Species Human Entrez 3704 | Human Mouse Ensembl ENSG00000125877 | |
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Aliases ITPA, C20orf37, HLC14-06-P, dJ794I6.3, My049, ITPase, NTPase, inosine triphosphatase External IDs MGI: 96622 HomoloGene: 6289 GeneCards: ITPA | ||
Inosine triphosphate pyrophosphatase is an enzyme that in humans is encoded by the ITPA gene, by the rdgB gene in bacteria E.coli and the HAM1 gene in yeast S. cerevisiae. Two transcript variants encoding two different isoforms have been found for this gene. Also, at least two other transcript variants have been identified which are probably regulatory rather than protein-coding.
Contents
Function
The protein encoded by this gene hydrolyzes inosine triphosphate and deoxyinosine triphosphate to the monophosphate nucleotide and diphosphate. The enzyme possesses a multiple substrate-specificity and acts on other nucleotides including xanthosine triphosphate and deoxyxanthosine triphosphate. The encoded protein, which is a member of the HAM1 NTPase protein family, is found in the cytoplasm and acts as a homodimer.
Clinical significance
Defects in the encoded protein can result in inosine triphosphate pyrophosphorylase deficiency.