3UF9

Crystal structure of SsoPox in complex with the phosphotriester fensulfothion


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.68 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.239 
  • R-Value Observed: 0.241 

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Ligand Structure Quality Assessment 


This is version 1.3 of the entry. See complete history


Literature

Characterisation of the organophosphate hydrolase catalytic activity of SsoPox

Hiblot, J.Gotthard, G.Chabriere, E.Elias, M.

(2012) Sci Rep 2: 779-779

  • DOI: 10.1038/srep00779
  • Primary Citation of Related Structures:  
    3UF9

  • PubMed Abstract: 
  • SsoPox is a lactonase endowed with promiscuous phosphotriesterase activity isolated from Sulfolobus solfataricus that belongs to the Phosphotriesterase-Like Lactonase family. Because of its intrinsic thermal stability, SsoPox is seen as an appealing candidate as a bioscavenger for organophosphorus compounds ...

    SsoPox is a lactonase endowed with promiscuous phosphotriesterase activity isolated from Sulfolobus solfataricus that belongs to the Phosphotriesterase-Like Lactonase family. Because of its intrinsic thermal stability, SsoPox is seen as an appealing candidate as a bioscavenger for organophosphorus compounds. A comprehensive kinetic characterisation of SsoPox has been performed with various phosphotriesters (insecticides) and phosphodiesters (nerve agent analogues) as substrates. We show that SsoPox is active for a broad range of OPs and remains active under denaturing conditions. In addition, its OP hydrolase activity is highly stimulated by anionic detergent at ambient temperature and exhibits catalytic efficiencies as high as k(cat)/K(M) of 10(5) M(-1)s(-1) against a nerve agent analogue. The structure of SsoPox bound to the phosphotriester fensulfothion reveals an unexpected and non-productive binding mode. This feature suggests that SsoPox's active site is sub-optimal for phosphotriester binding, which depends not only upon shape but also on localised charge of the ligand.


    Organizational Affiliation

    URMITE UMR CNRS-IRD 6236, IFR48, Faculté de Médecine et de Pharmacie, Université de la Méditerranée, Marseille, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
AryldialkylphosphataseA, B, C, D314Saccharolobus solfataricusMutation(s): 0 
Gene Names: phpSSO2522
EC: 3.1.8.1
UniProt
Find proteins for Q97VT7 (Saccharolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2))
Explore Q97VT7 
Go to UniProtKB:  Q97VT7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ97VT7
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FST
Query on FST

Download Ideal Coordinates CCD File 
G [auth A],
L [auth B],
P [auth C],
S [auth D]
O,O-diethyl O-{4-[(R)-methylsulfinyl]phenyl} phosphorothioate
C11 H17 O4 P S2
XDNBJTQLKCIJBV-GOSISDBHSA-N
 Ligand Interaction
GOL
Query on GOL

Download Ideal Coordinates CCD File 
H [auth A],
I [auth A],
M [auth B]
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
CO
Query on CO

Download Ideal Coordinates CCD File 
F [auth A],
K [auth B],
O [auth C],
R [auth D]
COBALT (II) ION
Co
XLJKHNWPARRRJB-UHFFFAOYSA-N
 Ligand Interaction
FE2
Query on FE2

Download Ideal Coordinates CCD File 
E [auth A],
J [auth B],
N [auth C],
Q [auth D]
FE (II) ION
Fe
CWYNVVGOOAEACU-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
KCX
Query on KCX
A, B, C, D L-PEPTIDE LINKINGC7 H14 N2 O4LYS
Binding Affinity Annotations 
IDSourceBinding Affinity
FST PDBBind:  3UF9 Ki: 7.78e+6 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.68 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.239 
  • R-Value Observed: 0.241 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 85.73α = 90
b = 103.76β = 90
c = 151.76γ = 90
Software Package:
Software NamePurpose
MOLREPphasing
REFMACrefinement
XDSdata reduction
XSCALEdata scaling

Structure Validation

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Ligand Structure Quality Assessment 



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-10-03
    Type: Initial release
  • Version 1.1: 2012-10-10
    Changes: Structure summary
  • Version 1.2: 2013-05-22
    Changes: Database references
  • Version 1.3: 2013-11-06
    Changes: Data collection