1KQ8

Solution Structure of Winged Helix Protein HFH-1


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure comparison of two conserved HNF-3/fkh proteins HFH-1 and genesis indicates the existence of folding differences in their complexes with a DNA binding sequence.

Sheng, W.Rance, M.Liao, X.

(2002) Biochemistry 41: 3286-3293


  • PubMed Abstract: 
  • The hepatocyte nuclear factor 3 (HNF-3)/fork head (fkh) family contains a large number of transcription factors that recognize divergent DNA sequences via a winged helix binding motif. HNF-3/fkh proteins show a broad profile of DNA sequence-specifici ...

    The hepatocyte nuclear factor 3 (HNF-3)/fork head (fkh) family contains a large number of transcription factors that recognize divergent DNA sequences via a winged helix binding motif. HNF-3/fkh proteins show a broad profile of DNA sequence-specificity in which one DNA sequence can be recognized by more than one HNF-3/fkh protein and each individual HNF-3/fkh protein has several DNA binding sequences. In this study, heteronuclear NMR methods were used to study the structures of the DNA binding domain of a conserved winged helix protein HFH-1 and its DNA complexes. The structural comparison of winged helix proteins HFH-1 and Genesis and their DNA complexes indicates that even two highly conserved HNF-3 family members can adopt different local structures when they contact an identical DNA binding sequence, while one of these two HNF-3 proteins seems to adopt only slightly different structures on different DNA binding sites.


    Related Citations: 
    • Structural changes in the region directly adjacent to the DNA-binding helix highlight a possible mechanism to explain the observed changes in the sequence-specific binding of winged helix proteins
      Marsden, I.,Jin, C.,Liao, X.
      (1998) J.Mol.Biol. 278: 293
    • Sequence specific collective motions in a winged helix DNA binding domain detected by 15N relaxation NMR
      Jin, C.,Marsden, I.,Chen, X.,Liao, X.
      (1998) Biochemistry 37: 6179


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, College of Medicine, University of Illinois at Chicago, 1835 West Polk Street, Chicago, Illinois 60612-4316, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HEPATOCYTE NUCLEAR FACTOR 3 FORKHEAD HOMOLOG 1
A
100Rattus norvegicusMutation(s): 0 
Gene Names: Foxq1 (Hfh1)
Find proteins for Q63244 (Rattus norvegicus)
Go to UniProtKB:  Q63244
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 
  • Olderado: 1KQ8 Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-01-22
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance