PDBe 2o74

X-ray diffraction
1.8Å resolution

Structure of OHCU decarboxylase in complex with guanine


Function and Biology Details

Reaction catalysed:
5-hydroxy-2-oxo-4-ureido-2,5-dihydro-1H-imidazole-5-carboxylate = (S)- allantoin + CO(2). 
Biochemical function:
Biological process:
Cellular component:

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Entry contents:
1 distinct polypeptide molecule
2-oxo-4-hydroxy-4-carboxy-5-ureidoimidazoline decarboxylase Chains: A, B, C, D, E, F
Molecule details ›
Chains: A, B, C, D, E, F
Length: 174 amino acids
Theoretical weight: 19.77 KDa
Source organism: Danio rerio
Expression system: Escherichia coli BL21
  • Canonical: A1L259 (Residues: 1-174; Coverage: 100%)
Gene names: prhoxnb, urad, zgc:158663
Sequence domains: OHCU decarboxylase
Structure domains: UraD-like domains

Ligands and Environments

1 bound ligand:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID23-1
Spacegroup: P32
Unit cell:
a: 102.223Å b: 102.223Å c: 103.892Å
α: 90° β: 90° γ: 120°
R R work R free
0.223 0.221 0.257
Expression system: Escherichia coli BL21