3A5T

Crystal structure of MafG-DNA complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.294 
  • R-Value Work: 0.261 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural Basis of Alternative DNA Recognition by Maf Transcription Factors

Kurokawa, H.Motohashi, H.Sueno, S.Kimura, M.Takagawa, H.Kanno, Y.Yamamoto, M.Tanaka, T.

(2009) Mol.Cell.Biol. 29: 6232-6244

  • DOI: 10.1128/MCB.00708-09

  • PubMed Abstract: 
  • Maf transcription factors constitute a family of the basic region-leucine zipper (bZip) factors and recognize unusually long DNA motifs (13 or 14 bp), termed the Maf recognition element (MARE). The MARE harbors extended GC sequences on each side of i ...

    Maf transcription factors constitute a family of the basic region-leucine zipper (bZip) factors and recognize unusually long DNA motifs (13 or 14 bp), termed the Maf recognition element (MARE). The MARE harbors extended GC sequences on each side of its core motif, which is similar to TRE or CRE (7 or 8 bp) recognized by the AP1 and CREB/ATF families, respectively. To ascertain the structural basis governing the acquirement of such unique DNA recognition, we determined the crystal structure of the MafG-DNA complex. Each MafG monomer consists of three helices in which the carboxyl-terminal long helix organizes one DNA-contacting element and one coiled-coil dimer formation element. To our surprise, two well-conserved residues, Arg57 and Asn61 in the basic region, play critical roles in Maf-specific DNA recognition. These two residues show unique side-chain orientations and interact directly with the extended GC bases. Maf-specific residues in the amino-terminal and basic regions appear to indirectly stabilize MARE recognition through DNA backbone phosphate interactions. This study revealed an alternative DNA recognition mechanism of the bZip factors that bestows specific target gene profiles upon Maf homodimers or Maf-containing heterodimers.


    Organizational Affiliation

    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan. hkuro@m.tains.tohoku.ac.jp




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Transcription factor MafG
A, B
107Mus musculusMutation(s): 0 
Gene Names: Mafg
Find proteins for O54790 (Mus musculus)
Go to UniProtKB:  O54790
Entity ID: 2
MoleculeChainsLengthOrganism
5'-D(*CP*TP*GP*AP*TP*GP*AP*GP*TP*CP*AP*GP*CP*AP*C)-3'C15N/A
Entity ID: 3
MoleculeChainsLengthOrganism
5'-D(*GP*TP*GP*CP*TP*GP*AP*CP*TP*CP*AP*TP*CP*AP*G)-3'D15N/A
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG

Download SDF File 
Download CCD File 
C
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.294 
  • R-Value Work: 0.261 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 40.364α = 90.00
b = 185.243β = 90.00
c = 230.263γ = 90.00
Software Package:
Software NamePurpose
ADSCdata collection
HKL-2000data scaling
HKL-2000data reduction
CNSrefinement
SHELXDEphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-10-13
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance