1VXR

O-ETHYLMETHYLPHOSPHONYLATED ACETYLCHOLINESTERASE OBTAINED BY REACTION WITH O-ETHYL-S-[2-[BIS(1-METHYLETHYL)AMINO]ETHYL] METHYLPHOSPHONOTHIOATE (VX)

• PDB DOI: https://doi.org/10.2210/pdb1VXR/pdb

• Classification: HYDROLASE
• Organism(s): Tetronarce californica
• Mutation(s): No 


• Deposited: 1999-04-21 Released: 1999-11-15 
• Deposition Author(s): Millard, C.B., Koellner, G., Silman, I., Sussman, J.L.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.230 
• R-Value Work: 0.189 

Starting Model: experimental

Literature

Reaction Products of Acetylcholinesterase and VX Reveal a Mobile Histidine in the Catalytic Triad

Millard, C.B., Koellner, G., Ordentlich, A., Shafferman, A., Silman, I., Sussman, J.L.

(1999) J Am Chem Soc 121: 9883-9884

• DOI: https://doi.org/10.1021/ja992704i

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 61.9 kDa 
• Atom Count: 4,655 
• Modelled Residue Count: 532 
• Deposited Residue Count: 537 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PROTEIN (ACETYLCHOLINESTERASE)	A	537	Tetronarce californica	Mutation(s): 0  EC: 3.1.1.7
UniProt
Find proteins for P04058 (Tetronarce californica) Explore P04058  Go to UniProtKB:  P04058
Glycosylation
Glycosylation Sites: 2

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	B	2		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G42666HT GlyCosmos:  G42666HT GlyGen:  G42666HT

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG	C [auth A]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N
MES	E [auth A], F [auth A]	2-(N-MORPHOLINO)-ETHANESULFONIC ACID C6 H13 N O4 S SXGZJKUKBWWHRA-UHFFFAOYSA-N
VX	D [auth A]	O-ETHYLMETHYLPHOSPHONIC ACID ESTER GROUP C3 H9 O3 P UFZOPKFMKMAWLU-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.230 
• R-Value Work: 0.189 
• Space Group: P 3₁ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 112.836	α = 90
b = 112.836	β = 90
c = 137.36	γ = 120

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
CNS	refinement
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1999-11-15 
Deposition Author(s): Millard, C.B., Koellner, G., Silman, I., Sussman, J.L.

Revision History  

• Version 1.0: 1999-11-15
  Type: Initial release
  
• Version 1.1: 2007-10-16
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Non-polymer description, Version format compliance
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Advisory, Atomic model, Data collection, Derived calculations, Non-polymer description, Structure summary
• Version 2.1: 2021-06-02
  Changes: Derived calculations, Structure summary
• Version 2.2: 2023-08-23
  Changes: Data collection, Database references, Refinement description
• Version 2.3: 2024-10-09
  Changes: Structure summary