4D33

Structure of bovine endothelial nitric oxide synthase heme domain in complex with (N1-(2-(1H-imidazol-1-yl)pyrimidin-4-yl)-N2-(3- fluorophenethyl)ethane-1,2-diamine


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.09 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.165 
  • R-Value Observed: 0.167 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Novel 2,4-Disubstituted Pyrimidines as Potent, Selective, and Cell-Permeable Inhibitors of Neuronal Nitric Oxide Synthase.

Mukherjee, P.Li, H.Sevrioukova, I.Chreifi, G.Martasek, P.Roman, L.J.Poulos, T.L.Silverman, R.B.

(2015) J Med Chem 58: 1067

  • DOI: https://doi.org/10.1021/jm501719e
  • Primary Citation of Related Structures:  
    4D2Y, 4D2Z, 4D30, 4D31, 4D32, 4D33, 4D34, 4D35, 4D36, 4D37, 4D38, 4D39, 4D3A, 4D3B, 4UCH, 4V3U, 4V3V, 4V3W, 4V3X, 4V3Y, 4V3Z

  • PubMed Abstract: 

    Selective inhibition of neuronal nitric oxide synthase (nNOS) is an important therapeutic approach to target neurodegenerative disorders. However, the majority of the nNOS inhibitors developed are arginine mimetics and, therefore, suffer from poor bioavailability. We designed a novel strategy to combine a more pharmacokinetically favorable 2-imidazolylpyrimidine head with promising structural components from previous inhibitors. In conjunction with extensive structure-activity studies, several highly potent and selective inhibitors of nNOS were discovered. X-ray crystallographic analysis reveals that these type II inhibitors utilize the same hydrophobic pocket to gain strong inhibitory potency (13), as well as high isoform selectivity. Interestingly, select compounds from this series (9) showed good permeability and low efflux in a Caco-2 assay, suggesting potential oral bioavailability, and exhibited minimal off-target binding to 50 central nervous system receptors. Furthermore, even with heme-coordinating groups in the molecule, modifying other pharmacophoric fragments minimized undesirable inhibition of cytochrome P450s from human liver microsomes.


  • Organizational Affiliation

    Department of Chemistry, Department of Molecular Biosciences, Chemistry of Life Processes Institute, Center for Molecular Innovation and Drug Discovery, Northwestern University , Evanston, Illinois 60208-3113, United States.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
NITRIC OXIDE SYNTHASE, ENDOTHELIAL
A, B
443Bos taurusMutation(s): 0 
EC: 1.14.13.39
UniProt
Find proteins for P29473 (Bos taurus)
Explore P29473 
Go to UniProtKB:  P29473
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP29473
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 8 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
HEM
Query on HEM

Download Ideal Coordinates CCD File 
C [auth A],
J [auth B]
PROTOPORPHYRIN IX CONTAINING FE
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
6J0
Query on 6J0

Download Ideal Coordinates CCD File 
E [auth A],
L [auth B]
N-[2-(3-fluorophenyl)ethyl]-N'-[2-(1H-imidazol-1-yl)pyrimidin-4-yl]ethane-1,2-diamine
C17 H19 F N6
YCRYBRYYCUMKOD-UHFFFAOYSA-N
H4B
Query on H4B

Download Ideal Coordinates CCD File 
D [auth A],
K [auth B]
5,6,7,8-TETRAHYDROBIOPTERIN
C9 H15 N5 O3
FNKQXYHWGSIFBK-RPDRRWSUSA-N
MTL
Query on MTL

Download Ideal Coordinates CCD File 
G [auth A],
N [auth B]
D-MANNITOL
C6 H14 O6
FBPFZTCFMRRESA-KVTDHHQDSA-N
GOL
Query on GOL

Download Ideal Coordinates CCD File 
H [auth A],
O [auth B]
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
BME
Query on BME

Download Ideal Coordinates CCD File 
I [auth A]BETA-MERCAPTOETHANOL
C2 H6 O S
DGVVWUTYPXICAM-UHFFFAOYSA-N
ZN
Query on ZN

Download Ideal Coordinates CCD File 
P [auth B]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
ACT
Query on ACT

Download Ideal Coordinates CCD File 
F [auth A],
M [auth B]
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
Binding Affinity Annotations 
IDSourceBinding Affinity
6J0 BindingDB:  4D33 Ki: 4.00e+4 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.09 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.165 
  • R-Value Observed: 0.167 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 56.936α = 90
b = 105.126β = 90
c = 154.388γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
SCALEPACKdata scaling
REFMACphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-12-24
    Type: Initial release
  • Version 1.1: 2015-03-04
    Changes: Data collection, Database references
  • Version 1.2: 2024-05-08
    Changes: Data collection, Database references, Derived calculations, Other