3F5C

Structure of Dax-1:LRH-1 complex

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.224 

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This is version 1.3 of the entry. See complete history. 


Literature

The structure of corepressor Dax-1 bound to its target nuclear receptor LRH-1.

Sablin, E.P., Woods, A., Krylova, I.N., Hwang, P., Ingraham, H.A., Fletterick, R.J.

(2008) Proc Natl Acad Sci U S A 105: 18390-18395

  • DOI: 10.1073/pnas.0808936105
  • Primary Citation of Related Structures:  
    3F5C

  • PubMed Abstract: 

    • 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 ...

    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.

    Organizational Affiliation: 

    Department of Biochemistry and Biophysics, University of California, San Francisco, CA 94143, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Nuclear receptor subfamily 5 group A member 2A248Mus musculusMutation(s): 1 
Gene Names: Nr5a2, Lrh1
UniProt
Find proteins for P45448 (Mus musculus)
Explore P45448 
Go to UniProtKB:  P45448
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP45448
Protein Feature View
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  • Reference Sequence
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(by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Nuclear receptor subfamily 0 group B member 1B, C268Mus musculusMutation(s): 0 
Gene Names: Nr0b1, Ahch, Dax1
UniProt & NIH Common Fund Data Resources
Find proteins for Q61066 (Mus musculus)
Explore Q61066 
Go to UniProtKB:  Q61066
IMPC:  MGI:1352460
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ61066
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.224 
  • Space Group: P 43
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 103.355α = 90
b = 103.355β = 90
c = 117.455γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
CNSrefinement
ADSCdata collection
DENZOdata reduction
SCALEPACKdata scaling
CNSphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-12-23
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2019-07-24
    Changes: Data collection, Refinement description
  • Version 1.3: 2021-10-20
    Changes: Database references