1EA5

NATIVE ACETYLCHOLINESTERASE (E.C. 3.1.1.7) FROM TORPEDO CALIFORNICA at 1.8A resolution

• PDB DOI: https://doi.org/10.2210/pdb1EA5/pdb

• Classification: HYDROLASE
• Organism(s): Tetronarce californica
• Mutation(s): No 
• Membrane Protein: Yes  OPM


• Deposited: 2000-11-06 Released: 2000-11-08 
• Deposition Author(s): Harel, M., Weik, M., Silman, I., Sussman, J.L.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.205 
• R-Value Work: 0.185 
• R-Value Observed: 0.185 

Biological Assembly 1  

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

Biological assembly 1 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 61.18 kDa 
• Atom Count: 5,156 
• Modelled Residue Count: 532 
• Deposited Residue Count: 537 
• Unique protein chains: 1

Macromolecules

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

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG	B [auth A], C [auth A]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.205 
• R-Value Work: 0.185 
• R-Value Observed: 0.185 
• Space Group: P 3₁ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 111.573	α = 90
b = 111.573	β = 90
c = 137.587	γ = 120

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2000-11-08 
Deposition Author(s): Harel, M., Weik, M., Silman, I., Sussman, J.L.

Revision History  

• Version 1.0: 2000-11-08
  Type: Initial release
  
• Version 1.1: 2011-09-07
  Changes: Derived calculations, Non-polymer description, Other, Refinement description, Structure summary, Version format compliance
• Version 2.0: 2019-04-03
  Changes: Atomic model, Data collection, Derived calculations, Experimental preparation, Other
• Version 2.1: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Data collection, Derived calculations, Other, Structure summary
• Version 2.2: 2023-12-13
  Changes: Data collection, Database references, Refinement description, Structure summary