X-ray diffraction
1.5Å resolution

Crystal structure of radical H88Q Synechocystis sp. PCYA


Function and Biology Details

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

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Phycocyanobilin:ferredoxin oxidoreductase Chain: A
Molecule details ›
Chain: A
Length: 248 amino acids
Theoretical weight: 28.15 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

2 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SSRL BEAMLINE BL7-1
Spacegroup: P21212
Unit cell:
a: 70.84Å b: 95.229Å c: 42.585Å
α: 90° β: 90° γ: 90°
R R work R free
0.26 0.171 0.196
Expression system: Escherichia coli