6XGF

Escherichia coli transcription-translation complex B (TTC-B) containing an 30 nt long mRNA spacer, NusG, and fMet-tRNAs at E-site and P-site


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 5.00 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural basis of transcription-translation coupling.

Wang, C.Molodtsov, V.Firlar, E.Kaelber, J.T.Blaha, G.Su, M.Ebright, R.H.

(2020) Science 369: 1359-1365

  • DOI: https://doi.org/10.1126/science.abb5317
  • Primary Citation of Related Structures:  
    6VU3, 6VYQ, 6VYR, 6VYS, 6VYT, 6VYU, 6VYW, 6VYX, 6VYY, 6VYZ, 6VZ2, 6VZ3, 6VZ5, 6VZ7, 6VZJ, 6X6T, 6X7F, 6X7K, 6X9Q, 6XDQ, 6XDR, 6XGF, 6XII, 6XIJ

  • PubMed Abstract: 

    In bacteria, transcription and translation are coupled processes in which the movement of RNA polymerase (RNAP)-synthesizing messenger RNA (mRNA) is coordinated with the movement of the first ribosome-translating mRNA. Coupling is modulated by the transcription factors NusG (which is thought to bridge RNAP and the ribosome) and NusA. Here, we report cryo-electron microscopy structures of Escherichia coli transcription-translation complexes (TTCs) containing different-length mRNA spacers between RNAP and the ribosome active-center P site. Structures of TTCs containing short spacers show a state incompatible with NusG bridging and NusA binding (TTC-A, previously termed "expressome"). Structures of TTCs containing longer spacers reveal a new state compatible with NusG bridging and NusA binding (TTC-B) and reveal how NusG bridges and NusA binds. We propose that TTC-B mediates NusG- and NusA-dependent transcription-translation coupling.


  • Organizational Affiliation

    Rutgers New Jersey CryoEM/CryoET Core Facility and Institute for Quantitative Biomedicine, Rutgers University, Piscataway, NJ 08854, USA.


