ITPA gene

inosine triphosphatase

The information on this page was automatically extracted from online scientific databases.

From NCBI Gene:

This gene encodes an inosine triphosphate pyrophosphohydrolase. The encoded protein hydrolyzes inosine triphosphate and deoxyinosine triphosphate to the monophosphate nucleotide and diphosphate. This protein, which is a member of the HAM1 NTPase protein family, is found in the cytoplasm and acts as a homodimer. Defects in the encoded protein can result in inosine triphosphate pyrophosphorylase deficiency which causes an accumulation of ITP in red blood cells. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Jun 2012]

From UniProt:

Pyrophosphatase that hydrolyzes the non-canonical purine nucleotides inosine triphosphate (ITP), deoxyinosine triphosphate (dITP) as well as 2'-deoxy-N-6-hydroxylaminopurine triposphate (dHAPTP) and xanthosine 5'-triphosphate (XTP) to their respective monophosphate derivatives. The enzyme does not distinguish between the deoxy- and ribose forms. Probably excludes non-canonical purines from RNA and DNA precursor pools, thus preventing their incorporation into RNA and DNA and avoiding chromosomal lesions.

From NCBI Gene:

  • Inosine triphosphatase deficiency
  • Epileptic encephalopathy, early infantile, 35

From UniProt:

Epileptic encephalopathy, early infantile, 35 (EIEE35): A form of epileptic encephalopathy, a heterogeneous group of severe childhood onset epilepsies characterized by refractory seizures, neurodevelopmental impairment, and poor prognosis. Development is normal prior to seizure onset, after which cognitive and motor delays become apparent. EIEE35 is characterized by onset of seizures in the first months of life associated with essentially no normal development. Many patients die in early childhood. [MIM:616647]

Inosine triphosphate pyrophosphohydrolase deficiency (ITPAD): A common inherited condition characterized by the abnormal accumulation of inosine triphosphate in erythrocytes. It might have pharmacogenomic implications and be related to increased drug toxicity of purine analog drugs. [MIM:613850]

Cytogenetic Location: 20p13, which is the short (p) arm of chromosome 20 at position 13

Molecular Location: base pairs 3,208,676 to 3,227,449 on chromosome 20 (Homo sapiens Updated Annotation Release 109.20200522, GRCh38.p13) (NCBI)

Cytogenetic Location: 20p13, which is the short (p) arm of chromosome 20 at position 13
  • C20orf37
  • dJ794I6.3
  • HLC14-06-P
  • ITPase
  • My049
  • NTPase