Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 23.76 kDa 
• Atom Count: 1539 
• Modelled Residue Count: 201 
• Deposited Residue Count: 210 
• Unique protein chains: 1

2WUI

Crystal Structure of MexZ, a key repressor responsible for antibiotic resistance in Pseudomonas aeruginosa.

• PDB DOI: 10.2210/pdb2WUI/pdb

• Classification: TRANSCRIPTION
• Organism(s): Pseudomonas aeruginosa
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2009-10-05 Released: 2010-08-18 
• Deposition Author(s): Alguel, Y., Lu, D., Quade, N., Zhang, X.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.90 Å
• R-Value Free: 0.277 
• R-Value Work: 0.227 
• R-Value Observed: 0.229 

Literature

Crystal Structure of Mexz, a Key Repressor Responsible for Antibiotic Resistance in Pseudomonas Aeruginosa.

Alguel, Y., Lu, D., Quade, N., Sauter, S., Zhang, X.

(2010) J Struct Biol 172: 305

• PubMed: 20691272 
• DOI: 10.1016/j.jsb.2010.07.012
• Primary Citation of Related Structures:  
  2WUI


• PubMed Abstract: 
  

Pseudomonas aeruginosa is responsible for around 10% of all hospital-acquired infections and the single most important pathogen of cystic fibrosis lungs. P. aeruginosa has high intrinsic and acquired antibiotic resistance, due to the extrusion of antibiotics by multidrug efflux pumps. The gene regulator MexZ controls the expression of mexXY, the efflux pump responsible for resistance to many drugs that are used for treating CF patients. MexZ is shown to be the most frequently mutated gene in P. aeruginosa isolated from CF patient lungs, confirming its importance in multidrug resistance. Here we present the crystal structure of MexZ at 2.9Å. Combining the structural information with biochemical data on key mutants identified, we provide an explanation for the structural and functional consequences of these mutants. This work provides a framework for further characterisation of MexZ in order to fully understand its regulation and induction.

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Organizational Affiliation: 

Division of Molecular Biosciences and Centre for Structural Biology, Imperial College London, London SW7 2AZ, United Kingdom.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
TRANSCRIPTIONAL REGULATOR	A	210	Pseudomonas aeruginosa	Mutation(s): 0  Gene Names: amrR, ttgR_2, ALP65_02110, CAZ10_35075, CGU42_12670, E4V10_30070, IPC1295_28305, IPC614_24065, IPC90_12830, RW109_RW109_04030
UniProt
Find proteins for Q9RG61 (Pseudomonas aeruginosa) Explore Q9RG61  Go to UniProtKB:  Q9RG61

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.90 Å
• R-Value Free: 0.277 
• R-Value Work: 0.227 
• R-Value Observed: 0.229 
• Space Group: H 3 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 177.055	α = 90
b = 177.055	β = 90
c = 54.658	γ = 120

Software Package:

Software Name	Purpose
PHENIX	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2009-10-05 
• Released Date: 2010-08-18 
Deposition Author(s): Alguel, Y., Lu, D., Quade, N., Zhang, X.

Revision History  

• Version 1.0: 2010-08-18
  Type: Initial release
  
• Version 1.1: 2011-05-08
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance