1P0P

Crystal structure of soman-aged human butyryl cholinesterase in complex with the substrate analog butyrylthiocholine

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.199 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history. 

Literature

Crystal structure of human butyrylcholinesterase and of its complexes with substrate and products.

Nicolet, Y., Lockridge, O., Masson, P., Fontecilla-Camps, J.C., Nachon, F.

(2003) J.Biol.Chem. 278: 41141-41147

  • DOI: 10.1074/jbc.M210241200
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    • Cholinesterases are among the most efficient enzymes known. They are divided into two groups: acetylcholinesterase, involved in the hydrolysis of the neurotransmitter acetylcholine, and butyrylcholinesterase of unknown function. Several crystal struc ...

    Cholinesterases are among the most efficient enzymes known. They are divided into two groups: acetylcholinesterase, involved in the hydrolysis of the neurotransmitter acetylcholine, and butyrylcholinesterase of unknown function. Several crystal structures of the former have shown that the active site is located at the bottom of a deep and narrow gorge, raising the question of how substrate and products enter and leave. Human butyrylcholinesterase (BChE) has attracted attention because it can hydrolyze toxic esters such as cocaine or scavenge organophosphorus pesticides and nerve agents. Here we report the crystal structures of several recombinant truncated human BChE complexes and conjugates and provide a description for mechanistically relevant non-productive substrate and product binding. As expected, the structure of BChE is similar to a previously published theoretical model of this enzyme and to the structure of Torpedo acetylcholinesterase. The main difference between the experimentally determined BChE structure and its model is found at the acyl binding pocket that is significantly bigger than expected. An electron density peak close to the catalytic Ser(198) has been modeled as bound butyrate.

    Related Citations: 
    • Engineering of a monomeric and low-glycosylated form of human butyrylcholinesterase: expression, purification, characterization and crystallization
      Nachon, F.,Nicolet, Y.,Viguie, N.,Masson, P.,Fontecilla-Camps, J.C.,Lockridge, O.
      (2002) Eur.J.Biochem. 269: 630

    Organizational Affiliation: 

    Laboratoire de Cristallographie et Cristallogénèse des Protéines, Institut de Biologie Structurale "Jean-Pierre Ebel," CEA, UJF, CNRS, 41 rue Jules Horowitz, 38027 Grenoble Cedex 1, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Cholinesterase
A
529Homo sapiensMutation(s): 4 
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 7 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4
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A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
BCH
Query on BCH
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A
2-(BUTYRYLSULFANYL)-N,N,N-TRIMETHYLETHANAMINIUM
BUTYRYLTHIOCHOLINE
C9 H20 N O S
AWBGQVBMGBZGLS-UHFFFAOYSA-N
 Ligand Interaction
CL
Query on CL
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Download CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
GOL
Query on GOL
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A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
FUC
Query on FUC
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A
ALPHA-L-FUCOSE
C6 H12 O5
SHZGCJCMOBCMKK-SXUWKVJYSA-N
 Ligand Interaction
NAG
Query on NAG
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A
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
VXA
Query on VXA
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A
METHYLPHOSPHONIC ACID ESTER GROUP
C H4 O2 P
BCDIWLCKOCHCIH-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.199 
  • Space Group: I 4 2 2
Unit Cell:
Length (Å)Angle (°)
a = 154.924α = 90.00
b = 154.924β = 90.00
c = 127.909γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
CNSphasing
MOSFLMdata reduction
CCP4data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-08-05
    Type: Initial release
  • Version 1.1: 2008-04-02
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance