8JUY

Human ATAD2 Walker B mutant-H3/H4K5Q complex, ATP state (Class II)


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.34 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

Structure of the human ATAD2 AAA+ histone chaperone reveals mechanism of regulation and inter-subunit communication.

Cho, C.Ganser, C.Uchihashi, T.Kato, K.Song, J.J.

(2023) Commun Biol 6: 993-993

  • DOI: https://doi.org/10.1038/s42003-023-05373-1
  • Primary Citation of Related Structures:  
    8H3H, 8JUW, 8JUY, 8JUZ

  • PubMed Abstract: 

    ATAD2 is a non-canonical ATP-dependent histone chaperone and a major cancer target. Despite widespread efforts to design drugs targeting the ATAD2 bromodomain, little is known about the overall structural organization and regulation of ATAD2. Here, we present the 3.1 Å cryo-EM structure of human ATAD2 in the ATP state, showing a shallow hexameric spiral that binds a peptide substrate at the central pore. The spiral conformation is locked by an N-terminal linker domain (LD) that wedges between the seam subunits, thus limiting ATP-dependent symmetry breaking of the AAA+ ring. In contrast, structures of the ATAD2-histone H3/H4 complex show the LD undocked from the seam, suggesting that H3/H4 binding unlocks the AAA+ spiral by allosterically releasing the LD. These findings, together with the discovery of an inter-subunit signaling mechanism, reveal a unique regulatory mechanism for ATAD2 and lay the foundation for developing new ATAD2 inhibitors.


  • Organizational Affiliation

    Department of Biological Sciences, KAIST Stem Cell Center, Basic Science 4.0 Institute, and KI for BioCentury, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Korea. carol.cho@kaist.ac.kr.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
ATPase family AAA domain-containing protein 2
A, B, C, D, E
A, B, C, D, E, F
831Homo sapiensMutation(s): 1 
Gene Names: ATAD2L16PRO2000
EC: 3.6.1
UniProt & NIH Common Fund Data Resources
Find proteins for Q6PL18 (Homo sapiens)
Explore Q6PL18 
Go to UniProtKB:  Q6PL18
PHAROS:  Q6PL18
GTEx:  ENSG00000156802 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ6PL18
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.34 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Research Foundation (NRF, Korea)Korea, Republic Of2022R1C1C2003419
National Research Foundation (NRF, Korea)Korea, Republic Of2019R1A6A1A1007388
National Research Foundation (NRF, Korea)Korea, Republic Of2020R1A2B5B03001517
National Research Foundation (NRF, Korea)Korea, Republic Of2020M3E5E2037170
National Research Foundation (NRF, Korea)Korea, Republic Of2021K2A9A2A08000088

Revision History  (Full details and data files)

  • Version 1.0: 2023-10-18
    Type: Initial release