4JSG

Structure of rat neuronal nitric oxide synthase heme domain in complex with 6-((3-(3-aminopropoxy)phenoxy)methyl)-4-methylpyridin-2-amine


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.94 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.189 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

In search of potent and selective inhibitors of neuronal nitric oxide synthase with more simple structures.

Jing, Q.Li, H.Fang, J.Roman, L.J.Martasek, P.Poulos, T.L.Silverman, R.B.

(2013) Bioorg.Med.Chem. 21: 5323-5331

  • DOI: 10.1016/j.bmc.2013.06.014
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • In certain neurodegenerative diseases damaging levels of nitric oxide (NO) are produced by neuronal nitric oxide synthase (nNOS). It, therefore, is important to develop inhibitors selective for nNOS that do not interfere with other NOS isoforms, espe ...

    In certain neurodegenerative diseases damaging levels of nitric oxide (NO) are produced by neuronal nitric oxide synthase (nNOS). It, therefore, is important to develop inhibitors selective for nNOS that do not interfere with other NOS isoforms, especially endothelial NOS (eNOS), which is critical for proper functioning of the cardiovascular system. While we have been successful in developing potent and isoform-selective inhibitors, such as lead compounds 1 and 2, the ease of synthesis and bioavailability have been problematic. Here we describe a new series of compounds including crystal structures of NOS-inhibitor complexes that integrate the advantages of easy synthesis and good biological properties compared to the lead compounds. These results provide the basis for additional structure-activity relationship (SAR) studies to guide further improvement of isozyme selective inhibitors.


    Organizational Affiliation

    Department of Chemistry, Chemistry of Life Processes Institute, Center for Molecular Innovation and Drug Discovery, Northwestern University, Evanston, IL 60208-3113, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Nitric oxide synthase, brain
A, B
422Rattus norvegicusMutation(s): 0 
Gene Names: Nos1 (Bnos)
EC: 1.14.13.39
Find proteins for P29476 (Rattus norvegicus)
Go to UniProtKB:  P29476
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

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Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
ACT
Query on ACT

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Download CCD File 
A, B
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
HEM
Query on HEM

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Download CCD File 
A, B
PROTOPORPHYRIN IX CONTAINING FE
HEME
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
 Ligand Interaction
H4B
Query on H4B

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Download CCD File 
A, B
5,6,7,8-TETRAHYDROBIOPTERIN
C9 H15 N5 O3
FNKQXYHWGSIFBK-RPDRRWSUSA-N
 Ligand Interaction
Q10
Query on Q10

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Download CCD File 
A, B
6-{[3-(3-aminopropoxy)phenoxy]methyl}-4-methylpyridin-2-amine
C16 H21 N3 O2
USONDHXIUNXLQT-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
Q10Ki: 60 nM (99) BINDINGDB
Q10Ki: 60 nM BINDINGMOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.94 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.189 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 52.249α = 90.00
b = 111.179β = 90.00
c = 164.178γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
Blu-Icedata collection
REFMACphasing
HKL-2000data reduction
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2013-03-22 
  • Released Date: 2013-08-07 
  • Deposition Author(s): Li, H., Poulos, T.L.

Revision History 

  • Version 1.0: 2013-08-07
    Type: Initial release
  • Version 1.1: 2013-08-21
    Type: Database references
  • Version 1.2: 2017-11-15
    Type: Refinement description