1DM8

BOVINE ENDOTHELIAL NITRIC OXIDE SYNTHASE HEME DOMAIN COMPLEXED WITH 1,2,4-TRIAZOLE-CARBOXAMIDINE (H4B BOUND)

• PDB DOI:  https://doi.org/10.2210/pdb1DM8/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Bos taurus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 1999-12-13 Released: 2000-12-13 
• Deposition Author(s): Raman, C.S., Li, H., Martasek, P., Southan, G.J., Masters, B.S.S., Poulos, T.L.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.25 Å
• R-Value Free: 0.239 
• R-Value Work: 0.199 
• R-Value Observed: 0.199 

Literature

Crystal Structures of Bovine Endothelial Nitric Oxide Synthase Heme Domain Complexed With Various Inhibitors

Raman, C.S., Li, H., Martasek, P., Southan, G.J., Masters, B.S.S., Poulos, T.L.

To be published.

Biological Assembly 1  

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

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

Macromolecule Content

• Total Structure Weight: 102.12 kDa 
• Atom Count: 7,024 
• Modelled Residue Count: 830 
• Deposited Residue Count: 888 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
NITRIC OXIDE SYNTHASE	A, B	444	Bos taurus	Mutation(s): 0  Gene Names: NOS3 EC: 1.14.13.39
UniProt
Find proteins for P29473 (Bos taurus) Explore P29473  Go to UniProtKB:  P29473

Small Molecules

Ligands 7 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
HEM	G [auth A], N [auth B]	PROTOPORPHYRIN IX CONTAINING FE C34 H32 Fe N4 O4 KABFMIBPWCXCRK-RGGAHWMASA-L
H4B	H [auth A], O [auth B]	5,6,7,8-TETRAHYDROBIOPTERIN C9 H15 N5 O3 FNKQXYHWGSIFBK-RPDRRWSUSA-N
CAC	E [auth A], M [auth B]	CACODYLATE ION C2 H6 As O2 OGGXGZAMXPVRFZ-UHFFFAOYSA-M
TZC	I [auth A], P [auth B]	1,2,4-TRIAZOLE-CARBOXAMIDINE C3 H6 N5 CDIOIIJXUJXYPB-UHFFFAOYSA-O
GOL	J [auth A], Q [auth B]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
ZN	F [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
ACT	C [auth A], D [auth A], K [auth B], L [auth B]	ACETATE ION C2 H3 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.25 Å
• R-Value Free: 0.239 
• R-Value Work: 0.199 
• R-Value Observed: 0.199 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 58.53	α = 90
b = 106.6	β = 90
c = 157.08	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2000-12-13 
Deposition Author(s): Raman, C.S., Li, H., Martasek, P., Southan, G.J., Masters, B.S.S., Poulos, T.L.

Revision History  

• Version 1.0: 2000-12-13
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Non-polymer description, Version format compliance