Biological Assembly 1  

 3D View: Structure | Ligand Interaction

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

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

Macromolecule Content

• Total Structure Weight: 15.71 kDa 
• Atom Count: 1098 
• Modelled Residue Count: 138 
• Deposited Residue Count: 138 
• Unique protein chains: 1

1JGS

Multiple Antibiotic Resistance Repressor, MarR

• DOI: 10.2210/pdb1JGS/pdb

• Classification: TRANSCRIPTION
• Organism(s): Escherichia coli
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2001-06-26 Released: 2001-12-28 
• Deposition Author(s): Alekshun, M.N., Levy, S.B., Mealy, T.R., Seaton, B.A., Head, J.F.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.287 
• R-Value Work: 0.247 

Literature

The crystal structure of MarR, a regulator of multiple antibiotic resistance, at 2.3 A resolution.

Alekshun, M.N., Levy, S.B., Mealy, T.R., Seaton, B.A., Head, J.F.

(2001) Nat Struct Biol 8: 710-714

• PubMed: 11473263 
• DOI: 10.1038/90429
• Primary Citation of Related Structures:  
  1JGS


• PubMed Abstract: 
  

MarR is a regulator of multiple antibiotic resistance in Escherichia coli. It is the prototypical member of the MarR family of regulatory proteins found in bacteria and archaea that play important roles in the development of antibiotic resistance, a global health problem. Here we describe the crystal structure of the MarR protein, determined at a resolution of 2.3 A. This is the first reported crystal structure of a member of this newly-described protein family. The structure shows MarR as a dimer with each subunit containing a winged-helix DNA binding motif.

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Organizational Affiliation: 

Center for Adaptation Genetics and Drug Resistance, Tufts University School of Medicine, Boston, Massachusetts 02111, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
MULTIPLE ANTIBIOTIC RESISTANCE PROTEIN MARR	A	138	Escherichia coli	Mutation(s): 0
Find proteins for P27245 (Escherichia coli (strain K12)) Explore P27245  Go to UniProtKB:  P27245

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SAL	B [auth A], C [auth A]	2-HYDROXYBENZOIC ACID C7 H6 O3 YGSDEFSMJLZEOE-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.287 
• R-Value Work: 0.247 
• Space Group: I 4₁ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 62	α = 90
b = 62	β = 90
c = 132.89	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
SOLVE	phasing
CNS	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2001-06-26 
• Released Date: 2001-12-28 
Deposition Author(s): Alekshun, M.N., Levy, S.B., Mealy, T.R., Seaton, B.A., Head, J.F.

Revision History  

• Version 1.0: 2001-12-28
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance