between the pre-accommodation of cognate and near-cognate tRNAs that elucidate the mechanism of accurate decoding.


  • Organizational Affiliation

    RNA Therapeutics Institute, Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, 368 Plantation Street, Worcester, Massachusetts 01605, USA.


Macromolecules

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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L2A [auth 04]271Escherichia coli K-12Mutation(s): 0 
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L3B [auth 05]209Escherichia coli K-12Mutation(s): 0 
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L4C [auth 06]201Escherichia coli K-12Mutation(s): 0 
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L5D [auth 07]177Escherichia coli K-12Mutation(s): 0 
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L6E [auth 08]176Escherichia coli K-12Mutation(s): 0 
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Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L9F [auth 09]149Escherichia coli K-12Mutation(s): 0 
UniProt
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Entity ID: 7
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L10G [auth 10]131Escherichia coli K-12Mutation(s): 0 
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Entity ID: 8
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L11H [auth 11]141Escherichia coli K-12Mutation(s): 0 
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Entity ID: 9
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L13I [auth 12]142Escherichia coli K-12Mutation(s): 0 
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Entity ID: 10
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L14J [auth 13]122Escherichia coli K-12Mutation(s): 0 
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Entity ID: 11
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L15K [auth 14]143Escherichia coli K-12Mutation(s): 0 
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Find proteins for P02413 (Escherichia coli (strain K12))
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Entity ID: 12
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L16L [auth 15]136Escherichia coli K-12Mutation(s): 0 
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Entity ID: 13
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L17M [auth 16]120Escherichia coli K-12Mutation(s): 0 
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Entity ID: 14
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L18N [auth 17]116Escherichia coli K-12Mutation(s): 0 
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Entity ID: 15
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L19O [auth 18]114Escherichia coli K-12Mutation(s): 0 
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Entity ID: 16
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L20P [auth 19]117Escherichia coli K-12Mutation(s): 0 
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Entity ID: 17
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L21Q [auth 20]103Escherichia coli K-12Mutation(s): 0 
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Entity ID: 18
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L22R [auth 21]110Escherichia coli K-12Mutation(s): 0 
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Entity ID: 19
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L23S [auth 22]93Escherichia coli K-12Mutation(s): 0 
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Entity ID: 20
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L24T [auth 23]102Escherichia coli K-12Mutation(s): 0 
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Entity ID: 21
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L25U [auth 24]94Escherichia coli K-12Mutation(s): 0 
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Entity ID: 22
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L27V [auth 25]75Escherichia coli K-12Mutation(s): 0 
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Entity ID: 23
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L28W [auth 26]77Escherichia coli K-12Mutation(s): 0 
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Entity ID: 24
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L29X [auth 27]63Escherichia coli K-12Mutation(s): 0 
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Entity ID: 25
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L30Y [auth 28]58Escherichia coli K-12Mutation(s): 0 
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Entity ID: 26
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L31Z [auth 29]66Escherichia coli K-12Mutation(s): 0 
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Entity ID: 27
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L32AA [auth 30]56Escherichia coli K-12Mutation(s): 0 
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Entity ID: 28
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L33BA [auth 31]50Escherichia coli K-12Mutation(s): 0 
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Entity ID: 29
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L34CA [auth 32]46Escherichia coli K-12Mutation(s): 0 
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Entity ID: 30
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L35DA [auth 33]64Escherichia coli K-12Mutation(s): 0 
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Entity ID: 31
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L36EA [auth 34]38Escherichia coli K-12Mutation(s): 0 
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Entity ID: 32
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S2FA [auth B]218Escherichia coli K-12Mutation(s): 0 
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Entity ID: 33
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S3GA [auth C]206Escherichia coli K-12Mutation(s): 0 
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Entity ID: 34
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S4HA [auth D]205Escherichia coli K-12Mutation(s): 0 
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Entity ID: 35
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S5IA [auth E]157Escherichia coli K-12Mutation(s): 0 
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Entity ID: 36
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S6JA [auth F]100Escherichia coli K-12Mutation(s): 0 
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Entity ID: 37
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S7KA [auth G]151Escherichia coli K-12Mutation(s): 0 
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Entity ID: 38
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S8LA [auth H]129Escherichia coli K-12Mutation(s): 0 
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Entity ID: 39
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S9MA [auth I]127Escherichia coli K-12Mutation(s): 0 
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Entity ID: 40
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S10NA [auth J]98Escherichia coli K-12Mutation(s): 0 
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Entity ID: 41
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S11OA [auth K]116Escherichia coli K-12Mutation(s): 0 
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Entity ID: 42
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S12PA [auth L]123Escherichia coli K-12Mutation(s): 0 
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Entity ID: 43
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S13QA [auth M]114Escherichia coli K-12Mutation(s): 0 
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Entity ID: 44
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S14RA [auth N]100Escherichia coli K-12Mutation(s): 0 
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Entity ID: 45
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S15SA [auth O]88Escherichia coli K-12Mutation(s): 0 
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Entity ID: 46
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S16TA [auth P]82Escherichia coli K-12Mutation(s): 0 
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Entity ID: 47
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S17UA [auth Q]80Escherichia coli K-12Mutation(s): 0 
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Entity ID: 48
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S18VA [auth R]65Escherichia coli K-12Mutation(s): 0 
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Entity ID: 49
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S19WA [auth S]79Escherichia coli K-12Mutation(s): 0 
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Entity ID: 50
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S20XA [auth T]85Escherichia coli K-12Mutation(s): 0 
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Entity ID: 51
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S21YA [auth U]65Escherichia coli K-12Mutation(s): 0 
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Entity ID: 52
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L1ZA [auth 03]223Escherichia coli K-12Mutation(s): 0 
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Entity ID: 59
MoleculeChains Sequence LengthOrganismDetailsImage
Elongation factor Tu 2HB [auth Z]392Escherichia coli K-12Mutation(s): 0 
Gene Names: tufAb3339JW3301
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Entity ID: 53
MoleculeChains LengthOrganismImage
16S ribosomal RNAAB [auth A]1,539Escherichia coli K-12
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Entity ID: 54
MoleculeChains LengthOrganismImage
23S ribosomal RNABB [auth 01]2,903Escherichia coli K-12
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Entity ID: 55
MoleculeChains LengthOrganismImage
5S ribosomal RNACB [auth 02]120Escherichia coli K-12
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Entity ID: 56
MoleculeChains LengthOrganismImage
tRNAfMetDB [auth X],
FB [auth W]
77Escherichia coli K-12
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Entity ID: 57
MoleculeChains LengthOrganismImage
mRNAEB [auth V]18Escherichia coli K-12
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Entity ID: 58
MoleculeChains LengthOrganismImage
tRNALysGB [auth Y]76Escherichia coli K-12
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
MODEL REFINEMENTRSRef1.1
MODEL REFINEMENTCNS1.3
MODEL REFINEMENTPHENIX1.11
RECONSTRUCTIONFREALIGN9.11

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01 GM106105
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01 GM107465
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesP01 GM62580
Howard Hughes Medical Institute (HHMI)United StatesHoward Hughes Medical Institute Post-Doctoral Fellow of the Helen Hay Whitney Foundation

Revision History  (Full details and data files)

  • Version 1.0: 2017-06-07
    Type: Initial release
  • Version 1.1: 2017-09-13
    Changes: Author supporting evidence, Data collection
  • Version 1.2: 2018-07-18
    Changes: Data collection, Experimental preparation
  • Version 1.3: 2019-11-20
    Changes: Author supporting evidence
  • Version 1.4: 2024-03-13
    Changes: Data collection, Database references