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Overview

Uniprot IDD3ZW55
Protein NameInosine triphosphate pyrophosphatase
Gene NameItpa
OrganismRattus norvegicus

Kla Sites from experimental identification

Position Flanking peptide
172 AEMPKAEKNTISHRF

Function

Pyrophosphatase that hydrolyzes the non-canonical purine nucleotides inosine triphosphate (ITP), deoxyinosine triphosphate (dITP) as well as 2'-deoxy-N-6-hydroxylaminopurine triphosphate (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

Protein Sequence

10 MAASLVGKKI 20 VFVTGNAKKL 30 EEVIQILGDK 40 FPCTLVAQKI 50 DLPEYQGEPD 60 EISIQKCQEA 70 ARQVQGPVLV 80 EDTCLCFNAL 90 GGLPGPYIKW 100 FLQKLKPEGL 110 YQLLAGFEDK 120 SAYALCTFAL 130 STGDPSQPVL 140 LFRGKTPGQI 150 VMPRGSRDFG 160 WDPCFQPDGY 170 EQTYAEMPKA 180 EKNTISHRFR 190 ALFKLQEYFG VTDGAGDH

Gene Ontology

Classification GO ID Description
Cellular Component GO:0005737 cytoplasm
Cellular Component GO:0005829 cytosol
Cellular Component GO:0005654 nucleoplasm
Molecular Function GO:0035870 dITP diphosphatase activity
Molecular Function GO:0042802 identical protein binding
Molecular Function GO:0036220 ITP diphosphatase activity
Molecular Function GO:0046872 metal ion binding
Molecular Function GO:0047429 nucleoside triphosphate diphosphatase activity
Molecular Function GO:0000166 nucleotide binding
Molecular Function GO:0036222 XTP diphosphatase activity
Biological Process GO:0051276 chromosome organization
Biological Process GO:0009204 deoxyribonucleoside triphosphate catabolic process
Biological Process GO:0006193 ITP catabolic process
Biological Process GO:0009143 nucleoside triphosphate catabolic process

Reference

[1] Chen Y, Sun W, Sun Z, Zhao H, Wu T et al.. Effect of electroacupuncture on hippocampal protein lactylation in a rat model of vascular dementia.. Front Neurol 16:1629474. 2025. PMID: 40963935.