1AMN

TRANSITION STATE ANALOG: ACETYLCHOLINESTERASE COMPLEXED WITH M-(N,N,N-TRIMETHYLAMMONIO)TRIFLUOROACETOPHENONE

PDB DOI: https://doi.org/10.2210/pdb1AMN/pdb

Classification: HYDROLASE (SERINE ESTERASE)
Organism(s): Tetronarce californica
Mutation(s): No

Deposited: 1996-02-13 Released: 1996-04-03
Deposition Author(s): Harel, M., Silman, I., Sussman, J.L.

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.80 Å
R-Value Free: 0.235
R-Value Work: 0.188
R-Value Observed: 0.188

wwPDB Validation 3D Report Full Report

Ligand Structure Quality Assessment

This is version 1.3 of the entry. See complete history.

Literature

The X-ray structure of a transition state analog complex reveals the molecular origins of the catalytic power and substrate specificity of acetylcholinesterase.

Harel, M., Quinn, D.M., Nair, H.K., Silman, I., Sussman, J.L.

(1996) J Am Chem Soc 118: 2340-2346

Macromolecule Content

Total Structure Weight: 61.08 kDa
Atom Count: 4,270
Modelled Residue Count: 526
Deposited Residue Count: 537
Unique protein chains: 1

Macromolecules

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(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
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
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	P04058
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
NAF Query on NAF Download Ideal Coordinates CCD File SDF format, chain C [auth A] MOL2 format, chain C [auth A] mmCIF format, chain C [auth A]	C [auth A]	M-(N,N,N-TRIMETHYLAMMONIO)-2,2,2-TRIFLUORO-1,1-DIHYDROXYETHYLBENZENE C₁₁ H₁₅ F₃ N O₂ KGVDBJQLTHWAJF-UHFFFAOYSA-N		Interactions Focus chain C [auth A] Interactions & Density Focus chain C [auth A]
SO4 Query on SO4 Download Ideal Coordinates CCD File SDF format, chain B [auth A] MOL2 format, chain B [auth A] mmCIF format, chain B [auth A]	B [auth A]	SULFATE ION O₄ S QAOWNCQODCNURD-UHFFFAOYSA-L		Interactions Focus chain B [auth A] Interactions & Density Focus chain B [auth A]

Binding Affinity Annotations
ID	Source	Binding Affinity
NAF	PDBBind: 1AMN	Ki: 1.50e-5 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 2.80 Å
R-Value Free: 0.235
R-Value Work: 0.188
R-Value Observed: 0.188
Space Group: P 3₁ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 113.54	α = 90
b = 113.54	β = 90
c = 137.53	γ = 120

Software Package:

Software Name	Purpose
XDS	data scaling
X-PLOR	model building
X-PLOR	refinement
XDS	data reduction
X-PLOR	phasing

Structure Validation

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Ligand Structure Quality Assessment

Entry History

Deposition Data

Released Date: 1996-04-03

Deposition Author(s):

Revision History (Full details and data files)

Version 1.0: 1996-04-03
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: 2021-06-02
Changes: Derived calculations

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.