1JL3

Crystal Structure of B. subtilis ArsC


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.226 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Bacillus subtilis arsenate reductase is structurally and functionally similar to low molecular weight protein tyrosine phosphatases.

Bennett, M.S.Guan, Z.Laurberg, M.Su, X.D.

(2001) Proc.Natl.Acad.Sci.USA 98: 13577-13582

  • DOI: 10.1073/pnas.241397198

  • PubMed Abstract: 
  • Arsenate is an abundant oxyanion that, because of its ability to mimic the phosphate group, is toxic to cells. Arsenate reductase (EC; encoded by the arsC gene in bacteria) participates to achieve arsenate resistance in both prokaryotes and yeast by ...

    Arsenate is an abundant oxyanion that, because of its ability to mimic the phosphate group, is toxic to cells. Arsenate reductase (EC; encoded by the arsC gene in bacteria) participates to achieve arsenate resistance in both prokaryotes and yeast by reducing arsenate to arsenite; the arsenite is then exported by a specific transporter. The crystal structure of Bacillus subtilis arsenate reductase in the reduced form with a bound sulfate ion in its active site is solved at 1.6-A resolution. Significant structural similarity is seen between arsenate reductase and bovine low molecular weight protein tyrosine phosphatase, despite very low sequence identity. The similarity is especially high between their active sites. It is further confirmed that this structural homology is relevant functionally by showing the phosphatase activity of the arsenate reductase in vitro. Thus, we can understand the arsenate reduction in the light of low molecular weight protein tyrosine phosphatase mechanism and also explain the catalytic roles of essential residues such as Cys-10, Cys-82, Cys-89, Arg-16, and Asp-105. A "triple cysteine redox relay" is proposed for the arsenate reduction mechanism.


    Organizational Affiliation

    Department of Molecular Biophysics, Kemicentrum, P.O. Box 124, Lund University, SE-221 00 Lund, Sweden.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ARSENATE REDUCTASE
A, B, C, D
139Bacillus subtilis (strain 168)Gene Names: arsC (yqcM)
EC: 1.20.4.-, 3.1.3.48
Find proteins for P45947 (Bacillus subtilis (strain 168))
Go to UniProtKB:  P45947
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B, C, D
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.226 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 50.940α = 90.00
b = 94.310β = 90.00
c = 118.700γ = 90.00
Software Package:
Software NamePurpose
XDSdata scaling
SOLVEphasing
XDSdata reduction
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-10-24
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-04
    Type: Data collection, Refinement description