Biological Assembly 1  

 3D View: Structure | Electron Density

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

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

Macromolecule Content

• Total Structure Weight: 22.23 kDa 
• Atom Count: 1898 
• Residue Count: 199 
• Unique protein chains: 1

3L9U

Crystal Structure of Salmonella enterica serovar Typhimurium DsbL

• DOI: 10.2210/pdb3L9U/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Salmonella enterica subsp. enterica serovar Typhimurium str. SL1344
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2010-01-05 Released: 2010-03-09 
• Deposition Author(s): Heras, B., Jarrott, R., Shouldice, S.R., Guncar, G.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.57 Å
• R-Value Free: 0.184 
• R-Value Work: 0.150 
• R-Value Observed: 0.152 

Literature

Structural and functional characterization of three DsbA paralogues from Salmonella enterica serovar typhimurium

Heras, B., Totsika, M., Jarrott, R., Shouldice, S.R., Guncar, G., Achard, M.E.S., Wells, T.J., Argente, M.P., McEwan, A.G., Schembri, M.A.

(2010) J Biol Chem 285: 18423-18432

• PubMed: 20233716 
• DOI: 10.1074/jbc.M110.101360
• Primary Citation of Related Structures:  
  3L9S, 3L9U, 3L9V


• PubMed Abstract: 
  

In prototypic Escherichia coli K-12 the introduction of disulfide bonds into folding proteins is mediated by the Dsb family of enzymes, primarily through the actions of the highly oxidizing protein EcDsbA. Homologues of the Dsb catalysts are found in most bacteria. Interestingly, pathogens have developed distinct Dsb machineries that play a pivotal role in the biogenesis of virulence factors, hence contributing to their pathogenicity. Salmonella enterica serovar (sv.) Typhimurium encodes an extended number of sulfhydryl oxidases, namely SeDsbA, SeDsbL, and SeSrgA. Here we report a comprehensive analysis of the sv. Typhimurium thiol oxidative system through the structural and functional characterization of the three Salmonella DsbA paralogues. The three proteins share low sequence identity, which results in several unique three-dimensional characteristics, principally in areas involved in substrate binding and disulfide catalysis. Furthermore, the Salmonella DsbA-like proteins also have different redox properties. Whereas functional characterization revealed some degree of redundancy, the properties of SeDsbA, SeDsbL, and SeSrgA and their expression pattern in sv. Typhimurium indicate a diverse role for these enzymes in virulence.

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Organizational Affiliation: 

Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia. [e-mail]

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Disulfide isomerase	A	201	Salmonella enterica subsp. enterica serovar Typhimurium str. SL1344	Mutation(s): 0  Gene Names: dsbL, STM3193 EC: 5.3.4.1
Find proteins for Q8ZLZ0 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)) Explore Q8ZLZ0  Go to UniProtKB:  Q8ZLZ0

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.57 Å
• R-Value Free: 0.184 
• R-Value Work: 0.150 
• R-Value Observed: 0.152 
• Space Group: P 2₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 85.582	α = 90
b = 46.593	β = 90
c = 60.222	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing
PHENIX	refinement
PDB_EXTRACT	data extraction
Blu-Ice	data collection

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2010-01-05 
• Released Date: 2010-03-09 
Deposition Author(s): Heras, B., Jarrott, R., Shouldice, S.R., Guncar, G.

Revision History 

• Version 1.0: 2010-03-09
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2017-11-01
  Changes: Refinement description