6AWC

Structure of 30S ribosomal subunit and RNA polymerase complex in rotated state


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 7.90 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 2.3 of the entry. See complete history


Literature

Structure of RNA polymerase bound to ribosomal 30S subunit.

Demo, G.Rasouly, A.Vasilyev, N.Svetlov, V.Loveland, A.B.Diaz-Avalos, R.Grigorieff, N.Nudler, E.Korostelev, A.A.

(2017) Elife 6

  • DOI: 10.7554/eLife.28560
  • Primary Citation of Related Structures:  
    6AWD, 6AWC, 6AWB

  • PubMed Abstract: 
  • In bacteria, mRNA transcription and translation are coupled to coordinate optimal gene expression and maintain genome stability. Coupling is thought to involve direct interactions between RNA polymerase (RNAP) and the translational machinery. We present cryo-EM structures of E ...

    In bacteria, mRNA transcription and translation are coupled to coordinate optimal gene expression and maintain genome stability. Coupling is thought to involve direct interactions between RNA polymerase (RNAP) and the translational machinery. We present cryo-EM structures of E. coli RNAP core bound to the small ribosomal 30S subunit. The complex is stable under cell-like ionic conditions, consistent with functional interaction between RNAP and the 30S subunit. The RNA exit tunnel of RNAP aligns with the Shine-Dalgarno-binding site of the 30S subunit. Ribosomal protein S1 forms a wall of the tunnel between RNAP and the 30S subunit, consistent with its role in directing mRNAs onto the ribosome. The nucleic-acid-binding cleft of RNAP samples distinct conformations, suggesting different functional states during transcription-translation coupling. The architecture of the 30S•RNAP complex provides a structural basis for co-localization of the transcriptional and translational machineries, and inform future mechanistic studies of coupled transcription and translation.


    Organizational Affiliation

    RNA Therapeutics Institute, Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, United States.



Macromolecules

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-directed RNA polymerase subunit alphaB [auth 01], C [auth 02]229Escherichia coliMutation(s): 0 
Gene Names: rpoAZ4665ECs4160
EC: 2.7.7.6
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-directed RNA polymerase subunit betaD [auth 03]1340Escherichia coliMutation(s): 0 
Gene Names: rpoBECS88_4448
EC: 2.7.7.6
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-directed RNA polymerase subunit beta'E [auth 04]1369Escherichia coliMutation(s): 0 
Gene Names: rpoCZ5561ECs4911
EC: 2.7.7.6
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-directed RNA polymerase subunit omegaF [auth 05]59Escherichia coliMutation(s): 0 
Gene Names: rpoZECS88_4064
EC: 2.7.7.6
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
30S ribosomal protein S1G [auth B]153Escherichia coliMutation(s): 0 
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetailsImage
30S ribosomal protein S2H [auth E]218Escherichia coliMutation(s): 0 
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
30S ribosomal protein S3I [auth F]206Escherichia coliMutation(s): 0 
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Entity ID: 9
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30S ribosomal protein S4J [auth G]205Escherichia coliMutation(s): 0 
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Entity ID: 10
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30S ribosomal protein S5K [auth H]157Escherichia coliMutation(s): 0 
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Entity ID: 11
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30S ribosomal protein S6L [auth I]100Escherichia coliMutation(s): 0 
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Entity ID: 12
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30S ribosomal protein S7M [auth J]151Escherichia coliMutation(s): 0 
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Entity ID: 13
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30S ribosomal protein S8N [auth K]129Escherichia coliMutation(s): 0 
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Entity ID: 14
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30S ribosomal protein S9O [auth L]127Escherichia coliMutation(s): 0 
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Entity ID: 15
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30S ribosomal protein S10P [auth M]98Escherichia coliMutation(s): 0 
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Entity ID: 16
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30S ribosomal protein S11Q [auth N]116Escherichia coliMutation(s): 0 
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Entity ID: 17
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30S ribosomal protein S12R [auth O]123Escherichia coliMutation(s): 0 
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Entity ID: 18
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30S ribosomal protein S13S [auth P]114Escherichia coliMutation(s): 0 
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Entity ID: 19
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30S ribosomal protein S14T [auth Q]100Escherichia coliMutation(s): 0 
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Entity ID: 20
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30S ribosomal protein S15U [auth R]88Escherichia coliMutation(s): 0 
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Entity ID: 21
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30S ribosomal protein S16V [auth S]82Escherichia coliMutation(s): 0 
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Entity ID: 22
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30S ribosomal protein S17W [auth T]80Escherichia coliMutation(s): 0 
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Entity ID: 23
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30S ribosomal protein S18X [auth U]65Escherichia coliMutation(s): 0 
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Entity ID: 24
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30S ribosomal protein S19Y [auth V]79Escherichia coliMutation(s): 0 
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Entity ID: 25
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30S ribosomal protein S20Z [auth W]85Escherichia coliMutation(s): 0 
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Entity ID: 26
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30S ribosomal protein S21AA [auth X]65Escherichia coliMutation(s): 0 
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Entity ID: 1
MoleculeChainsLengthOrganismImage
16S rRNAA1539Escherichia coli
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 7.90 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 StatesGM106105
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesGM107465
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesGM107329

Revision History  (Full details and data files)

  • Version 1.0: 2017-10-18
    Type: Initial release
  • Version 2.0: 2017-10-25
    Changes: Database references, Polymer sequence
  • Version 2.1: 2017-12-06
    Changes: Author supporting evidence
  • Version 2.2: 2018-07-18
    Changes: Data collection
  • Version 2.3: 2020-01-01
    Changes: Author supporting evidence