6FSE

Mus musculus acetylcholinesterase in complex with 1-(4-(4-Ethylpiperazin-1-yl)piperidin-1-yl)-2-((4'-methoxy-[1,1'-biphenyl]-4-yl)oxy)ethanone dihydrochloride (15)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.204 

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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

Noncovalent Inhibitors of Mosquito Acetylcholinesterase 1 with Resistance-Breaking Potency.

Knutsson, S.Engdahl, C.Kumari, R.Forsgren, N.Lindgren, C.Kindahl, T.Kitur, S.Wachira, L.Kamau, L.Ekstrom, F.Linusson, A.

(2018) J Med Chem 61: 10545-10557

  • DOI: 10.1021/acs.jmedchem.8b01060
  • Primary Citation of Related Structures:  
    6FSD, 6FSE

  • PubMed Abstract: 
  • Resistance development in insects significantly threatens the important benefits obtained by insecticide usage in vector control of disease-transmitting insects. Discovery of new chemical entities with insecticidal activity is highly desired in order to develop new insecticide candidates ...

    Resistance development in insects significantly threatens the important benefits obtained by insecticide usage in vector control of disease-transmitting insects. Discovery of new chemical entities with insecticidal activity is highly desired in order to develop new insecticide candidates. Here, we present the design, synthesis, and biological evaluation of phenoxyacetamide-based inhibitors of the essential enzyme acetylcholinesterase 1 (AChE1). AChE1 is a validated insecticide target to control mosquito vectors of, e.g., malaria, dengue, and Zika virus infections. The inhibitors combine a mosquito versus human AChE selectivity with a high potency also for the resistance-conferring mutation G122S; two properties that have proven challenging to combine in a single compound. Structure-activity relationship analyses and molecular dynamics simulations of inhibitor-protein complexes have provided insights that elucidate the molecular basis for these properties. We also show that the inhibitors demonstrate in vivo insecticidal activity on disease-transmitting mosquitoes. Our findings support the concept of noncovalent, selective, and resistance-breaking inhibitors of AChE1 as a promising approach for future insecticide development.


    Organizational Affiliation

    Department of Chemistry , Umeå University , SE-901 82 Umeå , Sweden.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
AcetylcholinesteraseA, B548Mus 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
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
E5K
Query on E5K

Download Ideal Coordinates CCD File 
C [auth A],
I [auth B]
1-[4-(4-ethylpiperazin-1-yl)piperidin-1-yl]-2-[4-(4-methoxyphenyl)phenoxy]ethanone
C26 H35 N3 O3
HQHBRBVCWLKIRI-UHFFFAOYSA-N
 Ligand Interaction
1PG
Query on 1PG

Download Ideal Coordinates CCD File 
D [auth A]2-(2-{2-[2-(2-METHOXY-ETHOXY)-ETHOXY]-ETHOXY}-ETHOXY)-ETHANOL
C11 H24 O6
SLNYBUIEAMRFSZ-UHFFFAOYSA-N
 Ligand Interaction
PG0
Query on PG0

Download Ideal Coordinates CCD File 
F [auth A],
G [auth A],
H [auth B]
2-(2-METHOXYETHOXY)ETHANOL
C5 H12 O3
SBASXUCJHJRPEV-UHFFFAOYSA-N
 Ligand Interaction
PEG
Query on PEG

Download Ideal Coordinates CCD File 
E [auth A]DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N
 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
E5K BindingDB:  6FSE IC50: 1.80e+4 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.204 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 79.525α = 90
b = 111.885β = 90
c = 226.535γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
SCALAdata scaling
Cootmodel building

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Swedish Research CouncilSweden2014-4218
Swedish Research CouncilSweden2014-2636

Revision History  (Full details and data files)

  • Version 1.0: 2018-10-31
    Type: Initial release
  • Version 1.1: 2019-04-24
    Changes: Data collection, Database references