Q54LQ6 · ITPA_DICDI

Function

function

Pyrophosphatase that hydrolyzes non-canonical purine nucleotides such as inosine triphosphate (ITP), deoxyinosine triphosphate (dITP) or 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.

Catalytic activity

Cofactor

Mg2+ (UniProtKB | Rhea| CHEBI:18420 )

Mn2+ (UniProtKB | Rhea| CHEBI:29035 )

Note: Binds 1 divalent metal cation per subunit; can use either Mg2+ or Mn2+.

Features

Showing features for binding site.

TypeIDPosition(s)Description
Binding site11-16ITP (UniProtKB | ChEBI)
Binding site39Mg2+ (UniProtKB | ChEBI)
Binding site51ITP (UniProtKB | ChEBI)
Binding site67-68ITP (UniProtKB | ChEBI)
Binding site84ITP (UniProtKB | ChEBI)
Binding site143-146ITP (UniProtKB | ChEBI)
Binding site166ITP (UniProtKB | ChEBI)
Binding site171-172ITP (UniProtKB | ChEBI)

GO annotations

AspectTerm
Cellular Componentcytoplasm
Molecular FunctiondITP diphosphatase activity
Molecular FunctionITP diphosphatase activity
Molecular Functionmetal ion binding
Molecular Functionnucleoside triphosphate diphosphatase activity
Molecular Functionnucleotide binding
Molecular FunctionXTP diphosphatase activity
Biological Processdeoxyribonucleoside triphosphate catabolic process
Biological Processnucleoside triphosphate catabolic process
Biological Processnucleotide metabolic process

Keywords

Enzyme and pathway databases

Names & Taxonomy

Protein names

  • Recommended name
    Inosine triphosphate pyrophosphatase
  • EC number
  • Short names
    ITPase
    ; Inosine triphosphatase
  • Alternative names
    • Non-canonical purine NTP pyrophosphatase
    • Non-standard purine NTP pyrophosphatase
    • Nucleoside-triphosphate diphosphatase
    • Nucleoside-triphosphate pyrophosphatase
      (NTPase
      )

Gene names

    • Name
      itpa
    • ORF names
      DDB_G0286495

Organism names

Accessions

  • Primary accession
    Q54LQ6

Proteomes

Organism-specific databases

Subcellular Location

Keywords

PTM/Processing

Features

Showing features for chain.

TypeIDPosition(s)Description
ChainPRO_00003283991-194Inosine triphosphate pyrophosphatase

Proteomic databases

Interaction

Subunit

Homodimer.

Protein-protein interaction databases

Structure

Family & Domains

Sequence similarities

Belongs to the HAM1 NTPase family.

Phylogenomic databases

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    194
  • Mass (Da)
    21,730
  • Last updated
    2005-05-24 v1
  • Checksum
    B8A4AB1217C26D0E
MSISKKIVFVTGNAKKLEEALQILGTSFPIESKKVDLPELQGDPIDISIEKCKIAAREVGGPVLVEDTCLCFNALKGLPGPYVKWFLDKLEPEGLYKLLDAWEDKSAYALCNFAFSEGPDSEPIVFAGKTDGIIVQPRGPRNFGWDPVFQPDGYKETYAEMDKSIKNTISHRTRSLQKVKEFLKSKGYENCKFE

Keywords

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
AAFI02000086
EMBL· GenBank· DDBJ
EAL64198.1
EMBL· GenBank· DDBJ
Genomic DNA

Genome annotation databases

Similar Proteins

Disclaimer

Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. Our staff consists of biologists and biochemists that are not trained to give medical advice.
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