Apo form of Thermogutta terrifontis esterase 2

Experimental Data Snapshot

  • Resolution: 1.70 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.231 
  • R-Value Observed: 0.232 

wwPDB Validation   3D Report Full Report

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A Thermophilic Bacterial Esterase for Scavenging Nerve Agents: A Kinetic, Biophysical and Structural Study.

Bzdrenga, J.Trenet, E.Chantegreil, F.Bernal, K.Nachon, F.Brazzolotto, X.

(2021) Molecules 26

  • DOI: https://doi.org/10.3390/molecules26030657
  • Primary Citation of Related Structures:  
    7BFN, 7BFO, 7BFR, 7BFT, 7BFU, 7BFV

  • PubMed Abstract: 

    Organophosphorous nerve agents (OPNA) pose an actual and major threat for both military and civilians alike, as an upsurge in their use has been observed in the recent years. Currently available treatments mitigate the effect of the nerve agents, and could be vastly improved by means of scavengers of the nerve agents. Consequently, efforts have been made over the years into investigating enzymes, also known as bioscavengers, which have the potential either to trap or hydrolyze these toxic compounds. We investigated the previously described esterase 2 from Thermogutta terrifontis (TtEst2) as a potential bioscavenger of nerve agents. As such, we assessed its potential against G-agents (tabun, sarin, and cyclosarin), VX, as well as the pesticide paraoxon. We report that TtEst2 is a good bioscavenger of paraoxon and G-agents, but is rather slow at scavenging VX. X-ray crystallography studies showed that TtEst2 forms an irreversible complex with the aforementioned agents, and allowed the identification of amino-acids, whose mutagenesis could lead to better scavenging properties for VX. In conjunction with its cheap production and purification processes, as well as a robust structural backbone, further engineering of TtEst2 could lead to a stopgap bioscavenger useful for in corpo scavenging or skin decontamination.

  • Organizational Affiliation

    Département de Toxicologie et Risques Chimiques, Institut de Recherche Biomédicale des Armées, 91220 Brétigny-sur-Orge, France.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Esterase287Thermogutta terrifontisMutation(s): 0 
Find proteins for A0A286RIX1 (Thermogutta terrifontis)
Explore A0A286RIX1 
Go to UniProtKB:  A0A286RIX1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A286RIX1
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on SO4

Download Ideal Coordinates CCD File 
O4 S
Experimental Data & Validation

Experimental Data

  • Resolution: 1.70 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.231 
  • R-Value Observed: 0.232 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 56.21α = 90
b = 67.7β = 90
c = 74.58γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
XSCALEdata scaling

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
French Ministry of Armed ForcesFranceNBC-5-C-4210

Revision History  (Full details and data files)

  • Version 1.0: 2021-02-10
    Type: Initial release
  • Version 1.1: 2024-01-31
    Changes: Data collection, Database references, Refinement description