Macromolecules

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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L21A [auth 0]103Escherichia coliMutation(s): 0 
Gene Names: rplU
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L22B [auth 1]110Escherichia coliMutation(s): 0 
Gene Names: rplV
UniProt
Find proteins for P61175 (Escherichia coli (strain K12))
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L23C [auth 2]100Escherichia coliMutation(s): 0 
Gene Names: rplW
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L24D [auth 3]104Escherichia coliMutation(s): 0 
Gene Names: rplX
UniProt
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L25E [auth 4]94Escherichia coliMutation(s): 0 
Gene Names: rplY
UniProt
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Entity ID: 9
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L10I [auth 9]165Escherichia coliMutation(s): 0 
Gene Names: rplJ
UniProt
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Entity ID: 11
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerase subunit betaK [auth AA]1,342Escherichia coliMutation(s): 0 
Gene Names: rpoB
EC: 2.7.7.6
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Entity ID: 12
MoleculeChains Sequence LengthOrganismDetailsImage
Transcription termination/antitermination protein NusGL [auth AB]181Escherichia coliMutation(s): 0 
Gene Names: nusG
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Entity ID: 13
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerase subunit alphaM [auth AC],
N [auth AD]
329Escherichia coliMutation(s): 0 
Gene Names: rpoA
EC: 2.7.7.6
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Entity ID: 14
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerase subunit beta'O [auth AE]1,407Escherichia coliMutation(s): 0 
Gene Names: rpoC
EC: 2.7.7.6
UniProt
Find proteins for P0A8T7 (Escherichia coli (strain K12))
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Entity ID: 15
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerase subunit omegaP [auth AF]91Escherichia coliMutation(s): 0 
Gene Names: rpoZ
EC: 2.7.7.6
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Entity ID: 16
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S18R [auth C]75Escherichia coliMutation(s): 0 
Gene Names: rpsR
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Entity ID: 18
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S20T [auth E]87Escherichia coliMutation(s): 0 
Gene Names: rpsT
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Entity ID: 19
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S21U [auth F]71Escherichia coliMutation(s): 0 
Gene Names: rpsU
UniProt
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Entity ID: 20
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S2V [auth G]241Escherichia coliMutation(s): 0 
Gene Names: rpsB
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Entity ID: 21
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S1W [auth H]557Escherichia coliMutation(s): 0 
UniProt
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Entity ID: 22
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S3X [auth I]233Escherichia coliMutation(s): 0 
Gene Names: rpsC
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Entity ID: 23
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S4Y [auth J]206Escherichia coliMutation(s): 0 
Gene Names: rpsD
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Entity ID: 24
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S5Z [auth K]167Escherichia coliMutation(s): 0 
Gene Names: rpsE
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Entity ID: 25
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S6AA [auth L]135Escherichia coliMutation(s): 0 
Gene Names: rpsF
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Entity ID: 26
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S7BA [auth M]179Escherichia coliMutation(s): 0 
Gene Names: rpsG
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Entity ID: 27
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S8CA [auth N]130Escherichia coliMutation(s): 0 
Gene Names: rpsH
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Entity ID: 28
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S9DA [auth O]130Escherichia coliMutation(s): 0 
Gene Names: rpsI
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Entity ID: 29
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S10EA [auth P]103Escherichia coliMutation(s): 0 
Gene Names: rpsJ
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Entity ID: 30
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S11FA [auth Q]129Escherichia coliMutation(s): 0 
Gene Names: rpsK
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Entity ID: 31
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S12GA [auth R]124Escherichia coliMutation(s): 0 
Gene Names: rpsL
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Entity ID: 32
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S14HA [auth S]101Escherichia coliMutation(s): 0 
Gene Names: rpsN
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Entity ID: 33
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S15IA [auth T]89Escherichia coliMutation(s): 0 
Gene Names: rpsO
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Entity ID: 34
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S16JA [auth U]82Escherichia coliMutation(s): 0 
Gene Names: rpsP
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Entity ID: 35
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S17KA [auth V]84Escherichia coliMutation(s): 0 
Gene Names: rpsQ
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Entity ID: 36
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S19LA [auth W]92Escherichia coliMutation(s): 0 
Gene Names: rpsS
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Entity ID: 37
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S13MA [auth X]118Escherichia coliMutation(s): 0 
Gene Names: rpsM
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Entity ID: 38
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L11NA [auth Y]142Escherichia coliMutation(s): 0 
Gene Names: rplK
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Entity ID: 39
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L7/L12OA [auth Z]121Escherichia coliMutation(s): 0 
Gene Names: rplL
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Entity ID: 41
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L27QA [auth b]85Escherichia coliMutation(s): 0 
Gene Names: rpmA
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Entity ID: 42
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L28RA [auth c]78Escherichia coliMutation(s): 0 
Gene Names: rpmB
UniProt
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Entity ID: 44
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L29TA [auth e]63Escherichia coliMutation(s): 0 
Gene Names: rpmC
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Entity ID: 45
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L30UA [auth f]59Escherichia coliMutation(s): 0 
Gene Names: rpmD
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Entity ID: 46
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L31VA [auth g]70Escherichia coliMutation(s): 0 
Gene Names: rpmE
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Entity ID: 47
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L2WA [auth h]273Escherichia coliMutation(s): 0 
Gene Names: rplB
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Entity ID: 48
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L32XA [auth i]57Escherichia coliMutation(s): 0 
Gene Names: rpmF
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Entity ID: 49
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L3YA [auth j]209Escherichia coliMutation(s): 0 
Gene Names: rplC
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Entity ID: 50
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L33ZA [auth k]55Escherichia coliMutation(s): 0 
Gene Names: rpmG
UniProt
Find proteins for P0A7N9 (Escherichia coli (strain K12))
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Entity ID: 51
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L4AB [auth l]201Escherichia coliMutation(s): 0 
Gene Names: rplD
UniProt
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Entity ID: 52
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L34BB [auth m]46Escherichia coliMutation(s): 0 
Gene Names: rpmH
UniProt
Find proteins for P0A7P5 (Escherichia coli (strain K12))
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Entity ID: 53
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L5CB [auth n]179Escherichia coliMutation(s): 0 
Gene Names: rplE
UniProt
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Entity ID: 54
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L35DB [auth o]65Escherichia coliMutation(s): 0 
Gene Names: rpmI
UniProt
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Entity ID: 55
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L6EB [auth p]177Escherichia coliMutation(s): 0 
Gene Names: rplF
UniProt
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Entity ID: 56
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L36FB [auth q]38Escherichia coliMutation(s): 0 
Gene Names: rpmJ
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Entity ID: 57
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L9GB [auth r]149Escherichia coliMutation(s): 0 
Gene Names: rplI
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Entity ID: 58
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L13HB [auth s]142Escherichia coliMutation(s): 0 
Gene Names: rplM
UniProt
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Entity ID: 59
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L14IB [auth t]123Escherichia coliMutation(s): 0 
Gene Names: rplN
UniProt
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Entity ID: 60
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L15JB [auth u]144Escherichia coliMutation(s): 0 
Gene Names: rplO
UniProt
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Entity ID: 61
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L16KB [auth v]136Escherichia coliMutation(s): 0 
Gene Names: rplP
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Entity ID: 62
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L17LB [auth w]127Escherichia coliMutation(s): 0 
Gene Names: rplQ
UniProt
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Entity ID: 63
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L18MB [auth x]117Escherichia coliMutation(s): 0 
Gene Names: rplR
UniProt
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Entity ID: 64
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L19NB [auth y]115Escherichia coliMutation(s): 0 
Gene Names: rplS
UniProt
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Entity ID: 65
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L20OB [auth z]118Escherichia coliMutation(s): 0 
Gene Names: rplT
UniProt
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Entity ID: 6
MoleculeChains LengthOrganismImage
NT DNAF [auth 5]36synthetic construct
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Entity ID: 7
MoleculeChains LengthOrganismImage
T DNAG [auth 6]36synthetic construct
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Entity ID: 8
MoleculeChains LengthOrganismImage
mRNA with 30 nt long spacerH [auth 7]45synthetic construct
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Entity ID: 10
MoleculeChains LengthOrganismImage
E-site and P-site tRNA (fMet)J [auth A],
Q [auth B]
76Escherichia coli
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Entity ID: 17
MoleculeChains LengthOrganismImage
16S rRNAS [auth D]1,542Escherichia coli
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Entity ID: 40
MoleculeChains LengthOrganismImage
23S rRNAPA [auth a]2,904Escherichia coli
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Entity ID: 43
MoleculeChains LengthOrganismImage
5S rRNASA [auth d]120Escherichia coli
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 5.00 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United States--

Revision History  (Full details and data files)

  • Version 1.0: 2020-09-02
    Type: Initial release
  • Version 1.1: 2020-09-16
    Changes: Database references
  • Version 1.2: 2020-09-23
    Changes: Database references