Xanthine dehydrogenase

XDH
Available structures
PDBOrtholog search: PDBe RCSB
Identifiers
Aliases XDH, XO, XOR, xanthine dehydrogenase
External IDs OMIM: 607633 MGI: 98973 HomoloGene: 324 GeneCards: XDH
Genetically Related Diseases
obesity[1]
Targeted by Drug
allopurinol[2]
RNA expression pattern
More reference expression data
Orthologs
Species Human Mouse
Entrez

7498

22436

Ensembl

ENSG00000158125

ENSMUSG00000024066

UniProt

P47989

Q00519

RefSeq (mRNA)

NM_000379

NM_011723

RefSeq (protein)

NP_000370.2

NP_035853.2

Location (UCSC) Chr 2: 31.33 – 31.41 Mb Chr 17: 73.88 – 73.95 Mb
PubMed search [3] [4]
Wikidata
View/Edit HumanView/Edit Mouse
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.[5][6]

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.[5]

Xanthine dehydrogenase catalyzes the following chemical reaction:

xanthine + NAD+ + H2O urate + NADH + H+

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

This enzyme participates in purine metabolism.

Nomenclature

This enzyme belongs to the family of oxidoreductases, to be specific, those acting on CH or CH2 groups 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.

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.[5]

See also

References

  1. "Diseases that are genetically associated with XDH view/edit references on wikidata".
  2. "Drugs that physically interact with Xanthine dehydrogenase/oxidase view/edit references on wikidata".
  3. "Human PubMed Reference:".
  4. "Mouse PubMed Reference:".
  5. 1 2 3 "Entrez Gene: XDH xanthine dehydrogenase". Retrieved October 25, 2012.
  6. Ichida K, Amaya Y, Noda K, Minoshima S, Hosoya T, Sakai O, Shimizu N, Nishino T (Nov 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

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