9NSE

BOVINE ENDOTHELIAL NITRIC OXIDE SYNTHASE, ETHYL-ISOSELENOUREA COMPLEX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.24 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.197 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Mapping the active site polarity in structures of endothelial nitric oxide synthase heme domain complexed with isothioureas.

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

(2000) J.Inorg.Biochem. 81: 133-139

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Analyzing the active site topology and plasticity of nitric oxide synthase (NOS) and understanding enzyme-drug interactions are crucial for the development of potent, isoform-selective NOS inhibitors. A small hydrophobic pocket in the active site is ...

    Analyzing the active site topology and plasticity of nitric oxide synthase (NOS) and understanding enzyme-drug interactions are crucial for the development of potent, isoform-selective NOS inhibitors. A small hydrophobic pocket in the active site is identified in the bovine eNOS heme domain structures complexed with potent isothiourea inhibitors: seleno analogue of S-ethyl-isothiourea, S-isopropyl-isothiourea, and 2-aminothiazoline, respectively. These structures reveal the importance of nonpolar van der Waals contacts in addition to the well-known hydrogen bonding interactions between inhibitor and enzyme. The scaffold of a potent NOS inhibitor should be capable of donating hydrogen bonds to as well as making nonpolar contacts with amino acids in the NOS active site.


    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
    • Crystal Structure of Constitutive Endothelial Nitric Oxide: A Paradigm for Pterin Function Involving a Novel Metal Center
      Raman, C.S.,Li, H.,Martasek, P.,Kral, V.,Masters, B.S.S.,Poulos, T.L.
      (1998) Cell 95: 939
    • The Structure of Nitric Oxide Synthase Oxygenase Domain and Inhibitor Complex
      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 & Biochemistry and Physiology & Biophysics and Program in Macromolecular Structure, University of California, Irvine 92697-3900, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (NITRIC OXIDE SYNTHASE)
A, B
444Bos taurusMutation(s): 0 
Gene Names: NOS3
EC: 1.14.13.39
Find proteins for P29473 (Bos taurus)
Go to Gene View: NOS3
Go to UniProtKB:  P29473
Small Molecules
Ligands 7 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

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

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A, B
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
CAD
Query on CAD

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A, B
CACODYLIC ACID
HYDROXYDIMETHYLARSINE OXIDE
C2 H7 As O2
OGGXGZAMXPVRFZ-UHFFFAOYSA-N
 Ligand Interaction
GOL
Query on GOL

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A, B
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
HEM
Query on HEM

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

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A, B
SE-ETHYL-ISOSELENOUREA
C3 H8 N2 Se
FFKYNFXDBBLWGF-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
ISUKi: 39 nM BINDINGMOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.24 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.197 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 57.740α = 90.00
b = 106.360β = 90.00
c = 156.300γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement
DENZOdata reduction
X-PLORmodel building
SCALEPACKdata scaling
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-10-25
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance