Xanthine dehydrogenase

Xanthine dehydrogenase

PDB rendering based on 1fiq.
Identifiers
Symbols XDH; XO; XOR
External IDs OMIM607633 MGI98973 HomoloGene324 GeneCards: XDH Gene
EC number 1.17.1.4
RNA expression pattern
More reference expression data
Orthologs
Species Human Mouse
Entrez 7498 22436
Ensembl ENSG00000158125 ENSMUSG00000024066
UniProt P47989 Q3TAT6
RefSeq (mRNA) NM_000379 NM_011723.2
RefSeq (protein) NP_000370 NP_035853.2
Location (UCSC) Chr 2:
31.56 – 31.64 Mb
Chr 17:
74.23 – 74.3 Mb
PubMed search [1] [2]
xanthine dehydrogenase
Identifiers
EC number 1.17.1.4
CAS number 9054-84-6
Databases
IntEnz IntEnz view
BRENDA BRENDA entry
ExPASy NiceZyme view
KEGG KEGG entry
MetaCyc metabolic pathway
PRIAM profile
PDB structures RCSB PDB PDBe PDBsum
Gene Ontology AmiGO / EGO

Xanthine dehydrogenase, also known as XDH, is a protein that, in humans, is encoded by the XDH gene.[1][2]

Contents

Function

Xanthine dehydrogenase belongs to the group of molybdenum-containing hydroxylases involved in the oxidative metabolism of purines. The enzyme is a homodimer. Xanthine dehydrogenase can be converted to xanthine oxidase by reversible sulfhydryl oxidation or by irreversible proteolytic modification.[1]

Xanthine dehydrogenase catalyzes the following chemical reaction:

The three substrates of this enzyme are xanthine, NAD+, and H2O, whereas its three products are urate, NADH, and H+.

This enzyme belongs to the family of oxidoreductases, to be specific, those acting on CH or CH2 group with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is xanthine:NAD+ oxidoreductase. Other names in common use include NAD+-xanthine dehydrogenase, xanthine-NAD+ oxidoreductase, xanthine/NAD+ oxidoreductase, and xanthine oxidoreductase. This enzyme participates in purine metabolism.

Clinical significance

Defects in xanthine dehydrogenase cause xanthinuria, may contribute to adult respiratory stress syndrome, and may potentiate influenza infection through an oxygen metabolite-dependent mechanism.[1]

See also

References

  1. ^ a b c "Entrez Gene: XDH xanthine dehydrogenase". http://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=7498. 
  2. ^ Ichida K, Amaya Y, Noda K, Minoshima S, Hosoya T, Sakai O, Shimizu N, Nishino T (November 1993). "Cloning of the cDNA encoding human xanthine dehydrogenase (oxidase): structural analysis of the protein and chromosomal location of the gene". Gene 133 (2): 279–84. doi:10.1016/0378-1119(93)90652-J. PMID 8224915. 

Further reading