4V6G

Initiation complex of 70S ribosome with two tRNAs and mRNA.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 Å
  • R-Value Free: 
    0.252 (Depositor), 0.215 (DCC) 
  • R-Value Work: 
    0.213 (Depositor), 0.212 (DCC) 

Starting Models: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history

Re-refinement Note

A newer entry is available that reflects an alternative modeling of the original data: 6QNQ


Literature

Structural aspects of messenger RNA reading frame maintenance by the ribosome.

Jenner, L.B.Demeshkina, N.Yusupova, G.Yusupov, M.

(2010) Nat Struct Mol Biol 17: 555-560

  • DOI: https://doi.org/10.1038/nsmb.1790
  • Primary Citation of Related Structures:  
    4V6F, 4V6G

  • PubMed Abstract: 

    One key question in protein biosynthesis is how the ribosome couples mRNA and tRNA movements to prevent disruption of weak codon-anticodon interactions and loss of the translational reading frame during translocation. Here we report the complete path of mRNA on the 70S ribosome at the atomic level (3.1-A resolution), and we show that one of the conformational rearrangements that occurs upon transition from initiation to elongation is a narrowing of the downstream mRNA tunnel. This rearrangement triggers formation of a network of interactions between the mRNA downstream of the A-site codon and the elongating ribosome. Our data elucidate the mechanism by which hypermodified nucleoside 2-methylthio-N6 isopentenyl adenosine at position 37 (ms(2)i(6)A37) in tRNA(Phe)(GAA) stabilizes mRNA-tRNA interactions in all three tRNA binding sites. Another network of contacts is formed between this tRNA modification and ribosomal elements surrounding the mRNA E/P kink, resulting in the anchoring of P-site tRNA. These data allow rationalization of how modification deficiencies of ms(2)i(6)A37 in tRNAs may lead to shifts of the translational reading frame.


  • Organizational Affiliation

    Institut de Génétique et de Biologie Moléculaire et Cellulaire, Département de Biologie et de Génomique Structurales, Illkirch, France.


