1CRZ

CRYSTAL STRUCTURE OF THE E. COLI TOLB PROTEIN

• PDB DOI:  https://doi.org/10.2210/pdb1CRZ/pdb

• Classification: TOXIN BINDING PROTEIN
• Organism(s): Escherichia coli
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 1999-08-16 Released: 2000-08-16 
• Deposition Author(s): Abergel, C., Bouveret, E., Claverie, J.-M., Brown, K., Rigal, A., Lazdunski, C., Benedetti, H.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.95 Å
• R-Value Free: 0.238 
• R-Value Work: 0.238 
• R-Value Observed: 0.188 

Literature

Structure of the Escherichia coli TolB protein determined by MAD methods at 1.95 A resolution.

Abergel, C., Bouveret, E., Claverie, J.M., Brown, K., Rigal, A., Lazdunski, C., Benedetti, H.

(1999) Structure 7: 1291-1300

• PubMed: 10545334 
• DOI: https://doi.org/10.1016/s0969-2126(00)80062-3
• Primary Citation of Related Structures:  
  1CRZ


• PubMed Abstract: 
  

The periplasmic protein TolB from Escherichia coli is part of the Tol-PAL (peptidoglycan-associated lipoprotein) multiprotein complex used by group A colicins to penetrate and kill cells. TolB homologues are found in many gram-negative bacteria and the Tol-PAL system is thought to play a role in bacterial envelope integrity. TolB is required for lethal infection by Salmonella typhimurium in mice.

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Related Citations: 

• Crystallization and preliminary crystallographic study of a component of the E. coli Tol system: TolB
  Abergel, C., Rigal, A., Chenivesse, S., Lazdunski, C., Claverie, J.-M., Bouveret, E., Benedetti, H.
  (1998) Acta Crystallogr D Biol Crystallogr D54: 102

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Organizational Affiliation: 

Information Génétique et Structurale, CNRS-UMR 1889 Institut de Biologie Structurale et Microbiologie 31 Chemin Joseph Aiguier, Marseille, 13402, Cedex 20, France. [e-mail]

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 43.21 kDa 
• Atom Count: 3,488 
• Modelled Residue Count: 403 
• Deposited Residue Count: 403 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
TOLB PROTEIN	A	403	Escherichia coli	Mutation(s): 6
UniProt
Find proteins for P0A855 (Escherichia coli (strain K12)) Explore P0A855  Go to UniProtKB:  P0A855

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.95 Å
• R-Value Free: 0.238 
• R-Value Work: 0.238 
• R-Value Observed: 0.188 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 63.18	α = 90
b = 40.5	β = 110.88
c = 76.3	γ = 90

Software Package:

Software Name	Purpose
SOLVE	phasing
CNS	refinement
DENZO	data reduction
CCP4	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2000-08-16 
Deposition Author(s): Abergel, C., Bouveret, E., Claverie, J.-M., Brown, K., Rigal, A., Lazdunski, C., Benedetti, H.

Revision History  

• Version 1.0: 2000-08-16
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2018-01-24
  Changes: Advisory, Database references, Structure summary