2g18

X-ray diffraction
2.5Å resolution

Crystal Structure of Nostoc sp. 7120 phycocyanobilin:ferredoxin oxidoreductase (PcyA) Apoprotein

Released:

Function and Biology Details

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

Structure analysis Details

Assembly composition:
monomeric (preferred)
PDBe Complex ID:
PDB-CPX-188131 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Phycocyanobilin:ferredoxin oxidoreductase Chains: A, B, C, D, E, F, G, H, I, J, K, L
Molecule details ›
Chains: A, B, C, D, E, F, G, H, I, J, K, L
Length: 253 amino acids
Theoretical weight: 28.76 KDa
Source organism: Anabaena sp.
Expression system: Escherichia coli
UniProt:
  • Canonical: Q93TN0 (Residues: 2-245; Coverage: 100%)
Gene names: alr3707, pcyA
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: SSRL BEAMLINE BL9-2
Spacegroup: P21
Unit cell:
a: 78.501Å b: 141.332Å c: 121.842Å
α: 90° β: 91.29° γ: 90°
R-values:
R R work R free
0.213 0.211 0.257
Expression system: Escherichia coli