4AUW

CRYSTAL STRUCTURE OF THE BZIP HOMODIMERIC MAFB IN COMPLEX WITH THE C- MARE BINDING SITE

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.255 
  • R-Value Observed: 0.257 

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Literature

Expression, purification, crystallization and preliminary crystallographic analysis of the mouse transcription factor MafB in complex with its DNA-recognition motif Cmare

Textor, L.C., Wilmanns, M., Holton, S.J.

(2007) Acta Crystallogr Sect F Struct Biol Cryst Commun 63: 657-661

  • DOI: https://doi.org/10.1107/S1744309107031260
  • Primary Citation of Related Structures:  
    4AUW

  • PubMed Abstract: 

    The MafB transcription factor (residues 211-305) has been overexpressed in and purified from Escherichia coli. A protein-DNA complex between the MafB homodimer and the 21 bp Maf-recognition sequence known as Cmare has been successfully reconstituted in vitro and subsequently crystallized. The diffraction properties of the protein-DNA complex crystals were improved using a combination of protein-construct boundary optimization and targeted mutagenesis to promote crystal lattice stability. Both native and mercury-derivatized crystals have been prepared using these optimized conditions. The crystals belong to space group P4(1)2(1)2 or P4(3)2(1)2, with unit-cell parameters a = b = 94.8, c = 197.9 A. An anomalous difference Patterson map computed using data collected from crystals grown in the presence of HgCl(2) reveals four peaks. This corresponds to two copies of the protein-DNA complex in the asymmetric unit, with a solvent content of 62% and a Matthews coefficient of 3.22 A(3) Da(-1).

    • Organizational Affiliation: 

    EMBL DESY, Notkestrasse 85, D-22603 Hamburg, Germany.


Macromolecules

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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
TRANSCRIPTION FACTOR MAFB
A, B, E, F
96Mus musculusMutation(s): 1 
UniProt
Find proteins for P54841 (Mus musculus)
Explore P54841 
Go to UniProtKB:  P54841
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP54841
Sequence Annotations
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  • Reference Sequence

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Entity ID: 2
MoleculeChains LengthOrganismImage
C-MARE BINDING SITE (5'-D(*AP*TP*AP*AP*TP*GP*CP*TP* GP*AP*CP*GP*TP*CP*AP*GP*CP*AP*AP*TP*T)-3')
C, H
21synthetic construct
Sequence Annotations
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  • Reference Sequence

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Entity ID: 3
MoleculeChains LengthOrganismImage
C-MARE BINDING SITE (5'-D(*AP*TP*AP*AP*TP*GP*CP*TP* GP*AP*CP*GP*TP*CP*AP*GP*CP*AP*AP*TP*T)-3')
D, G
21synthetic construct
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.255 
  • R-Value Observed: 0.257 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 94.964α = 90
b = 94.964β = 90
c = 200.111γ = 90
Software Package:
Software NamePurpose
REFMACrefinement

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-06-05
    Type: Initial release
  • Version 1.1: 2018-05-02
    Changes: Data collection, Database references