4D1P

Structure of human endothelial nitric oxide synthase heme domain IN COMPLEX WITH 6-((((3S, 5R)-5-(((6-AMINO-4-METHYLPYRIDIN-2-YL)METHOXY) METHYL)PYRROLIDIN-3-YL)OXY) METHYL)-4-METHYLPYRIDIN-2-AMINE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.731 Å
  • R-Value Free: 0.186 
  • R-Value Work: 0.157 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structures of Human Constitutive Nitric Oxide Synthases

Li, H.Jamal, J.Plaza, C.Pineda, S.H.Chreifi, G.Jing, Q.Cinelli, M.A.Silverman, R.B.Poulos, T.L.

(2014) Acta Crystallogr.,Sect.D 70: 2667

  • DOI: 10.1107/S1399004714017064
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Mammals produce three isoforms of nitric oxide synthase (NOS): neuronal NOS (nNOS), inducible NOS (iNOS) and endothelial NOS (eNOS). The overproduction of NO by nNOS is associated with a number of neurodegenerative disorders; therefore, a desirable t ...

    Mammals produce three isoforms of nitric oxide synthase (NOS): neuronal NOS (nNOS), inducible NOS (iNOS) and endothelial NOS (eNOS). The overproduction of NO by nNOS is associated with a number of neurodegenerative disorders; therefore, a desirable therapeutic goal is the design of drugs that target nNOS but not the other isoforms. Crystallography, coupled with computational approaches and medicinal chemistry, has played a critical role in developing highly selective nNOS inhibitors that exhibit exceptional neuroprotective properties. For historic reasons, crystallography has focused on rat nNOS and bovine eNOS because these were available in high quality; thus, their structures have been used in structure-activity-relationship studies. Although these constitutive NOSs share more than 90% sequence identity across mammalian species for each NOS isoform, inhibitor-binding studies revealed that subtle differences near the heme active site in the same NOS isoform across species still impact enzyme-inhibitor interactions. Therefore, structures of the human constitutive NOSs are indispensible. Here, the first structure of human neuronal NOS at 2.03 Å resolution is reported and a different crystal form of human endothelial NOS is reported at 1.73 Å resolution.


    Organizational Affiliation

    Departments of Molecular Biology and Biochemistry, Pharmaceutical Sciences and Chemistry, University of California, Irvine, 517 Bison Avenue, Irvine, CA 92697-3900, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
NITRIC OXIDE SYNTHASE, ENDOTHELIAL
A, B
440Homo sapiensMutation(s): 0 
Gene Names: NOS3
EC: 1.14.13.39
Find proteins for P29474 (Homo sapiens)
Go to Gene View: NOS3
Go to UniProtKB:  P29474
Small Molecules
Ligands 8 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
Q16
Query on Q16

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A, B
6-((((3S, 5R)-5-(((6-amino-4-methylpyridin-2-yl)methoxy)methyl)pyrrolidin-3-yl)oxy)methyl)-4-methylpyridin-2-amine
C19 H27 N5 O2
NUKSCYDKRQJOFO-PBHICJAKSA-N
 Ligand Interaction
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
GOL
Query on GOL

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A
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
GD
Query on GD

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A, B
GADOLINIUM ATOM
Gd
UIWYJDYFSGRHKR-UHFFFAOYSA-N
 Ligand Interaction
BTB
Query on BTB

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A, B
2-[BIS-(2-HYDROXY-ETHYL)-AMINO]-2-HYDROXYMETHYL-PROPANE-1,3-DIOL
BIS-TRIS BUFFER
C8 H19 N O5
OWMVSZAMULFTJU-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
Q16Ki: 6727 nM (93) BINDINGDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.731 Å
  • R-Value Free: 0.186 
  • R-Value Work: 0.157 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 62.226α = 90.00
b = 110.378β = 90.00
c = 153.670γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
SCALEPACKdata scaling
PHENIXrefinement
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2014-05-02 
  • Released Date: 2014-10-15 
  • Deposition Author(s): Li, H., Poulos, T.L.

Revision History 

  • Version 1.0: 2014-10-15
    Type: Initial release
  • Version 1.1: 2014-10-22
    Type: Database references