2UZK

Crystal structure of the human FOXO3a-DBD bound to DNA

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.242 
  • R-Value Observed: 0.242 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history. 


Literature

Crystal Structure of the Human Foxo3A-Dbd/DNA Complex Suggests the Effects of Post-Translational Modification.

Tsai, K.-L., Sun, Y.-J., Huang, C.-Y., Yang, J.-Y., Hung, M.-C., Hsiao, C.-D.

(2007) Nucleic Acids Res 35: 6984

  • DOI: 10.1093/nar/gkm703
  • Primary Citation of Related Structures:  
    2UZK

  • PubMed Abstract: 

    • FOXO3a is a transcription factor of the FOXO family. The FOXO proteins participate in multiple signaling pathways, and their transcriptional activity is regulated by several post-translational mechanisms, including phosphorylation, acetylation and ubiquitination ...

    FOXO3a is a transcription factor of the FOXO family. The FOXO proteins participate in multiple signaling pathways, and their transcriptional activity is regulated by several post-translational mechanisms, including phosphorylation, acetylation and ubiquitination. Because these post-translational modification sites are located within the C-terminal basic region of the FOXO DNA-binding domain (FOXO-DBD), it is possible that these post-translational modifications could alter the DNA-binding characteristics. To understand how FOXO mediate transcriptional activity, we report here the 2.7 A crystal structure of the DNA-binding domain of FOXO3a (FOXO3a-DBD) bound to a 13-bp DNA duplex containing a FOXO consensus binding sequence (GTAAACA). Based on a unique structural feature in the C-terminal region and results from biochemical and mutational studies, our studies may explain how FOXO-DBD C-terminal phosphorylation by protein kinase B (PKB) or acetylation by cAMP-response element binding protein (CBP) can attenuate the DNA-binding activity and thereby reduce transcriptional activity of FOXO proteins. In addition, we demonstrate that the methyl groups of specific thymine bases within the consensus sequence are important for FOXO3a-DBD recognition of the consensus binding site.

    Organizational Affiliation: 

    Institute of Molecular Biology, Academia Sinica, Taipei, Taiwan.



Macromolecules

Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
FORKHEAD BOX PROTEIN O3A A, C97Homo sapiensMutation(s): 0 
Gene Names: FOXO3, FKHRL1, FOXO3A
Find proteins for O43524 (Homo sapiens)
Explore O43524 
Go to UniProtKB:  O43524
NIH Common Fund Data Resources
PHAROS:  O43524
GTEx:  ENSG00000118689
Protein Feature View
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  • Reference Sequence
  • Find similar nucleic acids by:  Sequence   |   Structure
    • Entity ID: 2
    MoleculeChainsLengthOrganismImage
    5'-D(*CP*TP*AP*TP*GP*TP*AP*AP*AP*CP*AP*AP*C)-3'B, D13Homo sapiens
    • Find similar nucleic acids by:  Sequence   |   Structure
      • Entity ID: 3
      MoleculeChainsLengthOrganismImage
      5'-D(*GP*TP*TP*GP*TP*TP*TP*AP*CP*AP*TP*AP*G)-3'E, F13Homo sapiens
      Experimental Data & Validation

      Experimental Data

      • Method: X-RAY DIFFRACTION
      • Resolution: 2.70 Å
      • R-Value Free: 0.266 
      • R-Value Work: 0.242 
      • R-Value Observed: 0.242 
      • Space Group: P 61
      Unit Cell:
      Length ( Å )Angle ( ˚ )
      a = 41.964α = 90
      b = 41.964β = 90
      c = 354.817γ = 120
      Software Package:
      Software NamePurpose
      CNSrefinement
      HKL-2000data reduction
      HKL-2000data scaling
      MOLREPphasing

      Structure Validation

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      View more in-depth experimental data

      Entry History 

      Deposition Data

      Revision History  (Full details and data files)

      • Version 1.0: 2008-05-13
        Type: Initial release
      • Version 1.1: 2013-05-22
        Changes: Database references, Derived calculations, Non-polymer description, Other, Refinement description, Source and taxonomy, Structure summary, Version format compliance