Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly 2  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 144.60 kDa 
• Atom Count: 10515 
• Modelled Residue Count: 1256 
• Deposited Residue Count: 1256 
• Unique protein chains: 1

3UF9

Crystal structure of SsoPox in complex with the phosphotriester fensulfothion

• PDB DOI: 10.2210/pdb3UF9/pdb

• Classification: HYDROLASE
• Organism(s): Saccharolobus solfataricus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2011-10-31 Released: 2012-10-03 
• Deposition Author(s): Elias, M., Gotthard, G., Hiblot, J., Chabriere, E.

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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 

Literature

Characterisation of the organophosphate hydrolase catalytic activity of SsoPox

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

(2012) Sci Rep 2: 779-779

• PubMed: 23139857 
• 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. 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.

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Organizational Affiliation: 

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

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Aryldialkylphosphatase	A, B, C, D	314	Saccharolobus solfataricus	Mutation(s): 0  Gene Names: php, SSO2522 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

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
FST	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
GOL	H [auth A], I [auth A], M [auth B]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
CO	F [auth A], K [auth B], O [auth C], R [auth D]	COBALT (II) ION Co XLJKHNWPARRRJB-UHFFFAOYSA-N
FE2	E [auth A], J [auth B], N [auth C], Q [auth D]	FE (II) ION Fe CWYNVVGOOAEACU-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
KCX	A, B, C, D	L-PEPTIDE LINKING	C7 H14 N2 O4		LYS

Binding Affinity Annotations
ID	Source	Binding 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 = 85.73	α = 90
b = 103.76	β = 90
c = 151.76	γ = 90

Software Package:

Software Name	Purpose
MOLREP	phasing
REFMAC	refinement
XDS	data reduction
XSCALE	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2011-10-31 
• Released Date: 2012-10-03 
Deposition Author(s): Elias, M., Gotthard, G., Hiblot, J., Chabriere, E.

Revision History  

• 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