4JOL

Complex structure of AML1-ETO NHR2 domain with HEB fragment


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.91 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.211 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

A stable transcription factor complex nucleated by oligomeric AML1-ETO controls leukaemogenesis.

Sun, X.J.Wang, Z.Wang, L.Jiang, Y.Kost, N.Soong, T.D.Chen, W.Y.Tang, Z.Nakadai, T.Elemento, O.Fischle, W.Melnick, A.Patel, D.J.Nimer, S.D.Roeder, R.G.

(2013) Nature 500: 93-97

  • DOI: 10.1038/nature12287
  • Primary Citation of Related Structures:  
    4JOL

  • PubMed Abstract: 
  • Transcription factors are frequently altered in leukaemia through chromosomal translocation, mutation or aberrant expression. AML1-ETO, a fusion protein generated by the t(8;21) translocation in acute myeloid leukaemia, is a transcription factor impl ...

    Transcription factors are frequently altered in leukaemia through chromosomal translocation, mutation or aberrant expression. AML1-ETO, a fusion protein generated by the t(8;21) translocation in acute myeloid leukaemia, is a transcription factor implicated in both gene repression and activation. AML1-ETO oligomerization, mediated by the NHR2 domain, is critical for leukaemogenesis, making it important to identify co-regulatory factors that 'read' the NHR2 oligomerization and contribute to leukaemogenesis. Here we show that, in human leukaemic cells, AML1-ETO resides in and functions through a stable AML1-ETO-containing transcription factor complex (AETFC) that contains several haematopoietic transcription (co)factors. These AETFC components stabilize the complex through multivalent interactions, provide multiple DNA-binding domains for diverse target genes, co-localize genome wide, cooperatively regulate gene expression, and contribute to leukaemogenesis. Within the AETFC complex, AML1-ETO oligomerization is required for a specific interaction between the oligomerized NHR2 domain and a novel NHR2-binding (N2B) motif in E proteins. Crystallographic analysis of the NHR2-N2B complex reveals a unique interaction pattern in which an N2B peptide makes direct contact with side chains of two NHR2 domains as a dimer, providing a novel model of how dimeric/oligomeric transcription factors create a new protein-binding interface through dimerization/oligomerization. Intriguingly, disruption of this interaction by point mutations abrogates AML1-ETO-induced haematopoietic stem/progenitor cell self-renewal and leukaemogenesis. These results reveal new mechanisms of action of AML1-ETO, and provide a potential therapeutic target in t(8;21)-positive acute myeloid leukaemia.


    Organizational Affiliation

    Laboratory of Biochemistry and Molecular Biology, The Rockefeller University, New York, New York 10065, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Protein CBFA2T1ABCD64Homo sapiensMutation(s): 0 
Gene Names: RUNX1T1AML1T1CBFA2T1CDRETOMTG8ZMYND2
Find proteins for Q06455 (Homo sapiens)
Explore Q06455 
Go to UniProtKB:  Q06455
NIH Common Fund Data Resources
PHAROS  Q06455
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Transcription factor 12EFGH25Homo sapiensMutation(s): 0 
Gene Names: TCF12BHLHB20HEBHTF4
Find proteins for Q99081 (Homo sapiens)
Explore Q99081 
Go to UniProtKB:  Q99081
NIH Common Fund Data Resources
PHAROS  Q99081
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.91 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.211 
  • Space Group: P 32
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 139.485α = 90
b = 139.485β = 90
c = 43.169γ = 120
Software Package:
Software NamePurpose
MAR345dtbdata collection
PHENIXmodel building
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2013-03-18 
  • Released Date: 2013-06-26 
  • Deposition Author(s): Wang, Z., Patel, D.J.

Revision History 

  • Version 1.0: 2013-06-26
    Type: Initial release
  • Version 1.1: 2013-07-24
    Changes: Database references
  • Version 1.2: 2013-08-07
    Changes: Database references
  • Version 1.3: 2013-08-28
    Changes: Database references