7RB7

Room temperature structure of hAChE in complex with substrate analog 4K-TMA and MMB4 oxime

• PDB DOI: https://doi.org/10.2210/pdb7RB7/pdb

• Classification: HYDROLASE
• Organism(s): Homo sapiens
• Expression System: Homo sapiens
• Mutation(s): No 


• Deposited: 2021-07-05 Released: 2021-09-22 
• Deposition Author(s): Kovalevsky, A., Gerlits, O., Radic, Z.
• Funding Organization(s): National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.60 Å
• R-Value Free: 0.214 
• R-Value Work: 0.190 
• R-Value Observed: 0.191 

Starting Model: experimental

Literature

Room temperature crystallography of human acetylcholinesterase bound to a substrate analogue 4K-TMA: Towards a neutron structure

Gerlits, O., Blakeley, M.P., Keen, D.A., Radic, Z., Kovalevsky, A.

(2021) Curr Res Struct Biol 3: 206-215

• DOI: https://doi.org/10.1016/j.crstbi.2021.08.003

Biological Assembly 1  

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

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 121.42 kDa 
• Atom Count: 8,609 
• Modelled Residue Count: 1,080 
• Deposited Residue Count: 1,100 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Acetylcholinesterase	A, B	550	Homo sapiens	Mutation(s): 0  Gene Names: ACHE EC: 3.1.1.7
UniProt & NIH Common Fund Data Resources
Find proteins for P22303 (Homo sapiens) Explore P22303  Go to UniProtKB:  P22303
PHAROS:  P22303 GTEx:  ENSG00000087085

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
3VI (Subject of Investigation/LOI)	D [auth A], F [auth B]	1,1'-methylenebis{4-[(E)-(hydroxyimino)methyl]pyridin-1-ium} C13 H14 N4 O2 CMMIGIRGSXYBDN-UHFFFAOYSA-P
NWA (Subject of Investigation/LOI)	C [auth A], E [auth B]	4,4-DIHYDROXY-N,N,N-TRIMETHYLPENTAN-1-AMINIUM C8 H20 N O2 WEYSSHXEYINXQE-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.60 Å
• R-Value Free: 0.214 
• R-Value Work: 0.190 
• R-Value Observed: 0.191 
• Space Group: P 3₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 125.462	α = 90
b = 125.462	β = 90
c = 130.948	γ = 120

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-3000	data reduction
HKL-3000	data scaling
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2021-09-22 
Deposition Author(s): Kovalevsky, A., Gerlits, O., Radic, Z.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)	United States	U01 NS083451

Revision History  

• Version 1.0: 2021-09-22
  Type: Initial release
  
• Version 1.1: 2023-10-18
  Changes: Data collection, Refinement description
• Version 1.2: 2024-11-06
  Changes: Structure summary