6TQN

rrn anti-termination complex without S4


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 1.3 of the entry. See complete history


Literature

Structure-Based Mechanisms of a Molecular RNA Polymerase/Chaperone Machine Required for Ribosome Biosynthesis.

Huang, Y.H.Hilal, T.Loll, B.Burger, J.Mielke, T.Bottcher, C.Said, N.Wahl, M.C.

(2020) Mol Cell 79: 1024-1036.e5

  • DOI: 10.1016/j.molcel.2020.08.010
  • Primary Citation of Related Structures:  
    6TQN, 6TQO

  • PubMed Abstract: 
  • Bacterial ribosomal RNAs are synthesized by a dedicated, conserved transcription-elongation complex that transcribes at high rates, shields RNA polymerase from premature termination, and supports co-transcriptional RNA folding, modification, processing, and ribosomal subunit assembly by presently unknown mechanisms ...

    Bacterial ribosomal RNAs are synthesized by a dedicated, conserved transcription-elongation complex that transcribes at high rates, shields RNA polymerase from premature termination, and supports co-transcriptional RNA folding, modification, processing, and ribosomal subunit assembly by presently unknown mechanisms. We have determined cryo-electron microscopy structures of complete Escherichia coli ribosomal RNA transcription elongation complexes, comprising RNA polymerase; DNA; RNA bearing an N-utilization-site-like anti-termination element; Nus factors A, B, E, and G; inositol mono-phosphatase SuhB; and ribosomal protein S4. Our structures and structure-informed functional analyses show that fast transcription and anti-termination involve suppression of NusA-stabilized pausing, enhancement of NusG-mediated anti-backtracking, sequestration of the NusG C-terminal domain from termination factor ρ, and the ρ blockade. Strikingly, the factors form a composite RNA chaperone around the RNA polymerase RNA-exit tunnel, which supports co-transcriptional RNA folding and annealing of distal RNA regions. Our work reveals a polymerase/chaperone machine required for biosynthesis of functional ribosomes.


    Organizational Affiliation

    Laboratory of Structural Biochemistry, Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustraβe 6, 14195 Berlin, Germany; Macromolecular Crystallography, Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Straße 15, 12489 Berlin, Germany. Electronic address: markus.wahl@fu-berlin.de.



Macromolecules

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Inositol monophosphataseA [auth T]267Escherichia coliMutation(s): 0 
Gene Names: B9S25_006930
EC: 3.1.3.25
UniProt
Find proteins for P0ADG4 (Escherichia coli (strain K12))
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Inositol-1-monophosphataseB [auth S]271Escherichia coliMutation(s): 0 
Gene Names: suhBssyAb2533JW2517
EC: 3.1.3.25
UniProt
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Transcription termination/antitermination protein NusAC [auth A]497Escherichia coliMutation(s): 0 
Gene Names: nusACCU01_003250
UniProt
Find proteins for P0AFF6 (Escherichia coli (strain K12))
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Transcription antitermination protein NusBD [auth B]141Escherichia coliMutation(s): 0 
Gene Names: nusBCCU01_023355
UniProt
Find proteins for P0A780 (Escherichia coli (strain K12))
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
30S ribosomal protein S10E106Escherichia coliMutation(s): 0 
Gene Names: rpsJAD31_3986
UniProt
Find proteins for P0A7R5 (Escherichia coli (strain K12))
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
Transcription termination/antitermination protein NusGF [auth G]184Escherichia coliMutation(s): 0 
Gene Names: nusGHMPREF1611_01657
UniProt
Find proteins for P0AFG0 (Escherichia coli (strain K12))
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-directed RNA polymerase subunit alphaG [auth U], H [auth V]329Escherichia coliMutation(s): 0 
Gene Names: rpoApezphssezb3295JW3257
EC: 2.7.7.6
UniProt
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-directed RNA polymerase subunit omegaI [auth W]91Escherichia coliMutation(s): 0 
Gene Names: rpoZb3649JW3624
EC: 2.7.7.6
UniProt
Find proteins for P0A800 (Escherichia coli (strain K12))
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Entity ID: 9
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-directed RNA polymerase subunit betaJ [auth X]1342Escherichia coliMutation(s): 0 
Gene Names: rpoBZ5560ECs4910
EC: 2.7.7.6
UniProt
Find proteins for P0A8V2 (Escherichia coli (strain K12))
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Entity ID: 10
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-directed RNA polymerase subunit beta'K [auth Y]1417Escherichia coliMutation(s): 0 
Gene Names: rpoCA1WS_04718
EC: 2.7.7.6
UniProt
Find proteins for P0A8T7 (Escherichia coli (strain K12))
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Entity ID: 11
MoleculeChainsLengthOrganismImage
rrnGnutL [auth R]85Escherichia coli
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Entity ID: 12
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tDNAM [auth L]35Escherichia coli
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Entity ID: 13
MoleculeChainsLengthOrganismImage
ntDNAN [auth K]35Escherichia coli
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Experimental Data & Validation

Experimental Data

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

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2020-08-05
    Type: Initial release
  • Version 1.1: 2020-09-16
    Changes: Database references
  • Version 1.2: 2020-09-30
    Changes: Database references
  • Version 1.3: 2020-12-16
    Changes: Database references