Macromolecules

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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S2B [auth AE],
DB [auth CE]
256Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S3C [auth AF],
EB [auth CF]
239Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S4D [auth AG],
FB [auth CG]
209Thermus thermophilus HB8Mutation(s): 0 
UniProt
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S5E [auth AH],
GB [auth CH]
162Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S6F [auth AI],
HB [auth CI]
101Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 7
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S7G [auth AJ],
IB [auth CJ]
156Thermus thermophilus HB8Mutation(s): 0 
UniProt
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Entity ID: 8
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S8H [auth AK],
JB [auth CK]
138Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 9
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S9I [auth AL],
KB [auth CL]
128Thermus thermophilus HB8Mutation(s): 0 
UniProt
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Entity ID: 10
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S10J [auth AM],
LB [auth CM]
105Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 11
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S11K [auth AN],
MB [auth CN]
129Thermus thermophilus HB8Mutation(s): 0 
UniProt
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Entity ID: 12
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S12L [auth AO],
NB [auth CO]
132Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 13
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S13M [auth AP],
OB [auth CP]
126Thermus thermophilus HB8Mutation(s): 0 
UniProt
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Entity ID: 14
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S14N [auth AQ],
PB [auth CQ]
61Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 15
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S15O [auth AR],
QB [auth CR]
89Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 16
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S16P [auth AS],
RB [auth CS]
88Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 17
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S17Q [auth AT],
SB [auth CT]
105Thermus thermophilus HB8Mutation(s): 0 
UniProt
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Entity ID: 18
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S18R [auth AU],
TB [auth CU]
88Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 19
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S19S [auth AV],
UB [auth CV]
93Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 20
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S20T [auth AW],
VB [auth CW]
106Thermus thermophilus HB8Mutation(s): 0 
UniProt
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Entity ID: 21
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN THXU [auth AX],
WB [auth CX]
27Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 26
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L2AA [auth BD],
CC [auth DD]
276Thermus thermophilus HB8Mutation(s): 0 
UniProt
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Entity ID: 27
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L3BA [auth BE],
DC [auth DE]
206Thermus thermophilus HB8Mutation(s): 0 
UniProt
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Entity ID: 28
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L4CA [auth BF],
EC [auth DF]
210Thermus thermophilus HB8Mutation(s): 0 
UniProt
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Entity ID: 29
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L5DA [auth BG],
FC [auth DG]
182Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 30
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L6EA [auth BH],
GC [auth DH]
180Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 31
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L9FA [auth BK],
HC [auth DK]
148Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 32
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L13GA [auth BM],
IC [auth DM]
140Thermus thermophilus HB8Mutation(s): 0 
UniProt
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Entity ID: 33
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L14HA [auth BN],
JC [auth DN]
122Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 34
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L15IA [auth BO],
KC [auth DO]
150Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 35
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L16JA [auth BP],
LC [auth DP]
141Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 36
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L17KA [auth B0],
MC [auth D0]
118Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 37
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L18LA [auth BQ],
NC [auth DQ]
112Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 38
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L19MA [auth BR],
OC [auth DR]
146Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 39
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L20NA [auth B1],
PC [auth D1]
118Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 40
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L21OA [auth B2],
QC [auth D2]
101Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 41
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L22PA [auth BS],
RC [auth DS]
113Thermus thermophilus HB8Mutation(s): 0 
UniProt
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Entity ID: 42
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L23QA [auth BT],
SC [auth DT]
96Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 43
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L24RA [auth BU],
TC [auth DU]
110Thermus thermophilus HB8Mutation(s): 0 
UniProt
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Entity ID: 44
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L25SA [auth BV],
UC [auth DV]
206Thermus thermophilus HB8Mutation(s): 0 
UniProt
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Entity ID: 45
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L27TA [auth B3],
VC [auth D3]
85Thermus thermophilus HB8Mutation(s): 0 
UniProt
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Entity ID: 46
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L28UA [auth BZ],
WC [auth DZ]
98Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 47
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L29VA [auth BW],
XC [auth DW]
72Thermus thermophilus HB8Mutation(s): 0 
UniProt
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Entity ID: 48
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L30WA [auth BX],
YC [auth DX]
60Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 49
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L31XA [auth B4],
ZC [auth D4]
71Thermus thermophilus HB8Mutation(s): 0 
UniProt
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Entity ID: 50
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L32AD [auth D5],
YA [auth B5]
60Thermus thermophilus HB8Mutation(s): 0 
UniProt
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Entity ID: 51
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L33BD [auth D6],
ZA [auth B6]
54Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 52
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L34AB [auth B7],
CD [auth D7]
49Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 53
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L35BB [auth B8],
DD [auth D8]
65Thermus thermophilus HB8Mutation(s): 0 
UniProt
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Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download Ideal Coordinates CCD File 
CU [auth AA]
DU [auth AA]
FU [auth AG]
MNB [auth CQ]
QU [auth AQ]
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
MG
Query on MG

Download Ideal Coordinates CCD File 
AAA [auth BA]
AAB [auth CA]
AAC [auth DA]
AAD [auth DO]
ABA [auth BA]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 Å
  • R-Value Free:  0.252 (Depositor), 0.215 (DCC) 
  • R-Value Work:  0.213 (Depositor), 0.212 (DCC) 
Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 210.46α = 90
b = 452.18β = 90
c = 626.12γ = 90
Software Package:
Software NamePurpose
CNSrefinement
PDB_EXTRACTdata extraction
XDSdata scaling
XDSdata reduction
XSCALEdata scaling
CNSphasing

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: 2023-09-20
    Changes: Advisory, Data collection, Database references, Derived calculations, Refinement description
  • Version 1.3: 2024-12-25
    Changes: Advisory, Derived calculations, Structure summary