3CO7

Crystal Structure of FoxO1 DBD Bound to DBE2 DNA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.91 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.267 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural Basis for DNA Recognition by FoxO1 and Its Regulation by Posttranslational Modification.

Brent, M.M.Anand, R.Marmorstein, R.

(2008) Structure 16: 1407-1416

  • DOI: 10.1016/j.str.2008.06.013
  • Primary Citation of Related Structures:  3CO6, 3COA

  • PubMed Abstract: 
  • FoxO transcription factors regulate the transcription of genes that control metabolism, cellular proliferation, stress tolerance, and possibly life span. A number of posttranslational modifications within the forkhead DNA-binding domain regulate FoxO ...

    FoxO transcription factors regulate the transcription of genes that control metabolism, cellular proliferation, stress tolerance, and possibly life span. A number of posttranslational modifications within the forkhead DNA-binding domain regulate FoxO-mediated transcription. We describe the crystal structures of FoxO1 bound to three different DNA elements and measure the change in FoxO1-DNA affinity with acetylation and phosphorylation. The structures reveal additional contacts and increased DNA distortion for the highest affinity DNA site. The flexible wing 2 region of the forkhead domain was not observed in the structures but is necessary for DNA binding, and we show that p300 acetylation in wing 2 reduces DNA affinity. We also show that MST1 phosphorylation of FoxO1 prevents high-affinity DNA binding. The observation that FoxO-DNA affinity varies between response elements and with posttranslational modifications suggests that modulation of FoxO-DNA affinity is an important component of FoxO regulation in health and misregulation in disease.


    Organizational Affiliation

    The Wistar Institute, University of Pennsylvania, Philadelphia, PA 19104, USA; The Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Forkhead box protein O1
C, F
117Homo sapiensGene Names: FOXO1 (FKHR, FOXO1A)
Find proteins for Q12778 (Homo sapiens)
Go to Gene View: FOXO1
Go to UniProtKB:  Q12778
Entity ID: 1
MoleculeChainsLengthOrganism
DNA (5'-D(*DTP*DCP*DTP*DTP*DGP*DTP*DTP*DTP*DAP*DCP*DAP*DTP*DTP*DTP*DTP*DG)-3')A,D16N/A
Entity ID: 2
MoleculeChainsLengthOrganism
DNA (5'-D(*DCP*DAP*DAP*DAP*DAP*DTP*DGP*DTP*DAP*DAP*DAP*DCP*DAP*DAP*DGP*DA)-3')B,E16N/A
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.91 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.267 
  • Space Group: P 32
Unit Cell:
Length (Å)Angle (°)
a = 99.641α = 90.00
b = 99.641β = 90.00
c = 98.468γ = 120.00
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
CNSrefinement
PHASERphasing
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-09-16
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-10-25
    Type: Refinement description