2ACE

NATIVE ACETYLCHOLINESTERASE (E.C. 3.1.1.7) FROM TORPEDO CALIFORNICA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.199 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structure of acetylcholinesterase complexed with the nootropic alkaloid, (-)-huperzine A.

Raves, M.L.Harel, M.Pang, Y.-P.Silman, I.Kozikowski, A.P.Sussman, J.L.

(1997) Nat Struct Biol 4: 57-63

  • DOI: 10.1038/nsb0197-57
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • (-)-Huperzine A (HupA) is found in an extract from a club moss that has been used for centuries in Chinese folk medicine. Its action has been attributed to its ability to strongly inhibit acetylcholinesterase (AChE). The crystal structure of the comp ...

    (-)-Huperzine A (HupA) is found in an extract from a club moss that has been used for centuries in Chinese folk medicine. Its action has been attributed to its ability to strongly inhibit acetylcholinesterase (AChE). The crystal structure of the complex of AChE with optically pure HupA at 2.5 A resolution shows an unexpected orientation for the inhibitor with surprisingly few strong direct interactions with protein residues to explain its high affinity. This structure is compared to the native structure of AChE devoid of any inhibitor as determined to the same resolution. An analysis of the affinities of structural analogues of HupA, correlated with their interactions with the protein, shows the importance of individual hydrophobic interactions between HupA and aromatic residues in the active-site gorge of AChE.


    Related Citations: 
    • Residues in Torpedo Californica Acetylcholinesterase Necessary for Processing to a Glycosyl Phosphatidylinositol-Anchored Form
      Bucht, G., Hjalmarsson, K.
      (1996) Biochim Biophys Acta 1292: 223
    • Structure and Dynamics of the Active Site Gorge of Acetylcholinesterase: Synergistic Use of Molecular Dynamics Simulation and X-Ray Crystallography
      Axelsen, P.H., Harel, M., Silman, I., Sussman, J.L.
      (1994) Protein Sci 3: 188
    • Quaternary Ligand Binding to Aromatic Residues in the Active-Site Gorge of Acetylcholinesterase
      Harel, M., Schalk, I., Ehret-Sabatier, L., Bouet, F., Goeldner, M., Hirth, C., Axelsen, P.H., Silman, I., Sussman, J.L.
      (1993) Proc Natl Acad Sci U S A 90: 9031
    • Atomic Structure of Acetylcholinesterase from Torpedo Californica: A Prototypic Acetylcholine-Binding Protein
      Sussman, J.L., Harel, M., Frolow, F., Oefner, C., Goldman, A., Toker, L., Silman, I.
      (1991) Science 253: 872
    • Purification and Crystallization of a Dimeric Form of Acetylcholinesterase from Torpedo Californica Subsequent to Solubilization with Phosphatidylinositol-Specific Phospholipase C
      Sussman, J.L., Harel, M., Frolow, F., Varon, L., Toker, L., Futerman, A.H., Silman, I.
      (1988) J Mol Biol 203: 821
    • Primary Structure of Torpedo Californica Acetylcholinesterase Deduced from its Cdna Sequence
      Schumacher, M., Camp, S., Maulet, Y., Newton, M., Macphee-Quigley, K., Taylor, S.S., Friedmann, T., Taylor, P.
      (1986) Nature 319: 407

    Organizational Affiliation

    Department of Structural Biology, Weizmann Institute of Science, Rehovot, Israel.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ACETYLCHOLINESTERASE
A
537Tetronarce californicaMutation(s): 0 
Gene Names: ache
EC: 3.1.1.7
Find proteins for P04058 (Tetronarce californica)
Go to UniProtKB:  P04058
Protein Feature View
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ACH
Query on ACH

Download CCD File 
A
ACETYLCHOLINE
C7 H16 N O2
OIPILFWXSMYKGL-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.199 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 112.41α = 90
b = 112.41β = 90
c = 136.7γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1996-11-08
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2016-06-22
    Changes: Derived calculations