3F5C image
Deposition Date 2008-11-03
Release Date 2008-12-23
Last Version Date 2023-09-06
Entry Detail
PDB ID:
3F5C
Keywords:
TRANSCRIPTION
Title:
Structure of Dax-1:LRH-1 complex
Biological Source:
Source Organism:
Mus musculus (Taxon ID: 10090)
Host Organism:
Escherichia coli
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
3.00 Å
R-Value Free:
0.27
R-Value Work:
0.22
R-Value Observed:
0.22
Space Group:
P 43
3F5C validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Nuclear receptor subfamily 5 group A member 2
Gene (Uniprot):Nr5a2
Mutations:I525L
Chain IDs:A
Chain Length:248
Number of Molecules:1
Biological Source:Mus musculus
UniProt ID:P45448 Pfam ID:PF00104
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Nuclear receptor subfamily 0 group B member 1
Gene (Uniprot):Nr0b1
Chain IDs:B, C
Chain Length:268
Number of Molecules:2
Biological Source:Mus musculus
UniProt ID:Q61066 Pfam ID:PF14046, PF00104
Ligand Molecules
NA
Primary Citation
The structure of corepressor Dax-1 bound to its target nuclear receptor LRH-1.
Proc.Natl.Acad.Sci.USA 105 18390 18395 (2008)
PMID: 19015525 DOI: 10.1073/pnas.0808936105

Abstact

The Dax-1 protein is an enigmatic nuclear receptor that lacks an expected DNA binding domain, yet functions as a potent corepressor of nuclear receptors. Here we report the structure of Dax-1 bound to one of its targets, liver receptor homolog 1 (LRH-1). Unexpectedly, Dax-1 binds to LRH-1 using a new module, a repressor helix built from a family conserved sequence motif, PCFXXLP. Mutations in this repressor helix that are linked with human endocrine disorders dissociate the complex and attenuate Dax-1 function. The structure of the Dax-1:LRH-1 complex provides the molecular mechanism for the function of Dax-1 as a potent transcriptional repressor.

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Primary Citation of related structures
3F5C