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: 11876636
- PubMed Abstract:
- 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
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.
Department of Biochemistry and Molecular Biology, College of Medicine, University of Illinois at Chicago, 1835 West Polk Street, Chicago, Illinois 60612-4316, USA.