1QWC

Rat neuronal nitric oxide synthase oxygenase domain in complex with W1400 inhibitor.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.195 

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Ligand Structure Quality Assessment 


This is version 1.4 of the entry. See complete history


Literature

Structural basis for the specificity of the nitric-oxide synthase inhibitors W1400 and Nomega-propyl-L-Arg for the inducible and neuronal isoforms.

Fedorov, R.Hartmann, E.Ghosh, D.K.Schlichting, I.

(2003) J Biol Chem 278: 45818-45825

  • DOI: https://doi.org/10.1074/jbc.M306030200
  • Primary Citation of Related Structures:  
    1QW4, 1QW5, 1QW6, 1QWC

  • PubMed Abstract: 

    The high level of amino acid conservation and structural similarity in the immediate vicinity of the substrate binding sites of the oxygenase domains of the nitric-oxide synthase (NOS) isoforms (eNOSoxy, iNOSoxy, and nNOSoxy) make the interpretation of the structural basis of inhibitor isoform specificity a challenge and provide few clues for the design of new selective compounds. Crystal structures of iNOSoxy and nNOSoxy complexed with the inhibitors W1400 and Nomega-propyl-l-arginine provide a rationale for their isoform specificity. It involves differences outside the immediate active site as well as a conformational flexibility in the active site that allows the adoption of distinct conformations in response to interactions with the inhibitors. This flexibility is determined by isoform-specific residues outside the active site.


  • Organizational Affiliation

    Max Planck Institut für Molekulare Physiologie, Abteilung Biophysikalische Chemie, Otto Hahn Strasse 11, 44227 Dortmund, Germany.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Nitric-oxide synthase, brain420Rattus norvegicusMutation(s): 0 
Gene Names: NOS1 OR BNOS
EC: 1.14.13.39
UniProt
Find proteins for P29476 (Rattus norvegicus)
Explore P29476 
Go to UniProtKB:  P29476
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP29476
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.195 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 44.784α = 90
b = 108.779β = 90
c = 164.325γ = 90
Software Package:
Software NamePurpose
ProDCdata collection
XDSdata reduction
CNSrefinement
XDSdata scaling
CNSphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-12-09
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.3: 2017-10-11
    Changes: Refinement description
  • Version 1.4: 2024-02-14
    Changes: Data collection, Database references, Derived calculations