RCSB PDB - 8ORC: Mus Musculus Acetylcholinesterase in complex with AL237

 8ORC

Mus Musculus Acetylcholinesterase in complex with AL237


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.186 

Starting Model: experimental
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Ligand Structure Quality Assessment 

Created with Raphaël 2.3.0Worse 01 BetterLigand structure goodness of fit to experimental dataBest fitted VY8Click on this verticalbar to view details

This is version 1.2 of the entry. See complete history


Literature

Enzyme Dynamics Determine the Potency and Selectivity of Inhibitors Targeting Disease-Transmitting Mosquitoes.

Kumari, R.Lindgren, C.Kumar, R.Forsgren, N.Andersson, C.D.Ekstrom, F.Linusson, A.

(2024) ACS Infect Dis 10: 3664-3680

  • DOI: https://doi.org/10.1021/acsinfecdis.4c00531
  • Primary Citation of Related Structures:  
    8ORC

  • PubMed Abstract: 

    Vector control of mosquitoes with insecticides is an important tool for preventing the spread of mosquito-borne diseases including malaria, dengue, chikungunya, and Zika. Development of active ingredients for insecticides are urgently needed because existing agents exhibit off-target toxicity and are subject to increasing resistance. We therefore seek to develop noncovalent inhibitors of the validated insecticidal target acetylcholinesterase 1 (AChE1) from mosquitoes. Here we use molecular dynamics simulations to identify structural properties essential for the potency of reversible inhibitors targeting AChE1 from Anopheles gambiae ( Ag AChE1), the malaria-transmitting mosquito, and for selectivity relative to the vertebrate Mus musculus AChE ( m AChE). We show that the collective motions of apo Ag AChE1 and m AChE differ, with Ag AChE1 exhibiting less dynamic movement. Opening and closing of the gorge, which regulates access to the catalytic triad, is enabled by different mechanisms in the two species, which could be linked to their differing amino acid sequences. Inhibitor binding reduced the overall magnitude of dynamics of AChE. In particular, more potent inhibitors reduced the flexibility of the Ω loop at the entrance of the gorge. The selectivity of inhibitors for Ag AChE1 over m AChE derives from the positioning of the α-helix lining the binding gorge. Our findings emphasize the need to consider dynamics when developing inhibitors targeting this enzyme and highlight factors needed to create potent and selective Ag AChE1 inhibitors that could serve as active ingredients to combat disease-transmitting mosquitoes.


  • Organizational Affiliation

    Department of Chemistry, Umeå University, Umeå SE-90187, Sweden.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Acetylcholinesterase
A, B
543Mus musculusMutation(s): 0 
Gene Names: Ache
EC: 3.1.1.7
UniProt & NIH Common Fund Data Resources
Find proteins for P21836 (Mus musculus)
Explore P21836 
Go to UniProtKB:  P21836
IMPC:  MGI:87876
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP21836
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 5 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
7PG
Query on 7PG

Download Ideal Coordinates CCD File 
I [auth B]2,5,8,11,14,17,20,23-OCTAOXAPENTACOSAN-25-OL
C17 H36 O9
SZGNWRSFHADOMY-UHFFFAOYSA-N
VY8 (Subject of Investigation/LOI)
Query on VY8

Download Ideal Coordinates CCD File 
C [auth A],
J [auth B]
1-[2-(dimethylamino)ethyl]-3-(2-methoxyphenyl)thiourea
C12 H19 N3 O S
WGGARZSAXKSVFS-UHFFFAOYSA-N
TOE
Query on TOE

Download Ideal Coordinates CCD File 
G [auth A],
H [auth A]
2-[2-(2-METHOXY-ETHOXY)-ETHOXY]-ETHOXYL
C7 H16 O4
JLGLQAWTXXGVEM-UHFFFAOYSA-N
PG0
Query on PG0

Download Ideal Coordinates CCD File 
D [auth A],
K [auth B],
L [auth B],
M [auth B]
2-(2-METHOXYETHOXY)ETHANOL
C5 H12 O3
SBASXUCJHJRPEV-UHFFFAOYSA-N
MXE
Query on MXE

Download Ideal Coordinates CCD File 
E [auth A],
F [auth A],
N [auth B],
O [auth B],
P [auth B]
2-METHOXYETHANOL
C3 H8 O2
XNWFRZJHXBZDAG-UHFFFAOYSA-N
Binding Affinity Annotations 
IDSourceBinding Affinity
VY8 BindingDB:  8ORC IC50: 1.20e+5 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.186 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 79.606α = 90
b = 112.113β = 90
c = 226.605γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 

Created with Raphaël 2.3.0Worse 01 BetterLigand structure goodness of fit to experimental dataBest fitted VY8Click on this verticalbar to view details

Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Other government--

Revision History  (Full details and data files)

  • Version 1.0: 2024-04-24
    Type: Initial release
  • Version 1.1: 2024-10-02
    Changes: Database references
  • Version 1.2: 2024-10-23
    Changes: Database references, Structure summary