6EMI

Crystal structure of a variant of human butyrylcholinesterase expressed in bacteria.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.476 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.222 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Bacterial Expression of Human Butyrylcholinesterase as a Tool for Nerve Agent Bioscavengers Development.

Brazzolotto, X.Igert, A.Guillon, V.Santoni, G.Nachon, F.

(2017) Molecules 22: --

  • DOI: 10.3390/molecules22111828

  • PubMed Abstract: 
  • Human butyrylcholinesterase is a performant stoichiometric bioscavenger of organophosphorous nerve agents. It is either isolated from outdated plasma or functionally expressed in eukaryotic systems. Here, we report the production of active human buty ...

    Human butyrylcholinesterase is a performant stoichiometric bioscavenger of organophosphorous nerve agents. It is either isolated from outdated plasma or functionally expressed in eukaryotic systems. Here, we report the production of active human butyrylcholinesterase in a prokaryotic system after optimization of the primary sequence through the Protein Repair One Stop Shop process, a structure- and sequence-based algorithm for soluble bacterial expression of difficult eukaryotic proteins. The mutant enzyme was purified to homogeneity. Its kinetic parameters with substrate are similar to the endogenous human butyrylcholinesterase or recombinants produced in eukaryotic systems. The isolated protein was prone to crystallize and its 2.5-Å X-ray structure revealed an active site gorge region identical to that of previously solved structures. The advantages of this alternate expression system, particularly for the generation of butyrylcholinesterase variants with nerve agent hydrolysis activity, are discussed.


    Organizational Affiliation

    Institut de Recherche Biomédicale des Armées, Département de Toxicologie et Risques Chimiques, 1 Place Général Valérie André, 91223 Brétigny-sur-Orge, France. alexandre.igert@chemdef.fr.,Institut de Recherche Biomédicale des Armées, Département de Toxicologie et Risques Chimiques, 1 Place Général Valérie André, 91223 Brétigny-sur-Orge, France. xavier@brazzolotto.net.,Institut de Recherche Biomédicale des Armées, Département de Toxicologie et Risques Chimiques, 1 Place Général Valérie André, 91223 Brétigny-sur-Orge, France. virginia.guillon@chemdef.fr.,European Synchrotron Radiation Facility, 71 Avenue des Martyrs, 38043 Grenoble CEDEX 9, France. gianluca.santoni@esrf.fr.,Institut de Recherche Biomédicale des Armées, Département de Toxicologie et Risques Chimiques, 1 Place Général Valérie André, 91223 Brétigny-sur-Orge, France. florian@nachon.net.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Cholinesterase
A, B
532Homo sapiensMutation(s): 47 
Gene Names: BCHE (CHE1)
EC: 3.1.1.8
Find proteins for P06276 (Homo sapiens)
Go to Gene View: BCHE
Go to UniProtKB:  P06276
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
A, B
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
EDO
Query on EDO

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Download CCD File 
A, B
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
PG4
Query on PG4

Download SDF File 
Download CCD File 
B
TETRAETHYLENE GLYCOL
C8 H18 O5
UWHCKJMYHZGTIT-UHFFFAOYSA-N
 Ligand Interaction
PGE
Query on PGE

Download SDF File 
Download CCD File 
A, B
TRIETHYLENE GLYCOL
C6 H14 O4
ZIBGPFATKBEMQZ-UHFFFAOYSA-N
 Ligand Interaction
PEG
Query on PEG

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Download CCD File 
A, B
DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.476 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.222 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 159.840α = 90.00
b = 75.170β = 93.37
c = 122.070γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
PHASERphasing
AutoPROCdata reduction
AutoPROCdata scaling
MxCuBEdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
French Ministry of DefenseFrancePDH-2-NRBC-3-C-3201

Revision History 

  • Version 1.0: 2017-11-08
    Type: Initial release