1LJL | pdb_00001ljl

Wild Type pI258 S. aureus arsenate reductase

• PDB DOI: https://doi.org/10.2210/pdb1LJL/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Staphylococcus aureus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2002-04-21 Released: 2002-08-07 
• Deposition Author(s): Messens, J., Martins, J.C., Van Belle, K., Brosens, E., Desmyter, A., De Gieter, M., Wieruszeski, J.M., Willem, R., Wyns, L., Zegers, I.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.01 Å
• R-Value Free: 
  0.259 (Depositor), 0.262 (DCC) 
• R-Value Work: 
  0.214 (Depositor), 0.212 (DCC) 
• R-Value Observed: 
  0.230 (Depositor) 

Starting Model: experimental

Literature

All intermediates of the arsenate reductase mechanism, including an intramolecular dynamic disulfide cascade.

Messens, J., Martins, J.C., Van Belle, K., Brosens, E., Desmyter, A., De Gieter, M., Wieruszeski, J.M., Willem, R., Wyns, L., Zegers, I.

(2002) Proc Natl Acad Sci U S A 99: 8506-8511

• PubMed: 12072565 
• DOI: https://doi.org/10.1073/pnas.132142799
• Primary Citation Related Structures: 
  1LJL, 1LJU, 1LK0


• PubMed Abstract: 
  

  The mechanism of pI258 arsenate reductase (ArsC) catalyzed arsenate reduction, involving its P-loop structural motif and three redox active cysteines, has been unraveled. All essential intermediates are visualized with x-ray crystallography, and NMR is used to map dynamic regions in a key disulfide intermediate. Steady-state kinetics of ArsC mutants gives a view of the crucial residues for catalysis. ArsC combines a phosphatase-like nucleophilic displacement reaction with a unique intramolecular disulfide bond cascade. Within this cascade, the formation of a disulfide bond triggers a reversible "conformational switch" that transfers the oxidative equivalents to the surface of the protein, while releasing the reduced substrate.

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Organizational Affiliation: 
• Dienst Ultrastructuur, Vlaams interuniversitair Instituut voor Biotechnologie, Vrije Universiteit Brussel, Paardenstraat 65, 1640 St. Genesius-Rode, Belgium. [e-mail]

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 14.87 kDa 
• Atom Count: 1,132 
• Modeled Residue Count: 130 
• Deposited Residue Count: 131 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
arsenate reductase	A	131	Staphylococcus aureus	Mutation(s): 0  Gene Names: arsc EC: 1.97.1.5 (PDB Primary Data), 1.20.4.4 (UniProt)
UniProt
Find proteins for P0A006 (Staphylococcus aureus) Explore P0A006  Go to UniProtKB:  P0A006

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
K	B [auth A]	POTASSIUM ION K NPYPAHLBTDXSSS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.01 Å
• R-Value Free:  0.259 (Depositor), 0.262 (DCC) 
• R-Value Work:  0.214 (Depositor), 0.212 (DCC) 
• R-Value Observed: 0.230 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 32.45	α = 90
b = 32.77	β = 90
c = 100.92	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2002-08-07 
Deposition Author(s): Messens, J., Martins, J.C., Van Belle, K., Brosens, E., Desmyter, A., De Gieter, M., Wieruszeski, J.M., Willem, R., Wyns, L., Zegers, I.

Revision History  

• Version 1.0: 2002-08-07
  Type: Initial release
  
• Version 1.1: 2008-04-28
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2018-01-31
  Changes: Experimental preparation
• Version 1.4: 2023-08-16
  Changes: Data collection, Database references, Derived calculations, Refinement description