3G3Z image
Entry Detail
PDB ID:
3G3Z
Keywords:
TRANSCRIPTION
Title:
The structure of NMB1585, a MarR family regulator from Neisseria meningitidis
Biological Source:
Source Organism:
Neisseria meningitidis serogroup B
Host Organism:
Escherichia coli
PDB Version:
Deposition Date:
2009-02-03
Release Date:
2009-04-14
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.10 Å
R-Value Free:
0.26
R-Value Work:
0.20
R-Value Observed:
0.20
Space Group:
P 1 21 1
3G3Z validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Description:Transcriptional regulator, MarR family
Chain IDs:A, B
Chain Length:145
Number of Molecules:2
Biological Source:Neisseria meningitidis serogroup B
UniProt ID:Q9JYH5 Pfam ID:PF12802
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
MSE A MET SELENOMETHIONINE
Primary Citation
The structure of NMB1585, a MarR-family regulator from Neisseria meningitidis
Acta Crystallogr.,Sect.F 65 204 209 (2009)
PMID: 19255465 DOI: 10.1107/S174430910900414X

Abstact

The structure of the MarR-family transcription factor NMB1585 from Neisseria meningitidis has been solved using data extending to a resolution of 2.1 A. Overall, the dimeric structure resembles those of other MarR proteins, with each subunit comprising a winged helix-turn-helix (wHtH) domain connected to an alpha-helical dimerization domain. The spacing of the recognition helices of the wHtH domain indicates that NMB1585 is pre-configured for DNA binding, with a putative inducer pocket that is largely occluded by the side chains of two aromatic residues (Tyr29 and Trp53). NMB1585 was shown to bind to its own promoter region in a gel-shift assay, indicating that the protein acts as an auto-repressor.

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Primary Citation of related structures
3G3Z