3QLC

Complex structure of ATRX ADD domain bound to unmodified H3 1-15 peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.198 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

ATRX ADD domain links an atypical histone methylation recognition mechanism to human mental-retardation syndrome

Iwase, S.Xiang, B.Ghosh, S.Ren, T.Lewis, P.W.Cochrane, J.C.Allis, C.D.Picketts, D.J.Patel, D.J.Li, H.Shi, Y.

(2011) Nat Struct Mol Biol 18: 769-776

  • DOI: https://doi.org/10.1038/nsmb.2062
  • Primary Citation of Related Structures:  
    3QL9, 3QLA, 3QLC, 3QLN

  • PubMed Abstract: 

    ATR-X (alpha-thalassemia/mental retardation, X-linked) syndrome is a human congenital disorder that causes severe intellectual disabilities. Mutations in the ATRX gene, which encodes an ATP-dependent chromatin-remodeler, are responsible for the syndrome. Approximately 50% of the missense mutations in affected persons are clustered in a cysteine-rich domain termed ADD (ATRX-DNMT3-DNMT3L, ADD(ATRX)), whose function has remained elusive. Here we identify ADD(ATRX) as a previously unknown histone H3-binding module, whose binding is promoted by lysine 9 trimethylation (H3K9me3) but inhibited by lysine 4 trimethylation (H3K4me3). The cocrystal structure of ADD(ATRX) bound to H3(1-15)K9me3 peptide reveals an atypical composite H3K9me3-binding pocket, which is distinct from the conventional trimethyllysine-binding aromatic cage. Notably, H3K9me3-pocket mutants and ATR-X syndrome mutants are defective in both H3K9me3 binding and localization at pericentromeric heterochromatin; thus, we have discovered a unique histone-recognition mechanism underlying the ATR-X etiology.


  • Organizational Affiliation

    Division of Newborn Medicine, Department of Medicine, Children's Hospital Boston, Harvard Medical School, Boston, Massachusetts, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Transcriptional regulator ATRX
A, B
129Homo sapiensMutation(s): 2 
Gene Names: ATRXRAD54LXH2
EC: 3.6.4.12
UniProt & NIH Common Fund Data Resources
Find proteins for P46100 (Homo sapiens)
Explore P46100 
Go to UniProtKB:  P46100
PHAROS:  P46100
GTEx:  ENSG00000085224 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP46100
Sequence Annotations
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  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
peptide of Histone H3.3
C, D
15Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P84243 (Homo sapiens)
Explore P84243 
Go to UniProtKB:  P84243
PHAROS:  P84243
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP84243
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.198 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 80.607α = 90
b = 80.607β = 90
c = 136.173γ = 120
Software Package:
Software NamePurpose
SCALEPACKdata scaling
MOLREPphasing
PHENIXrefinement
PDB_EXTRACTdata extraction
ADSCdata collection
DENZOdata reduction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-06-15
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2014-03-05
    Changes: Database references
  • Version 1.3: 2023-11-01
    Changes: Data collection, Database references, Derived calculations, Refinement description