Crystal structure of HIRA(644-1017)

Experimental Data Snapshot

  • Resolution: 2.45 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.204 

wwPDB Validation   3D Report Full Report

This is version 1.4 of the entry. See complete history


Functional activity of the H3.3 histone chaperone complex HIRA requires trimerization of the HIRA subunit

Ray-Gallet, D.Ricketts, M.D.Sato, Y.Gupta, K.Boyarchuk, E.Senda, T.Marmorstein, R.Almouzni, G.

(2018) Nat Commun 9: 3103-3103

  • DOI: https://doi.org/10.1038/s41467-018-05581-y
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The HIRA histone chaperone complex deposits the histone variant H3.3 onto chromatin in a DNA synthesis-independent manner. It comprises three identified subunits, HIRA, UBN1 and CABIN1, however the functional oligomerization state of the complex has not been investigated. Here we use biochemical and crystallographic analysis to show that the HIRA subunit forms a stable homotrimer that binds two subunits of CABIN1 in vitro. A HIRA mutant that is defective in homotrimer formation interacts less efficiently with CABIN1, is not enriched at DNA damage sites upon UV irradiation and cannot rescue new H3.3 deposition in HIRA knockout cells. The structural homology with the homotrimeric replisome component Ctf4/AND-1 enables the drawing of parallels and discussion of the functional importance of the homotrimerization state of the HIRA subunit.

  • Organizational Affiliation

    Institut Curie, PSL Research University, CNRS, UMR3664, Equipe Labellisée Ligue contre le Cancer, F-75005, Paris, France.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Protein HIRA
A, B, C
380Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P54198 (Homo sapiens)
Explore P54198 
Go to UniProtKB:  P54198
PHAROS:  P54198
GTEx:  ENSG00000100084 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP54198
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.45 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.204 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 149.99α = 90
b = 86.8β = 102.49
c = 99.15γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
XSCALEdata scaling

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number

Revision History  (Full details and data files)

  • Version 1.0: 2018-06-20
    Type: Initial release
  • Version 1.1: 2018-06-27
    Changes: Data collection, Experimental preparation, Refinement description
  • Version 1.2: 2018-07-25
    Changes: Data collection, Database references
  • Version 1.3: 2018-08-22
    Changes: Data collection, Database references
  • Version 1.4: 2024-03-27
    Changes: Data collection, Database references