4xwy

X-ray diffraction
2.35Å resolution

Function and Biology Details

Reaction catalysed:
L-erythro-7,8-dihydrobiopterin + NADP(+) = sepiapterin + NADPH
Biochemical function:
Cellular component:

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-152880 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Sepiapterin reductase Chains: A, B, C, D
Molecule details ›
Chains: A, B, C, D
Length: 275 amino acids
Theoretical weight: 29.89 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P35270 (Residues: 1-261; Coverage: 100%)
Gene name: SPR
Sequence domains: short chain dehydrogenase
Structure domains: NAD(P)-binding Rossmann-like Domain

Ligands and Environments


Cofactor: Ligand NDP 4 x NDP
2 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SLS BEAMLINE X06SA
Spacegroup: P61
Unit cell:
a: 144.84Å b: 144.84Å c: 180.695Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.187 0.185 0.217
Expression system: Escherichia coli BL21(DE3)