› 4d1n

X-ray diffraction
2.03Å resolution

Structure of human nNOS heme domain with L-Arg bound

Released:
DOI: 10.2210/pdb4d1n/pdb
PDB entry 4d1n coloured by chain, front view.
PDB entry 4d1n coloured by chain, side view.
PDB entry 4d1n coloured by chain, top view.
Source organism: Homo sapiens
Primary publication:
Structures of human constitutive nitric oxide synthases.
Li H, Jamal J, Plaza C, Pineda SH, Chreifi G, Jing Q, Cinelli MA, Silverman RB, Poulos TL
Acta Crystallogr D Biol Crystallogr 70 2667-74 (2014)
PMID: 25286850

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 tetramer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-151515 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Nitric oxide synthase 1 Chains: A, B, C, D
Molecule details ›
Chains: A, B, C, D
Length: 420 amino acids
Theoretical weight: 48.66 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P29475 (Residues: 302-721; Coverage: 29%)
Gene name: NOS1
Sequence domains: Nitric oxide synthase, oxygenase domain
Structure domains:

Ligands and Environments


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

Experiments and Validation Details

Entry percentile scores
X-ray source: SSRL BEAMLINE BL7-1
Spacegroup: C2
Unit cell:
a: 174.923Å b: 84.664Å c: 166.745Å
α: 90° β: 90.94° γ: 90°
R-values:
R R work R free
0.179 0.177 0.209
Expression system: Escherichia coli BL21(DE3)

Quick links

Citations

4 review citations

Sources of Vascular Nitric Oxide and Reactive Oxygen Species and Their Regulation
Tejero et al. (2019)
3 more

5 mentions without citation

Use of Computational Biochemistry for Elucidating Molecular Mechanisms of Nitric Oxide Synthase.
Bignon et al. (2019)
4 more