Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Standalone Viewers  
Protein Workshop | Ligand Explorer

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly Evidence: gel filtration

Biological Assembly 2  

 3D View: Structure | Electron Density | Ligand Interaction

Standalone Viewers  
Protein Workshop | Ligand Explorer

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 205571.48 
• Atom Count: 13371 
• Residue Count: 1760 
• Unique protein chains: 1

6CIE

Structure of human endothelial nitric oxide synthase heme domain in complex with N-(1-(2-(Ethyl(methyl)amino)ethyl)-1,2,3,4-tetrahydroquino-lin-6-yl)thiophene-2-carboximidamide

• DOI: 10.2210/pdb6CIE/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)


• Deposited: 2018-02-23 Released: 2018-10-31 
• Deposition Author(s): Chreifi, G., Li, H., Poulos, T.L.
• Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences 

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.95 Å
• R-Value Free: 0.262 
• R-Value Work: 0.212 

Literature

Structural Basis for Isoform Selective Nitric Oxide Synthase Inhibition by Thiophene-2-carboximidamides.

Li, H., Evenson, R.J., Chreifi, G., Silverman, R.B., Poulos, T.L.

(2018) Biochemistry 57: 6319-6325

• PubMed: 30335983 
• Primary Citation of Related Structures:  
  6CIF, 6CID, 6CIC

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Nitric oxide synthase, endothelial	A, B, C, D	440	Homo sapiens	Mutation(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
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
ZN	A, C	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
CL	A, B, C, D	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M
GOL	A, C	GLYCEROL GLYCERIN; PROPANE-1,2,3-TRIOL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
7R2	A, B, C, D	N-(1-{2-[ethyl(methyl)amino]ethyl}-1,2,3,4-tetrahydroquinolin-6-yl)thiophene-2-carboximidamide C19 H26 N4 S GDMWZTBOBNMXTL-UHFFFAOYSA-N
HEM	A, B, C, D	PROTOPORPHYRIN IX CONTAINING FE HEME C34 H32 Fe N4 O4 KABFMIBPWCXCRK-RGGAHWMASA-L
H4B	A, B, C, D	5,6,7,8-TETRAHYDROBIOPTERIN C9 H15 N5 O3 FNKQXYHWGSIFBK-RPDRRWSUSA-N
GD	A, B, C, D	GADOLINIUM ATOM Gd UIWYJDYFSGRHKR-UHFFFAOYSA-N
BTB	A, B, C, D	2-[BIS-(2-HYDROXY-ETHYL)-AMINO]-2-HYDROXYMETHYL-PROPANE-1,3-DIOL BIS-TRIS BUFFER C8 H19 N O5 OWMVSZAMULFTJU-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.95 Å
• R-Value Free: 0.262 
• R-Value Work: 0.212 
• Space Group: P 1 2₁ 1

Unit Cell:

Length (Å)	Angle (°)
a = 59.520	α = 90.00
b = 152.230	β = 90.48
c = 108.800	γ = 90.00

Software Package:

Software Name	Purpose
PHENIX	refinement
Aimless	data scaling
PHASER	phasing
iMOSFLM	data reduction

Structure Validation

Entry History & Funding Information

Deposition Data

• Deposited Date: 2018-02-23 
• Released Date: 2018-10-31 
• Deposition Author(s): Chreifi, G., Li, H., Poulos, T.L.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute of General Medical Sciences	United States	GM57353

Revision History 

• Version 1.0: 2018-10-31
  Type: Initial release
• Version 1.1: 2018-11-07
  Type: Data collection, Database references
• Version 1.2: 2018-11-21
  Type: Data collection, Database references
• Version 1.3: 2019-02-20
  Type: Author supporting evidence, Data collection