5TYK

alpha-esterase-7 in complex with 3-chloro-4-[(2-fluorophenyl)methoxy]phenylborinic acid


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.187 
  • R-Value Observed: 0.189 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Overcoming insecticide resistance through computational inhibitor design.

Correy, G.J.Zaidman, D.Harmelin, A.Carvalho, S.Mabbitt, P.D.Calaora, V.James, P.J.Kotze, A.C.Jackson, C.J.London, N.

(2019) Proc Natl Acad Sci U S A 116: 21012-21021

  • DOI: 10.1073/pnas.1909130116
  • Primary Citation of Related Structures:  
    5TYJ, 5TYK, 5TYL, 5TYM, 5TYN, 5TYO, 5TYP

  • PubMed Abstract: 
  • Insecticides allow control of agricultural pests and disease vectors and are vital for global food security and health. The evolution of resistance to insecticides, such as organophosphates (OPs), is a serious and growing concern. OP resistance often involves sequestration or hydrolysis of OPs by carboxylesterases ...

    Insecticides allow control of agricultural pests and disease vectors and are vital for global food security and health. The evolution of resistance to insecticides, such as organophosphates (OPs), is a serious and growing concern. OP resistance often involves sequestration or hydrolysis of OPs by carboxylesterases. Inhibiting carboxylesterases could, therefore, restore the effectiveness of OPs for which resistance has evolved. Here, we use covalent virtual screening to produce nano-/picomolar boronic acid inhibitors of the carboxylesterase αE7 from the agricultural pest Lucilia cuprina as well as a common Gly137Asp αE7 mutant that confers OP resistance. These inhibitors, with high selectivity against human acetylcholinesterase and low to no toxicity in human cells and in mice, act synergistically with the OPs diazinon and malathion to reduce the amount of OP required to kill L. cuprina by up to 16-fold and abolish resistance. The compounds exhibit broad utility in significantly potentiating another OP, chlorpyrifos, against the common pest, the peach-potato aphid ( Myzus persicae ). These compounds represent a solution to OP resistance as well as to environmental concerns regarding overuse of OPs, allowing significant reduction of use without compromising efficacy.


    Organizational Affiliation

    Department of Organic Chemistry, The Weizmann Institute of Science, 76100 Rehovot, Israel; colin.jackson@anu.edu.au nir.london@weizmann.ac.il.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Carboxylic ester hydrolaseA577Lucilia cuprinaMutation(s): 6 
Gene Names: LcaE7
EC: 3.1.1
UniProt
Find proteins for Q25252 (Lucilia cuprina)
Explore Q25252 
Go to UniProtKB:  Q25252
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ25252
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
7N4
Query on 7N4

Download Ideal Coordinates CCD File 
B [auth A]{3-chloro-4-[(2-fluorophenyl)methoxy]phenyl}borinic acid
C13 H11 B Cl F O2
XKCHKRXBHQBTGI-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.187 
  • R-Value Observed: 0.189 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 47.799α = 90
b = 100.792β = 90
c = 221.818γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XDSdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-12-06
    Type: Initial release
  • Version 1.1: 2019-10-09
    Changes: Data collection, Database references
  • Version 1.2: 2019-11-13
    Changes: Database references