2UZK

Crystal structure of the human FOXO3a-DBD bound to DNA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.266 
  • R-Value Work: 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

  • 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 ub ...

    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: Sequence  |  Structure


Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
FORKHEAD BOX PROTEIN O3A
A, C
97Homo sapiensMutation(s): 0 
Gene Names: FOXO3 (FKHRL1, FOXO3A)
Find proteins for O43524 (Homo sapiens)
Go to Gene View: FOXO3
Go to UniProtKB:  O43524
Entity ID: 2
MoleculeChainsLengthOrganism
5'-D(*CP*TP*AP*TP*GP*TP*AP*AP*AP*CP*AP*AP*C)-3'B,D13Homo sapiens
Entity ID: 3
MoleculeChainsLengthOrganism
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: 2.7 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.242 
  • Space Group: P 61
Unit Cell:
Length (Å)Angle (°)
a = 41.964α = 90.00
b = 41.964β = 90.00
c = 354.817γ = 120.00
Software Package:
Software NamePurpose
CNSrefinement
HKL-2000data reduction
HKL-2000data scaling
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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