3COA

Crystal Structure of FoxO1 DBD Bound to IRE DNA

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.216 

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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: https://doi.org/10.1016/j.str.2008.06.013
  • Primary Citation of Related Structures:  
    3CO6, 3CO7, 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-mediated transcription ...

    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

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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Forkhead box protein O1E [auth C],
F		117Homo sapiensMutation(s): 0 
Gene Names: FOXO1, FKHR, FOXO1A
UniProt & NIH Common Fund Data Resources
Find proteins for Q12778 (Homo sapiens)
Explore Q12778 
Go to UniProtKB:  Q12778
PHAROS:  Q12778
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ12778
Protein Feature View
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  • Reference Sequence

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Entity ID: 1
MoleculeChainsLengthOrganismImage
DNA (5'-D(*DTP*DGP*DGP*DTP*DTP*DTP*DGP*DTP*DTP*DTP*DTP*DGP*DCP*DTP*DTP*DG)-3')A,
C [auth D]		16N/A
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsLengthOrganismImage
DNA (5'-D(*DCP*DAP*DAP*DGP*DCP*DAP*DAP*DAP*DAP*DCP*DAP*DAP*DAP*DCP*DCP*DA)-3')B,
D [auth E]		16N/A
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA
Download Ideal Coordinates CCD File 
G [auth C],
H [auth F]		CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.216 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 76.062α = 90
b = 102.432β = 90
c = 65.446γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
CNSrefinement
PDB_EXTRACTdata extraction
SOLVEphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

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