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Entry Detail
PDB ID:
4AUW
Keywords:
TRANSCRIPTION
Title:
CRYSTAL STRUCTURE OF THE BZIP HOMODIMERIC MAFB IN COMPLEX WITH THE C- MARE BINDING SITE
Biological Source:
Source Organism:
MUS MUSCULUS, SYNTHETIC CONSTRUCT
Host Organism:
ESCHERICHIA COLI
PDB Version:
Deposition Date:
2012-05-22
Release Date:
2013-06-05
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.90 Å
R-Value Free:
0.29
R-Value Work:
0.25
R-Value Observed:
0.25
Space Group:
P 43 21 2
4AUW validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Description:TRANSCRIPTION FACTOR MAFB
Mutations:YES
Chain IDs:A, B, E, F
Chain Length:96
Number of Molecules:4
Biological Source:MUS MUSCULUS
UniProt ID:P54841 Pfam ID:PF03131
Polymer Type:polydeoxyribonucleotide
Description: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')
Chain IDs:C, H
Chain Length:21
Number of Molecules:2
Biological Source:SYNTHETIC CONSTRUCT
Polymer Type:polydeoxyribonucleotide
Description: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')
Chain IDs:D, G
Chain Length:21
Number of Molecules:2
Biological Source:SYNTHETIC CONSTRUCT
Ligand Molecules
DTU
HG
Primary Citation
Expression, purification, crystallization and preliminary crystallographic analysis of the mouse transcription factor MafB in complex with its DNA-recognition motif Cmare
Acta Crystallogr Sect F Struct Biol Cryst Commun. 63 657 661 (2007)
PMID: 17671361 DOI: 10.1107/S1744309107031260

Abstact

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).

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Primary Citation of related structures
4AUW