1NOC

MURINE INDUCIBLE NITRIC OXIDE SYNTHASE OXYGENASE DOMAIN (DELTA 114) COMPLEXED WITH TYPE I E. COLI CHLORAMPHENICOL ACETYL TRANSFERASE AND IMIDAZOLE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.221 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The structure of nitric oxide synthase oxygenase domain and inhibitor complexes.

Crane, B.R.Arvai, A.S.Gachhui, R.Wu, C.Ghosh, D.K.Getzoff, E.D.Stuehr, D.J.Tainer, J.A.

(1997) Science 278: 425-431

  • Primary Citation of Related Structures:  1NOS, 2NOS
  • Also Cited By: 1DWV, 1DWW, 1DWX, 1QOM, 2ORQ, 2ORR, 2ORS, 2ORT

  • PubMed Abstract: 
  • The nitric oxide synthase oxygenase domain (NOSox) oxidizes arginine to synthesize the cellular signal and defensive cytotoxin nitric oxide (NO). Crystal structures determined for cytokine-inducible NOSox reveal an unusual fold and heme environment f ...

    The nitric oxide synthase oxygenase domain (NOSox) oxidizes arginine to synthesize the cellular signal and defensive cytotoxin nitric oxide (NO). Crystal structures determined for cytokine-inducible NOSox reveal an unusual fold and heme environment for stabilization of activated oxygen intermediates key for catalysis. A winged beta sheet engenders a curved alpha-beta domain resembling a baseball catcher's mitt with heme clasped in the palm. The location of exposed hydrophobic residues and the results of mutational analysis place the dimer interface adjacent to the heme-binding pocket. Juxtaposed hydrophobic O2- and polar L-arginine-binding sites occupied by imidazole and aminoguanidine, respectively, provide a template for designing dual-function inhibitors and imply substrate-assisted catalysis.


    Related Citations: 
    • Characterization of the Inducible Nitric Oxide Synthase Oxygenase Domain Identifies a 49 Amino Acid Segment Required for Subunit Dimerization and Tetrahydrobiopterin Interaction
      Ghosh, D.K.,Wu, C.,Pitters, E.,Moloney, M.,Werner, E.R.,Mayer, B.,Stuehr, D.J.
      (1997) Biochemistry 36: 10609


    Organizational Affiliation

    Department of Molecular Biology and the Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, CA 92037, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
INDUCIBLE NITRIC OXIDE SYNTHASE
A
388Mus musculusGene Names: Nos2 (Inosl)
EC: 1.14.13.39
Find proteins for P29477 (Mus musculus)
Go to UniProtKB:  P29477
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
TYPE 1 CHLORAMPHENICOL ACETYLTRANSFERASE
B
219Escherichia coliGene Names: cat
EC: 2.3.1.28
Find proteins for P62577 (Escherichia coli)
Go to UniProtKB:  P62577
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HEM
Query on HEM

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

Download SDF File 
Download CCD File 
A
IMIDAZOLE
C3 H5 N2
RAXXELZNTBOGNW-UHFFFAOYSA-O
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.221 
  • Space Group: P 21 3
Unit Cell:
Length (Å)Angle (°)
a = 147.500α = 90.00
b = 147.500β = 90.00
c = 147.500γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement
DENZOdata reduction
X-PLORphasing
X-PLORmodel building
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-10-14
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance