2FF0

Solution Structure of Steroidogenic Factor 1 DNA Binding Domain Bound to its Target Sequence in the Inhibin alpha-subunit Promoter


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 16 
  • Selection Criteria: lowest restraint energies, restraint violations, and RMS deviations from ideal covalent geometry 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Sequence-specific deoxyribonucleic Acid (DNA) recognition by steroidogenic factor 1: a helix at the carboxy terminus of the DNA binding domain is necessary for complex stability.

Little, T.H.Zhang, Y.Matulis, C.K.Weck, J.Zhang, Z.Ramachandran, A.Mayo, K.E.Radhakrishnan, I.

(2006) Mol.Endocrinol. 20: 831-843

  • DOI: 10.1210/me.2005-0384

  • PubMed Abstract: 
  • Steroidogenic factor 1 (SF1) is a member of the NR5A subfamily of nuclear hormone receptors and is considered a master regulator of reproduction because it regulates a number of genes encoding reproductive hormones and enzymes involved in steroid hor ...

    Steroidogenic factor 1 (SF1) is a member of the NR5A subfamily of nuclear hormone receptors and is considered a master regulator of reproduction because it regulates a number of genes encoding reproductive hormones and enzymes involved in steroid hormone biosynthesis. Like other NR5A members, SF1 harbors a highly conserved approximately 30-residue segment called the FTZ-F1 box C-terminal to the core DNA binding domain (DBD) common to all nuclear receptors and binds to 9-bp DNA sequences as a monomer. Here we describe the solution structure of the SF1 DBD in complex with an atypical sequence in the proximal promoter region of the inhibin-alpha gene that encodes a subunit of a reproductive hormone. SF1 forms a specific complex with the DNA through a bipartite motif binding to the major and minor grooves through the core DBD and the N-terminal segment of the FTZ-F1 box, respectively, in a manner previously described for two other monomeric receptors, nerve growth factor-induced-B and estrogen-related receptor 2. However, unlike these receptors, SF1 harbors a helix in the C-terminal segment of the FTZ-F1 box that interacts with both the core DBD and DNA and serves as an important determinant of stability of the complex. We propose that the FTZ-F1 helix along with the core DBD serves as a platform for interactions with coactivators and other DNA-bound factors in the vicinity.


    Organizational Affiliation

    Department of Biochemistry, Molecular Biology, and Cell Biology, Northwestern University, Evanston, Illinois 60208-3500, USA.




Macromolecules

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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Steroidogenic factor 1
A
102Mus musculusMutation(s): 0 
Gene Names: Nr5a1 (Ftzf1)
Find proteins for P33242 (Mus musculus)
Go to UniProtKB:  P33242
Entity ID: 1
MoleculeChainsLengthOrganism
GGCTCAGGGCCACAGB15N/A
Entity ID: 2
MoleculeChainsLengthOrganism
CTGTGGCCCTGAGCCC15N/A
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 16 
  • Selection Criteria: lowest restraint energies, restraint violations, and RMS deviations from ideal covalent geometry 
  • Olderado: 2FF0 Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-04-11
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance