4EGC

Crystal Structure of MBP-fused Human Six1 Bound to Human Eya2 Eya Domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.994 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.184 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structure-function analyses of the human SIX1-EYA2 complex reveal insights into metastasis and BOR syndrome.

Patrick, A.N.Cabrera, J.H.Smith, A.L.Chen, X.S.Ford, H.L.Zhao, R.

(2013) Nat.Struct.Mol.Biol. 20: 447-453

  • DOI: 10.1038/nsmb.2505

  • PubMed Abstract: 
  • SIX1 interacts with EYA to form a bipartite transcription factor essential for mammalian development. Loss of function of this complex causes branchio-oto-renal (BOR) syndrome, whereas re-expression of SIX1 or EYA promotes metastasis. Here we describ ...

    SIX1 interacts with EYA to form a bipartite transcription factor essential for mammalian development. Loss of function of this complex causes branchio-oto-renal (BOR) syndrome, whereas re-expression of SIX1 or EYA promotes metastasis. Here we describe the 2.0-Å structure of SIX1 bound to EYA2, which suggests a new DNA-binding mechanism for SIX1 and provides a rationale for the effect of BOR syndrome mutations. The structure also reveals that SIX1 uses predominantly a single helix to interact with EYA. Substitution of a single amino acid in this helix is sufficient to disrupt SIX1-EYA interaction, SIX1-mediated epithelial-mesenchymal transition and metastasis in mouse models. Given that SIX1 and EYA are overexpressed in many tumor types, our data indicate that targeting the SIX1-EYA complex may be a potent approach to inhibit tumor progression in multiple cancer types.


    Organizational Affiliation

    Department of Obstetrics and Gynecology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Maltose-binding periplasmic protein, Homeobox protein SIX1 chimera
A
559Homo sapiensEscherichia coli (strain K12)
This entity is chimeric
Gene Names: SIX1, malE
Find proteins for Q15475 (Homo sapiens)
Go to Gene View: SIX1
Go to UniProtKB:  Q15475
Find proteins for P0AEX9 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AEX9
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Eyes absent homolog 2
B
294Homo sapiensGene Names: EYA2 (EAB1)
EC: 3.1.3.48
Find proteins for O00167 (Homo sapiens)
Go to Gene View: EYA2
Go to UniProtKB:  O00167
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MAL
Query on MAL

Download SDF File 
Download CCD File 
A
MALTOSE
C12 H22 O11
GUBGYTABKSRVRQ-ASMJPISFSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.994 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.184 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 123.207α = 90.00
b = 150.180β = 90.00
c = 53.921γ = 90.00
Software Package:
Software NamePurpose
MLPHAREphasing
SCALEPACKdata scaling
HKL-3000data collection
DENZOdata reduction
PHENIXrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-02-27
    Type: Initial release
  • Version 1.1: 2013-03-20
    Type: Database references
  • Version 1.2: 2013-04-17
    Type: Database references
  • Version 1.3: 2017-07-26
    Type: Refinement description, Source and taxonomy