1HW2

FADR-DNA COMPLEX: TRANSCRIPTIONAL CONTROL OF FATTY ACID METABOLISM IN ECHERICHIA COLI


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.25 Å
  • R-Value Free: 0.278 
  • R-Value Work: 0.235 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The FadR.DNA complex. Transcriptional control of fatty acid metabolism in Escherichia coli.

Xu, Y.Heath, R.J.Li, Z.Rock, C.O.White, S.W.

(2001) J.Biol.Chem. 276: 17373-17379

  • DOI: 10.1074/jbc.M100195200
  • Primary Citation of Related Structures:  1HW1

  • PubMed Abstract: 
  • In Escherichia coli, the expression of fatty acid metabolic genes is controlled by the transcription factor, FadR. The affinity of FadR for DNA is controlled by long chain acyl-CoA molecules, which bind to the protein and modulate gene expression. Th ...

    In Escherichia coli, the expression of fatty acid metabolic genes is controlled by the transcription factor, FadR. The affinity of FadR for DNA is controlled by long chain acyl-CoA molecules, which bind to the protein and modulate gene expression. The crystal structure of FadR reveals a two domain dimeric molecule where the N-terminal domains bind DNA, and the C-terminal domains bind acyl-CoA. The DNA binding domain has a winged-helix motif, and the C-terminal domain resembles the sensor domain of the Tet repressor. The FadR.DNA complex reveals how the protein interacts with DNA and specifically recognizes a palindromic sequence. Structural and functional similarities to the Tet repressor and the BmrR transcription factors suggest how the binding of the acyl-CoA effector molecule to the C-terminal domain may affect the DNA binding affinity of the N-terminal domain. We suggest that the binding of acyl-CoA disrupts a buried network of charged and polar residues in the C-terminal domain, and the resulting conformational change is transmitted to the N-terminal domain via a domain-spanning alpha-helix.


    Organizational Affiliation

    Department of Structural Biology, St Jude Children's Research Hospital, Memphis, Tennessee 38105, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
FATTY ACID METABOLISM REGULATOR PROTEIN
A, B
239Escherichia coli (strain K12)Gene Names: fadR (oleR, thdB)
Find proteins for P0A8V6 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A8V6
Entity ID: 1
MoleculeChainsLengthOrganism
5'-D(*CP*GP*AP*TP*CP*TP*GP*GP*TP*CP*CP*GP*AP*CP*CP*AP*GP*AP*TP*GP*CP*T)-3'D22N/A
Entity ID: 2
MoleculeChainsLengthOrganism
5'-D(*G*CP*AP*TP*CP*TP*GP*GP*TP*CP*GP*GP*AP*CP*CP*AP*GP*AP*TP*CP*GP*A)-3'E22N/A
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG

Download SDF File 
Download CCD File 
E
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.25 Å
  • R-Value Free: 0.278 
  • R-Value Work: 0.235 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 83.733α = 90.00
b = 110.148β = 90.00
c = 130.281γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
DENZOdata reduction
AMoREphasing
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-01-22
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance