1OII

Crystal structure of the alkylsulfatase AtsK, a non-heme Fe(II) alphaketoglutarate dependent Dioxygenase in complex with iron and alphaketoglutarate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.19 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.195 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal Structure of the Alkylsulfatase Atsk: Insights Into the Catalytic Mechanism of the Fe(II) Alpha-Ketoglutarate-Dependent Dioxygenase Superfamily

Mueller, I.Kahnert, A.Pape, T.Sheldrick, G.M.Meyer-Klaucke, W.Dierks, T.Kertesz, M.A.Uson, I.

(2004) Biochemistry 42: 3075

  • DOI: 10.1021/bi035752v
  • Primary Citation of Related Structures:  1OIH, 1OIJ, 1OIK

  • PubMed Abstract: 
  • The alkylsulfatase AtsK from Pseudomonas putida S-313 belongs to the widespread and versatile non-heme iron(II) alpha-ketoglutarate-dependent dioxygenase superfamily and catalyzes the oxygenolytic cleavage of a variety of different alkyl sulfate este ...

    The alkylsulfatase AtsK from Pseudomonas putida S-313 belongs to the widespread and versatile non-heme iron(II) alpha-ketoglutarate-dependent dioxygenase superfamily and catalyzes the oxygenolytic cleavage of a variety of different alkyl sulfate esters to the corresponding aldehyde and sulfate. The enzyme is only expressed under sulfur starvation conditions, providing a selective advantage for bacterial growth in soils and rhizosphere. Here we describe the crystal structure of AtsK in the apo form and in three complexes: with the cosubstrate alpha-ketoglutarate, with alpha-ketoglutarate and iron, and finally with alpha-ketoglutarate, iron, and an alkyl sulfate ester used as substrate in catalytic studies. The overall fold of the enzyme is closely related to that of the taurine/alpha-ketoglutarate dioxygenase TauD and is similar to the fold observed for other members of the enzyme superfamily. From comparison of these structures with the crystal structure of AtsK and its complexes, we propose a general mechanism for the catalytic cycle of the alpha-ketoglutarate-dependent dioxygenase superfamily.


    Organizational Affiliation

    Lehrstuhl für Strukturchemie, Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PUTATIVE ALKYLSULFATASE ATSK
A, B, C, D
301Pseudomonas putidaGene Names: atsK
EC: 1.13.11.-
Find proteins for Q9WWU5 (Pseudomonas putida)
Go to UniProtKB:  Q9WWU5
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
AKG
Query on AKG

Download SDF File 
Download CCD File 
A, B, C, D
2-OXOGLUTARIC ACID
C5 H6 O5
KPGXRSRHYNQIFN-UHFFFAOYSA-N
 Ligand Interaction
FE2
Query on FE2

Download SDF File 
Download CCD File 
A, B, C, D
FE (II) ION
Fe
CWYNVVGOOAEACU-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.19 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.195 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 72.421α = 90.00
b = 147.329β = 90.00
c = 158.573γ = 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: 2004-03-30
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance