4JOL

Complex structure of AML1-ETO NHR2 domain with HEB fragment


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.906 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.207 

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

  • 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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Protein CBFA2T1
A, B, C, D
64Homo sapiensMutation(s): 0 
Gene Names: RUNX1T1 (AML1T1, CBFA2T1, CDR, ETO, MTG8, ZMYND2)
Find proteins for Q06455 (Homo sapiens)
Go to Gene View: RUNX1T1
Go to UniProtKB:  Q06455
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Transcription factor 12
E, F, G, H
25Homo sapiensMutation(s): 0 
Gene Names: TCF12 (BHLHB20, HEB, HTF4)
Find proteins for Q99081 (Homo sapiens)
Go to Gene View: TCF12
Go to UniProtKB:  Q99081
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.906 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.207 
  • Space Group: P 32
Unit Cell:
Length (Å)Angle (°)
a = 139.485α = 90.00
b = 139.485β = 90.00
c = 43.169γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data reduction
PHENIXmodel building
PHENIXrefinement
HKL-2000data scaling
PHENIXphasing
MAR345dtbdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



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
    Type: Database references
  • Version 1.2: 2013-08-07
    Type: Database references
  • Version 1.3: 2013-08-28
    Type: Database references