Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | 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: 14.69 kDa 
• Atom Count: 965 
• Modelled Residue Count: 129 
• Deposited Residue Count: 131 
• Unique protein chains: 1

2O03

Crystal structure of FurB from M. tuberculosis- a Zinc uptake regulator

• PDB DOI: 10.2210/pdb2O03/pdb

• Classification: GENE REGULATION
• Organism(s): Mycobacterium tuberculosis
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2006-11-27 Released: 2007-02-13 
• Deposition Author(s): Lucarelli, D., Russo, S., Pohl, E.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 0.239 
• R-Value Work: 0.230 
• R-Value Observed: 0.230 

Literature

Crystal structure and function of the zinc uptake regulator FurB from Mycobacterium tuberculosis.

Lucarelli, D., Russo, S., Garman, E., Milano, A., Meyer-Klaucke, W., Pohl, E.

(2007) J Biol Chem 282: 9914-9922

• PubMed: 17213192 
• DOI: 10.1074/jbc.M609974200
• Primary Citation of Related Structures:  
  2O03


• PubMed Abstract: 
  

Members of the ferric/zinc uptake regulator (Fur/Zur) family are the central metal-dependent regulator proteins in many Gram-negative and -positive bacteria. They are responsible for the control of a wide variety of basic physiological processes and the expression of important virulence factors in human pathogens. Therefore, Fur has gathered significant interest as a potential target for novel antibiotics. Here we report the crystal structure of FurB from Mycobacterium tuberculosis at a resolution of 2.7A, and we present biochemical and spectroscopic data that allow us to propose the functional role of this protein. Although the overall fold of FurB with an N-terminal DNA binding domain and a C-terminal dimerization domain is conserved among the Zur/Fur family, large differences in the spatial arrangement of the two domains with respect to each other can be observed. The biochemical and spectroscopic analysis presented here reveals that M. tuberculosis FurB is Zn(II)-dependent and is likely to control genes involved in the bacterial zinc uptake. The combination of the structural, spectroscopic, and biochemical results enables us to determine the structural basis for functional differences in this important family of bacterial regulators.

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Organizational Affiliation: 

European Molecular Biology Laboratory, Hamburg Outstation, Notkestrasse 85, D-22603 Hamburg, Germany.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
probable Zinc uptake regulation protein FurB	A	131	Mycobacterium tuberculosis	Mutation(s): 0  Gene Names: furB
UniProt
Find proteins for P9WN85 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)) Explore P9WN85  Go to UniProtKB:  P9WN85

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ZN	B [auth A], C [auth A], D [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 0.239 
• R-Value Work: 0.230 
• R-Value Observed: 0.230 
• Space Group: P 4₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 51.6	α = 90
b = 51.6	β = 90
c = 133.4	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
GCLIENT	data collection
XDS	data reduction
XSCALE	data scaling
SHELXCD	phasing
SHELXD	phasing
SHELXE	model building

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2006-11-27 
• Released Date: 2007-02-13 
Deposition Author(s): Lucarelli, D., Russo, S., Pohl, E.

Revision History  

• Version 1.0: 2007-02-13
  Type: Initial release
  
• Version 1.1: 2008-05-01
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Advisory, Derived calculations, Version format compliance
• Version 1.3: 2017-10-18
  Changes: Refinement description