4AXB

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.171 

Starting Model: experimental
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This is version 2.1 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: https://doi.org/10.1016/j.cbi.2012.08.005
  • Primary Citation of Related Structures:  
    4AXB, 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 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:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
CHOLINESTERASE527Homo sapiensMutation(s): 0 
EC: 3.1.1.8
UniProt & NIH Common Fund Data Resources
Find proteins for P06276 (Homo sapiens)
Explore P06276 
Go to UniProtKB:  P06276
PHAROS:  P06276
GTEx:  ENSG00000114200 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP06276
Glycosylation
Glycosylation Sites: 6Go to GlyGen: P06276-1
Sequence Annotations
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  • Reference Sequence
Oligosaccharides

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Entity ID: 2
MoleculeChains Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[beta-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose
B, C
3N-Glycosylation
Glycosylation Resources
GlyTouCan:  G28454KX
GlyCosmos:  G28454KX
GlyGen:  G28454KX
Small Molecules
Ligands 6 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download Ideal Coordinates CCD File 
O [auth A],
P [auth A],
Q [auth A],
R [auth A]
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
FP1
Query on FP1

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I [auth A]N-hydroxy-1-(1-methylpyridin-2(1H)-ylidene)methanamine
C7 H10 N2 O
YDWKOUCMHAMECR-SREVYHEPSA-N
SO4
Query on SO4

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E [auth A],
M [auth A]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
GOL
Query on GOL

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F [auth A],
G [auth A],
N [auth A]
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
K
Query on K

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D [auth A],
L [auth A]
POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
CL
Query on CL

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H [auth A],
J [auth A],
K [auth A]
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.171 
  • Space Group: I 4 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 155.95α = 90
b = 155.95β = 90
c = 127.9γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-08-29
    Type: Initial release
  • Version 1.1: 2013-01-16
    Changes: Database references
  • Version 1.2: 2013-04-17
    Changes: Database references
  • Version 1.3: 2013-09-25
    Changes: Database references, Other, Source and taxonomy
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Derived calculations, Other, Structure summary
  • Version 2.1: 2023-12-20
    Changes: Data collection, Database references, Refinement description, Structure summary