4AXB

Crystal structure of soman-aged human butyrylcholinesterase in complex with 2-PAM


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.168 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

A Step Toward the Reactivation of Aged Cholinesterases -Crystal Structure of Ligands Binding to Aged Human Butyrylcholinesterase

Wandhammer, M.De Koning, M.Van Grol, M.Loiodice, M.Saurel, L.Noort, D.Goeldner, M.Nachon, F.

(2013) Chem.Biol.Interact 203: 19

  • DOI: 10.1016/j.cbi.2012.08.005
  • Primary Citation of Related Structures:  4B0O, 4B0P

  • PubMed Abstract: 
  • Organophosphorus nerve agents irreversibly inhibit cholinesterases. Phosphylation of the catalytic serine can be reversed by the mean of powerful nucleophiles like oximes. But the phosphyl adduct can undergo a rapid spontaneous reaction leading to an ...

    Organophosphorus nerve agents irreversibly inhibit cholinesterases. Phosphylation of the catalytic serine can be reversed by the mean of powerful nucleophiles like oximes. But the phosphyl adduct can undergo a rapid spontaneous reaction leading to an aged enzyme, i.e., a conjugated enzyme that is no longer reactivable by oximes. One strategy to regain reactivability is to alkylate the phosphylic adduct. Specific alkylating molecules were synthesized and the crystal structures of the complexes they form with soman-aged human butyrylcholinesterase were solved. Although the compounds bind in the active site gorge of the aged enzyme, the orientation of the alkylating function appears to be unsuitable for efficient alkylation of the phosphylic adduct. However, these crystal structures provide key information to design efficient alkylators of aged-butyrylcholinesterase and specific reactivators of butyrylcholinesterase.


    Organizational Affiliation

    Département de Toxicologie, Institut de Recherche Biomédicale des Armées - CRSSA, La Tronche, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CHOLINESTERASE
A
527Homo sapiensGene 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
K
Query on K

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A
POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

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A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
CL
Query on CL

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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
FP1
Query on FP1

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A
N-hydroxy-1-(1-methylpyridin-2(1H)-ylidene)methanamine
C7 H10 N2 O
YDWKOUCMHAMECR-SREVYHEPSA-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
FUL
Query on FUL

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A
BETA-L-FUCOSE
6-DEOXY-BETA-L-GALACTOSE
C6 H12 O5
SHZGCJCMOBCMKK-KGJVWPDLSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
SBG
Query on SBG
A
NON-POLYMERC4 H10 N O5 PSER
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.168 
  • Space Group: I 4 2 2
Unit Cell:
Length (Å)Angle (°)
a = 155.950α = 90.00
b = 155.950β = 90.00
c = 127.900γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-08-29
    Type: Initial release
  • Version 1.1: 2013-01-16
    Type: Database references
  • Version 1.2: 2013-04-17
    Type: Database references
  • Version 1.3: 2013-09-25
    Type: Database references, Other, Source and taxonomy