2NSE

BOVINE ENDOTHELIAL NITRIC OXIDE SYNTHASE SUBSTRATE COMPLEX

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.34 Å
  • R-Value Free: 0.305 
  • R-Value Work: 0.216 
  • R-Value Observed: 0.216 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

Crystal structure of constitutive endothelial nitric oxide synthase: a paradigm for pterin function involving a novel metal center.

Raman, C.S., Li, H., Martasek, P., Kral, V., Masters, B.S., Poulos, T.L.

(1998) Cell 95: 939-950

  • DOI: 10.1016/s0092-8674(00)81718-3
  • Primary Citation of Related Structures:  
    1NSE, 2NSE, 3NSE, 4NSE

  • PubMed Abstract: 

    • Nitric oxide, a key signaling molecule, is produced by a family of enzymes collectively called nitric oxide synthases (NOS). Here, we report the crystal structure of the heme domain of endothelial NOS in tetrahydrobiopterin (H4B)-free and -bound forms at 1 ...

    Nitric oxide, a key signaling molecule, is produced by a family of enzymes collectively called nitric oxide synthases (NOS). Here, we report the crystal structure of the heme domain of endothelial NOS in tetrahydrobiopterin (H4B)-free and -bound forms at 1.95 A and 1.9 A resolution, respectively. In both structures a zinc ion is tetrahedrally coordinated to pairs of symmetry-related cysteine residues at the dimer interface. The phylogenetically conserved Cys-(X)4-Cys motif and its strategic location establish a structural role for the metal center in maintaining the integrity of the H4B-binding site. The unexpected recognition of the substrate, L-arginine, at the H4B site indicates that this site is poised to stabilize a positively charged pterin ring and suggests a model involving a cationic pterin radical in the catalytic cycle.

    Related Citations: 
    • Structure of Nitric Oxide Synthase Oxygenase Dimer with Pterin and Substrate
      Crane, B.R., Arvai, A.S., Ghosh, D.K., Wu, C., Getzoff, E.D., Stuehr, D.J., Tainer, J.A.
      (1998) Science 279: 2121
    • 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
    Organizational Affiliation: 

    Department of Molecular Biology and Biochemistry, University of California, Irvine 92697-3900, USA.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
NITRIC OXIDE SYNTHASEA, B444Bos taurusMutation(s): 0 
Gene Names: NOS3
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
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 6 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HEM
Query on HEM
Download Ideal Coordinates CCD File 
E [auth A],
J [auth B]		PROTOPORPHYRIN IX CONTAINING FE
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L		 Ligand Interaction
H4B
Query on H4B
Download Ideal Coordinates CCD File 
F [auth A],
K [auth B]		5,6,7,8-TETRAHYDROBIOPTERIN
C9 H15 N5 O3
FNKQXYHWGSIFBK-RPDRRWSUSA-N		 Ligand Interaction
ARG
Query on ARG
Download Ideal Coordinates CCD File 
D [auth A],
I [auth B]		ARGININE
C6 H15 N4 O2
ODKSFYDXXFIFQN-BYPYZUCNSA-O		 Ligand Interaction
CAC
Query on CAC
Download Ideal Coordinates CCD File 
C [auth A],
G [auth B]		CACODYLATE ION
C2 H6 As O2
OGGXGZAMXPVRFZ-UHFFFAOYSA-M		 Ligand Interaction
GOL
Query on GOL
Download Ideal Coordinates CCD File 
L [auth B]GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N		 Ligand Interaction
ZN
Query on ZN
Download Ideal Coordinates CCD File 
H [auth B]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.34 Å
  • R-Value Free: 0.305 
  • R-Value Work: 0.216 
  • R-Value Observed: 0.216 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 58.06α = 90
b = 106.38β = 90
c = 156.38γ = 90
Software Package:
Software NamePurpose
DPSdata collection
SCALAdata scaling
SHARPphasing
X-PLORmodel building
X-PLORrefinement
DPSdata reduction
CCP4data scaling
X-PLORphasing

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1999-05-25
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Non-polymer description, Version format compliance