1H4M

Sulfurtransferase from Azotobacter vinelandii in complex with phosphate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.174 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

A Persulfurated Cysteine Promotes Active Site Reactivity in Azotobacter Vinelandii Rhodanse

Bordo, D.Forlani, F.Spallarossa, A.Colnaghi, R.Carpen, A.Bolognesi, M.Pagani, S.

(2001) Biol.Chem. 382: 1245

  • DOI: 10.1515/BC.2001.155
  • Primary Citation of Related Structures:  1H4K

  • PubMed Abstract: 
  • Active site reactivity and specificity of RhdA, a thiosulfate:cyanide sulfurtransferase (rhodanese) from Azotobacter vinelandii, have been investigated through ligand binding, site-directed mutagenesis, and X-ray crystallographic techniques, in a com ...

    Active site reactivity and specificity of RhdA, a thiosulfate:cyanide sulfurtransferase (rhodanese) from Azotobacter vinelandii, have been investigated through ligand binding, site-directed mutagenesis, and X-ray crystallographic techniques, in a combined approach. In native RhdA the active site Cys230 is found persulfurated; fluorescence and sulfurtransferase activity measurements show that phosphate anions interact with Cys230 persulfide sulfur atom and modulate activity. Crystallographic analyses confirm that phosphate and hypophosphite anions react with native RhdA, removing the persulfide sulfur atom from the active site pocket. Considering that RhdA and the catalytic subunit of Cdc25 phosphatases share a common three-dimensional fold as well as active site Cys (catalytic) and Arg residues, two RhdA mutants carrying a single amino acid insertion at the active site loop were designed and their phosphatase activity tested. The crystallographic and functional results reported here show that specific sulfurtransferase or phosphatase activities are strictly related to precise tailoring of the catalytic loop structure in RhdA and Cdc25 phosphatase, respectively.


    Related Citations: 
    • The Crystal Structure of a Sulfurtransferase from Azotobacter Vinelandii Highliths the Evolutionary Relationship between the Rhodanese and Phosphatase Enzyme Families
      Bordo, D.,Deriu, D.,Colnaghi, R.,Carpen, A.,Pagani, S.,Bolognesi, M.
      (2000) J.Mol.Biol. 298: 691


    Organizational Affiliation

    National Cancer Research Institute, Advanced Biotechnology Center, Genova, Italy.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PUTATIVE THIOSULFATE SULFURTRANSFERASE
X
271Azotobacter vinelandiiGene Names: rhdA
EC: 2.8.1.1
Find proteins for P52197 (Azotobacter vinelandii)
Go to UniProtKB:  P52197
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
EDO
Query on EDO

Download SDF File 
Download CCD File 
X
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.174 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 40.410α = 90.00
b = 151.469β = 90.00
c = 53.609γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
SCALEPACKdata scaling
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-05-16
    Type: Initial release
  • Version 1.1: 2014-02-05
    Type: Data collection, Database references, Derived calculations, Non-polymer description, Other, Source and taxonomy, Structure summary, Version format compliance