CATH Classification

Domain Context

CATH Clusters

Superfamily Transthyretin/hydroxyisourate hydrolase domain
Functional Family 5-hydroxyisourate hydrolase

Enzyme Information

3.5.2.17
Hydroxyisourate hydrolase.
based on mapping to UniProt Q06S87
5-hydroxyisourate + H(2)O = 5-hydroxy-2-oxo-4-ureido-2,5-dihydro- 1H-imidazole-5-carboxylate.
-!- The reaction is the first stage in the conversion of 5-hydroxyisourate into (S)-allantoin. -!- This reaction will also occur spontaneously, but more slowly.

UniProtKB Entries (1)

Q06S87
HIUH_DANRE
Danio rerio
5-hydroxyisourate hydrolase

PDB Structure

PDB 2H1X
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
Structure of Zebra fish HIUase: Insights into Evolution of an Enzyme to a Hormone Transporter.
Zanotti, G., Cendron, L., Ramazzina, I., Folli, C., Percudani, R., Berni, R.
J.Mol.Biol.
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