5G0O

Structure of rat neuronal nitric oxide synthase D597N mutant heme domain in complex with 4-METHYL-6-(2-(5-(4-METHYLPIPERAZIN-1-YL) PYRIDIN-3-YL)ETHYL)PYRIDIN-2-AMINE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.193 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Electrostatic Control of Isoform Selective Inhibitor Binding in Nitric Oxide Synthase.

Li, H.Wang, H.Kang, S.Silverman, R.B.Poulos, T.L.

(2016) Biochemistry 55: 3702

  • DOI: 10.1021/acs.biochem.6b00261
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Development of potent and isoform selective nitric oxide synthase (NOS) inhibitors is challenging because of the structural similarity in the heme active sites. One amino acid difference between NOS isoforms, Asp597 in rat neuronal NOS (nNOS) versus ...

    Development of potent and isoform selective nitric oxide synthase (NOS) inhibitors is challenging because of the structural similarity in the heme active sites. One amino acid difference between NOS isoforms, Asp597 in rat neuronal NOS (nNOS) versus Asn368 in bovine endothelial NOS (eNOS), has been identified as the structural basis for why some dipeptide amide inhibitors bind more tightly to nNOS than to eNOS. We now have found that the same amino acid variation is responsible for substantially different binding modes and affinity for a new class of aminopyridine-based inhibitors.


    Organizational Affiliation

    Departments of Molecular Biology and Biochemistry, Pharmaceutical Sciences, and Chemistry, University of California , Irvine, California 92697-3900, United States.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
NITRIC OXIDE SYNTHASE, BRAIN
A, B
422Rattus norvegicusMutation(s): 1 
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

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

Download SDF File 
Download CCD File 
A, B
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
W64
Query on W64

Download SDF File 
Download CCD File 
A, B
4-methyl-6-(2-(5-(4-methylpiperazin-1-yl)pyridin-3-yl)ethyl)pyridin-2-amine
C18 H25 N5
QJETXLUKROHQMG-UHFFFAOYSA-N
 Ligand Interaction
HEM
Query on HEM

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

Download SDF File 
Download CCD File 
A, B
5,6,7,8-TETRAHYDROBIOPTERIN
C9 H15 N5 O3
FNKQXYHWGSIFBK-RPDRRWSUSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
W64Ki: 42.6 - 748 nM (99) BINDINGDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.193 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 51.700α = 90.00
b = 110.710β = 90.00
c = 164.170γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
Aimlessdata scaling
MOSFLMdata reduction
REFMACphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2016-03-21 
  • Released Date: 2016-06-15 
  • Deposition Author(s): Li, H., Poulos, T.L.

Revision History 

  • Version 1.0: 2016-06-15
    Type: Initial release
  • Version 1.1: 2016-07-20
    Type: Database references