› 6cic

X-ray diffraction
1.75Å resolution

Structure of the human nitric oxide synthase R354A/G357D mutant heme domain in complex with N-(1-(2-(Ethyl(methyl)amino)ethyl)-1,2,3,4-tetrahydroquino-lin-6-yl)thiophene-2-carboximidamide

Released:
DOI: 10.2210/pdb6cic/pdb
PDB entry 6cic coloured by chain, front view.
PDB entry 6cic coloured by chain, side view.
PDB entry 6cic coloured by chain, top view.
Source organism: Homo sapiens
Primary publication:
Structural Basis for Isoform Selective Nitric Oxide Synthase Inhibition by Thiophene-2-carboximidamides.
Li H, Evenson RJ, Chreifi G, Silverman RB, Poulos TL
Biochemistry 57 6319-6325 (2018)
PMID: 30335983

Function and Biology Details

Reaction catalysed: 
(1a) 2 L-arginine + 2 NADPH + 2 O(2) = 2 N(omega)-hydroxy-L-arginine + 2 NADP(+) + 2 H(2)O
Biochemical function:
Biological process:
Cellular component:
  • not assigned
Sequence domains:

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-151514 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Nitric oxide synthase 1 Chains: A, B
Molecule details ›
Chains: A, B
Length: 421 amino acids
Theoretical weight: 48.78 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P29475 (Residues: 302-722; Coverage: 29%)
Gene name: NOS1
Sequence domains: Nitric oxide synthase, oxygenase domain
Structure domains:

Ligands and Environments


Cofactor: Ligand HEM 2 x HEM
4 bound ligands:
Ligand H4B 2 x H4B
Ligand 7R2 2 x 7R2
Ligand GOL 2 x GOL
Ligand ZN 1 x ZN
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SSRL BEAMLINE BL12-2
Spacegroup: P212121
Unit cell:
a: 52.318Å b: 122.157Å c: 165.131Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.174 0.172 0.204
Expression system: Escherichia coli BL21(DE3)

Quick links

Citations

1 review citation

Use of Computational Biochemistry for Elucidating Molecular Mechanisms of Nitric Oxide Synthase.
Bignon et al. (2019)
1 other article

6 mentions without citation

Cerebroprotective effect of Aloe Emodin: In silico and in vivo studies.
Pasala et al. (2022)
5 more