X-ray diffraction
1.48Å resolution

Crystal structure of PcyA-181,182-dihydrobiliverdin complex

Source organism: Synechocystis sp. PCC 6803
Entry authors: Hagiwara Y, Sugishima M, Fukuyama K

Function and Biology Details

Reaction catalysed:
(3Z)-phycocyanobilin + 4 oxidized ferredoxin = biliverdin IX-alpha + 4 reduced ferredoxin
Biochemical function:
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Phycocyanobilin:ferredoxin oxidoreductase Chain: X
Molecule details ›
Chain: X
Length: 248 amino acids
Theoretical weight: 28.16 KDa
Source organism: Synechocystis sp. PCC 6803
Expression system: Escherichia coli
  • Canonical: Q55891 (Residues: 1-248; Coverage: 100%)
Gene names: pcyA, slr0116
Sequence domains: Ferredoxin-dependent bilin reductase
Structure domains: oxygen-dependent coproporphyrinogen oxidase

Ligands and Environments

1 bound ligand:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SPRING-8 BEAMLINE BL41XU
Spacegroup: P21212
Unit cell:
a: 70.822Å b: 95.087Å c: 42.782Å
α: 90° β: 90° γ: 90°
R R work R free
0.166 0.164 0.197
Expression system: Escherichia coli