3A5T

Crystal structure of MafG-DNA complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 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
  • Primary Citation of Related Structures:  
    3A5T

  • 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 its core motif, which is similar to TRE or CRE (7 or 8 bp) recognized by the AP1 and CREB/ATF families, respectively ...

    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

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Transcription factor MafGA, B107Mus musculusMutation(s): 0 
Gene Names: Mafg
UniProt
Find proteins for O54790 (Mus musculus)
Explore O54790 
Go to UniProtKB:  O54790
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO54790
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsLengthOrganismImage
5'-D(*CP*TP*GP*AP*TP*GP*AP*GP*TP*CP*AP*GP*CP*AP*C)-3'C 15N/A
Protein Feature View
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  • Reference Sequence

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Entity ID: 3
MoleculeChainsLengthOrganismImage
5'-D(*GP*TP*GP*CP*TP*GP*AP*CP*TP*CP*AP*TP*CP*AP*G)-3'D 15N/A
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG

Download Ideal Coordinates CCD File 
E [auth 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: 2.80 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
b = 185.243β = 90
c = 230.263γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
SHELXDEphasing
CNSrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

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