7Y04

Hsp90-AhR-p23 complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Cryo-EM structure of the cytosolic AhR complex.

Wen, Z.Zhang, Y.Zhang, B.Hang, Y.Xu, L.Chen, Y.Xie, Q.Zhao, Q.Zhang, L.Li, G.Zhao, B.Sun, F.Zhai, Y.Zhu, Y.

(2023) Structure 31: 295

  • DOI: https://doi.org/10.1016/j.str.2022.12.013
  • Primary Citation of Related Structures:  
    7Y04, 8H77

  • PubMed Abstract: 

    Aryl hydrocarbon receptor (AhR) is an important ligand-activated transcription factor involved in the regulation of various important physiological functions. Here, we report the cryo-EM structures of the Hsp90-AhR-p23 complex with or without bound XAP2, where the structure of the mouse AhR PAS-B domain is resolved. A highly conserved bridge motif of AhR is responsible for the interaction with the Hsp90 dimeric lumen. The ligand-free AhR PAS-B domain is attached to the Hsp90 dimer and is stabilized in the complex with bound XAP2. In addition, the DE-loop and a group of conserved pocket inner residues in the AhR PAS-B domain are found to be important for ligand binding. These results reveal the structural basis of the biological functions of AhR. Moreover, the protein purification method presented here allows the isolation of stable mouse AhR protein, which could be used to develop high-sensitivity biosensors for environmental pollutant detection.


  • Organizational Affiliation

    National Key Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing, China.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Heat shock protein HSP 90-beta
A, B
756Mus musculusMutation(s): 0 
Gene Names: Hsp90ab1Hsp84Hsp84-1Hspcb
UniProt
Find proteins for P11499 (Mus musculus)
Explore P11499 
Go to UniProtKB:  P11499
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UniProt GroupP11499
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Prostaglandin E synthase 3
C, D
172Mus musculusMutation(s): 0 
Gene Names: Ptges3Sid3177Tebp
EC: 5.3.99.3
UniProt
Find proteins for Q9R0Q7 (Mus musculus)
Explore Q9R0Q7 
Go to UniProtKB:  Q9R0Q7
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UniProt GroupQ9R0Q7
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  • Reference Sequence
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Aryl hydrocarbon receptor410Mus musculusMutation(s): 0 
UniProt
Find proteins for P30561 (Mus musculus)
Explore P30561 
Go to UniProtKB:  P30561
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UniProt GroupP30561
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Not funded--

Revision History  (Full details and data files)

  • Version 1.0: 2023-01-04
    Type: Initial release
  • Version 1.1: 2023-01-25
    Changes: Database references
  • Version 1.2: 2023-02-01
    Changes: Database references
  • Version 1.3: 2023-03-22
    Changes: Database references
  • Version 1.4: 2024-07-03
    Changes: Data collection