4B83

Mus musculus Acetylcholinesterase in complex with N-(2-Diethylamino- ethyl)-3-methoxy-benzenesulfonamide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.194 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Divergent Structure-Activity Relationships of Structurally Similar Acetylcholinesterase Inhibitors.

Andersson, C.D.Forsgren, N.Akfur, C.Allgardsson, A.Berg, L.Engdahl, C.Qian, W.Ekstrom, F.J.Linusson, A.

(2013) J Med Chem 56: 7615

  • DOI: 10.1021/jm400990p
  • Primary Citation of Related Structures:  
    4B7Z, 4B82, 4B83, 4B84, 4B85, 4B80, 4B81, 4BTL

  • PubMed Abstract: 
  • The molecular interactions between the enzyme acetylcholinesterase (AChE) and two compound classes consisting of N-[2-(diethylamino)ethyl]benzenesulfonamides and N-[2-(diethylamino)ethyl]benzenemethanesulfonamides have been investigated using organic synthesis, enzymatic assays, X-ray crystallography, and thermodynamic profiling ...

    The molecular interactions between the enzyme acetylcholinesterase (AChE) and two compound classes consisting of N-[2-(diethylamino)ethyl]benzenesulfonamides and N-[2-(diethylamino)ethyl]benzenemethanesulfonamides have been investigated using organic synthesis, enzymatic assays, X-ray crystallography, and thermodynamic profiling. The inhibitors' aromatic properties were varied to establish structure-activity relationships (SAR) between the inhibitors and the peripheral anionic site (PAS) of AChE. The two structurally similar compound classes proved to have distinctly divergent SARs in terms of their inhibition capacity of AChE. Eight X-ray structures revealed that the two sets have different conformations in PAS. Furthermore, thermodynamic profiles of the binding between compounds and AChE revealed class-dependent differences of the entropy/enthalpy contributions to the free energy of binding. Further development of the entropy-favored compound class resulted in the synthesis of the most potent inhibitor and an extension beyond the established SARs. The divergent SARs will be utilized to develop reversible inhibitors of AChE into reactivators of nerve agent-inhibited AChE.


    Organizational Affiliation

    Department of Chemistry, Umeå University , SE-901 87 Umeå, Sweden.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ACETYLCHOLINESTERASEA, B548Mus musculusMutation(s): 0 
Gene Names: Ache
EC: 3.1.1.7
Find proteins for P21836 (Mus musculus)
Explore P21836 
Go to UniProtKB:  P21836
NIH Common Fund Data Resources
IMPC:  MGI:87876
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 7 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PE8
Query on PE8

Download Ideal Coordinates CCD File 
P [auth A]3,6,9,12,15,18,21-HEPTAOXATRICOSANE-1,23-DIOL
C16 H34 O9
GLZWNFNQMJAZGY-UHFFFAOYSA-N
 Ligand Interaction
B3V
Query on B3V

Download Ideal Coordinates CCD File 
C [auth A], M [auth A], R [auth B], W [auth B]N-[2-(diethylamino)ethyl]-3-methoxy-benzenesulfonamide
C13 H22 N2 O3 S
UWYTYLDQZQFXBP-UHFFFAOYSA-N
 Ligand Interaction
NAG
Query on NAG

Download Ideal Coordinates CCD File 
F [auth A], I [auth A], T [auth B]2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
PG4
Query on PG4

Download Ideal Coordinates CCD File 
Z [auth B]TETRAETHYLENE GLYCOL
C8 H18 O5
UWHCKJMYHZGTIT-UHFFFAOYSA-N
 Ligand Interaction
PEG
Query on PEG

Download Ideal Coordinates CCD File 
G [auth A], H [auth A], U [auth B]DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

Download Ideal Coordinates CCD File 
N [auth A], X [auth B]SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
EDO
Query on EDO

Download Ideal Coordinates CCD File 
AA [auth B] , BA [auth B] , D [auth A] , E [auth A] , J [auth A] , K [auth A] , L [auth A] , O [auth A] , 
AA [auth B],  BA [auth B],  D [auth A],  E [auth A],  J [auth A],  K [auth A],  L [auth A],  O [auth A],  Q [auth B],  S [auth B],  V [auth B],  Y [auth B]
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
B3VIC50 :  7000   nM  PDBBind
B3VIC50:  7000   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.194 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 79.583α = 90
b = 111.856β = 90
c = 227.783γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
SCALAdata scaling
REFMACphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-09-04
    Type: Initial release
  • Version 1.1: 2013-09-11
    Changes: Database references
  • Version 1.2: 2013-10-30
    Changes: Database references
  • Version 1.3: 2018-01-17
    Changes: Data collection
  • Version 1.4: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Other, Structure summary