6XH7

CueR-TAC without RNA


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.90 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

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This is version 1.3 of the entry. See complete history


Literature

Structural basis of copper-efflux-regulator-dependent transcription activation.

Shi, W.Zhang, B.Jiang, Y.Liu, C.Zhou, W.Chen, M.Yang, Y.Hu, Y.Liu, B.

(2021) iScience 24: 102449-102449

  • DOI: https://doi.org/10.1016/j.isci.2021.102449
  • Primary Citation of Related Structures:  
    6XH7, 6XH8

  • PubMed Abstract: 

    The copper efflux regulator (CueR), a representative member of mercury resistance regulator (MerR) family metalloregulators, controls expression of copper homeostasis-regulating genes in bacteria. The mechanism of transcription activation by CueR and other MerR family regulators is bending the spacer domain of promoter DNA. Here, we report the cryo-EM structures of the intact CueR-dependent transcription activation complexes. The structures show that CueR dimer bends the 19-bp promoter spacer to realign the -35 and -10 elements for recognition by σ 70 -RNA polymerase holoenzyme and reveal a previously unreported interaction between the DNA-binding domain (DBD) from one CueR subunit and the σ 70 nonconserved region (σNCR). Functional studies have shown that the CueR-σNCR interaction plays an auxiliary role in CueR-dependent transcription, assisting the activation mechanism of bending promoter DNA by CueR dimer. Because DBDs are highly conserved in sequence and structure, this transcription-activating mechanism could be generally used by MerR family regulators.


  • Organizational Affiliation

    Section of Transcription & Gene Regulation, The Hormel Institute, University of Minnesota, Austin, MN, USA.


Macromolecules

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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerase subunit alpha
A, B
329Escherichia coliMutation(s): 0 
Gene Names: rpoAZ4665ECs4160
EC: 2.7.7.6
UniProt
Find proteins for P0A7Z4 (Escherichia coli (strain K12))
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UniProt GroupP0A7Z4
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerase subunit beta1,342Escherichia coliMutation(s): 0 
Gene Names: rpoBECS88_4448
EC: 2.7.7.6
UniProt
Find proteins for P0A8V2 (Escherichia coli (strain K12))
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UniProt GroupP0A8V2
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerase subunit beta'1,407Escherichia coliMutation(s): 0 
Gene Names: rpoCZ5561ECs4911
EC: 2.7.7.6
UniProt
Find proteins for P0A8T7 (Escherichia coli (strain K12))
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UniProt GroupP0A8T7
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerase subunit omega91Escherichia coliMutation(s): 0 
Gene Names: rpoZECS88_4064
EC: 2.7.7.6
UniProt
Find proteins for P0A800 (Escherichia coli (strain K12))
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UniProt GroupP0A800
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
RNA polymerase sigma factor RpoD628Escherichia coliMutation(s): 0 
Gene Names: rpoDaltb3067JW3039
UniProt
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UniProt GroupP00579
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Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
HTH-type transcriptional regulator CueR
G, H
143Escherichia coliMutation(s): 0 
Gene Names: cueRcopRybbIb0487JW0476
UniProt
Find proteins for P0A9G4 (Escherichia coli (strain K12))
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Entity ID: 7
MoleculeChains LengthOrganismImage
NONTEMPLATE STRAND DNA (54-MER)I [auth 1]54Escherichia coli
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Entity ID: 8
MoleculeChains LengthOrganismImage
TEMPLATE STRAND DNA (54-MER)J [auth 2]54Escherichia coli
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.90 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
MODEL REFINEMENTPHENIX
RECONSTRUCTIONRELION

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2021-04-14
    Type: Initial release
  • Version 1.1: 2021-05-26
    Changes: Source and taxonomy
  • Version 1.2: 2021-07-28
    Changes: Database references
  • Version 1.3: 2024-03-06
    Changes: Data collection, Database references