4XUC

Synthesis and evaluation of heterocyclic catechol mimics as inhibitors of catechol-O-methyltransferase (COMT): Structure with Cmpd18 (1-(biphenyl-3-yl)-3-hydroxypyridin-4(1H)-one)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.174 
  • R-Value Observed: 0.176 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Synthesis and Evaluation of Heterocyclic Catechol Mimics as Inhibitors of Catechol-O-methyltransferase (COMT).

Harrison, S.T.Poslusney, M.S.Mulhearn, J.J.Zhao, Z.Kett, N.R.Schubert, J.W.Melamed, J.Y.Allison, T.J.Patel, S.B.Sanders, J.M.Sharma, S.Smith, R.F.Hall, D.L.Robinson, R.G.Sachs, N.A.Hutson, P.H.Wolkenberg, S.E.Barrow, J.C.

(2015) ACS Med Chem Lett 6: 318-323

  • DOI: 10.1021/ml500502d
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • 3-Hydroxy-4-pyridinones and 5-hydroxy-4-pyrimidinones were identified as inhibitors of catechol-O-methyltransferase (COMT) in a high-throughput screen. These heterocyclic catechol mimics exhibit potent inhibition of the enzyme and an improved toxicit ...

    3-Hydroxy-4-pyridinones and 5-hydroxy-4-pyrimidinones were identified as inhibitors of catechol-O-methyltransferase (COMT) in a high-throughput screen. These heterocyclic catechol mimics exhibit potent inhibition of the enzyme and an improved toxicity profile versus the marketed nitrocatechol inhibitors tolcapone and entacapone. Optimization of the series was aided by X-ray cocrystal structures of the novel inhibitors in complex with COMT and cofactors SAM and Mg(2+). The crystal structures suggest a mechanism of inhibition for these heterocyclic inhibitors distinct from previously disclosed COMT inhibitors.


    Organizational Affiliation

    Department of Medicinal Chemistry, Global Structural Biology, Chemical Modeling and Informatics, and Department of Neuroscience Research, Merck Research Laboratories , Sumneytown Pike, West Point, Pennsylvania 19486, United States.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Catechol O-methyltransferase
A
218Homo sapiensMutation(s): 1 
Gene Names: COMT
EC: 2.1.1.6
Find proteins for P21964 (Homo sapiens)
Go to UniProtKB:  P21964
NIH Common Fund Data Resources
PHAROS  P21964
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SAM
Query on SAM

Download CCD File 
A
S-ADENOSYLMETHIONINE
C15 H22 N6 O5 S
MEFKEPWMEQBLKI-FCKMPRQPSA-N
 Ligand Interaction
43G
Query on 43G

Download CCD File 
A
1-(biphenyl-3-yl)-3-hydroxypyridin-4(1H)-one
C17 H13 N O2
IAMQYYMWXQPFDC-UHFFFAOYSA-N
 Ligand Interaction
MES
Query on MES

Download CCD File 
A
2-(N-MORPHOLINO)-ETHANESULFONIC ACID
C6 H13 N O4 S
SXGZJKUKBWWHRA-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
43GIC50:  47   nM  BindingDB
43GIC50:  47   nM  Binding MOAD
43GIC50:  1100   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.174 
  • R-Value Observed: 0.176 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 43.741α = 90
b = 57.201β = 90
c = 98.182γ = 90
Software Package:
Software NamePurpose
SCALEPACKdata scaling
REFMACrefinement
PDB_EXTRACTdata extraction
HKL-2000data scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-04-15
    Type: Initial release
  • Version 1.1: 2017-11-22
    Changes: Derived calculations, Refinement description, Source and taxonomy, Structure summary