5VPB

Transcription factor FosB/JunD bZIP domain in its oxidized form, type-I crystal


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.691 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.238 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Activator Protein-1: redox switch controlling structure and DNA-binding.

Yin, Z.Machius, M.Nestler, E.J.Rudenko, G.

(2017) Nucleic Acids Res. 45: 11425-11436

  • DOI: 10.1093/nar/gkx795
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The transcription factor, activator protein-1 (AP-1), binds to cognate DNA under redox control; yet, the underlying mechanism has remained enigmatic. A series of crystal structures of the AP-1 FosB/JunD bZIP domains reveal ordered DNA-binding regions ...

    The transcription factor, activator protein-1 (AP-1), binds to cognate DNA under redox control; yet, the underlying mechanism has remained enigmatic. A series of crystal structures of the AP-1 FosB/JunD bZIP domains reveal ordered DNA-binding regions in both FosB and JunD even in absence DNA. However, while JunD is competent to bind DNA, the FosB bZIP domain must undergo a large conformational rearrangement that is controlled by a 'redox switch' centered on an inter-molecular disulfide bond. Solution studies confirm that FosB/JunD cannot undergo structural transition and bind DNA when the redox-switch is in the 'OFF' state, and show that the mid-point redox potential of the redox switch affords it sensitivity to cellular redox homeostasis. The molecular and structural studies presented here thus reveal the mechanism underlying redox-regulation of AP-1 Fos/Jun transcription factors and provide structural insight for therapeutic interventions targeting AP-1 proteins.


    Organizational Affiliation

    Department of Pharmacology and Toxicology, and the Sealy Center for Structural Biology, University of Texas Medical Branch, Galveston, TX 77555, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Protein fosB
C, A
68Homo sapiensMutation(s): 0 
Gene Names: FOSB (G0S3)
Find proteins for P53539 (Homo sapiens)
Go to Gene View: FOSB
Go to UniProtKB:  P53539
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Transcription factor jun-D
D, B
68Homo sapiensMutation(s): 0 
Gene Names: JUND
Find proteins for P17535 (Homo sapiens)
Go to Gene View: JUND
Go to UniProtKB:  P17535
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
A, B, D
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.691 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.238 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 92.825α = 90.00
b = 99.261β = 109.40
c = 49.860γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
PHENIXrefinement
DENZOdata reduction
PHASERphasing
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute on Drug AbuseUnited StatesR01 DA040621
Brain and Behavior Research FoundationUnited States--

Revision History 

  • Version 1.0: 2017-09-06
    Type: Initial release
  • Version 1.1: 2017-10-18
    Type: Database references
  • Version 1.2: 2017-11-15
    Type: Database references