X-ray diffraction
2.43Å resolution

Human IDO1 in complex with compound 17 (N-{2-[(4-{N-[(7S)-4-fluorobicyclo[4.2.0]octa-1,3,5-trien-7-yl]-N'-hydroxycarbamimidoyl}-1,2,5-oxadiazol-3-yl)sulfanyl]ethyl}acetamide)


Function and Biology Details

Reaction catalysed:
D-tryptophan + O(2) = N-formyl-D-kynurenine
Biochemical function:
Cellular component:

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Indoleamine 2,3-dioxygenase 1 Chains: A, B
Molecule details ›
Chains: A, B
Length: 393 amino acids
Theoretical weight: 44.3 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
  • Canonical: P14902 (Residues: 11-402; Coverage: 97%)
Gene names: IDO, IDO1, INDO
Sequence domains: Indoleamine 2,3-dioxygenase

Ligands and Environments

Cofactor: Ligand HEM 2 x HEM
1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SLS BEAMLINE X06DA
Spacegroup: P212121
Unit cell:
a: 86.427Å b: 96.516Å c: 127.725Å
α: 90° β: 90° γ: 90°
R R work R free
0.202 0.2 0.25
Expression system: Escherichia coli