A0A0K9PX41 · A0A0K9PX41_ZOSMR
- ProteinInosine triphosphate pyrophosphatase
- StatusUniProtKB unreviewed (TrEMBL)
- Organism
- Amino acids194 (go to sequence)
- Protein existenceInferred from homology
- Annotation score4/5
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
- H2O + ITP = diphosphate + H+ + IMP
Cofactor
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.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Binding site | 13-18 | ITP (UniProtKB | ChEBI) | ||||
Sequence: TGNAKK | ||||||
Binding site | 41 | Mg2+ (UniProtKB | ChEBI) | ||||
Sequence: E | ||||||
Binding site | 53 | ITP (UniProtKB | ChEBI) | ||||
Sequence: K | ||||||
Binding site | 69 | Mg2+ (UniProtKB | ChEBI) | ||||
Sequence: D | ||||||
Binding site | 69-70 | ITP (UniProtKB | ChEBI) | ||||
Sequence: DT | ||||||
Binding site | 145-148 | ITP (UniProtKB | ChEBI) | ||||
Sequence: FGWD | ||||||
Binding site | 168 | ITP (UniProtKB | ChEBI) | ||||
Sequence: K | ||||||
Binding site | 173-174 | ITP (UniProtKB | ChEBI) | ||||
Sequence: HR |
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | cytoplasm | |
Molecular Function | dITP diphosphatase activity | |
Molecular Function | ITP diphosphatase activity | |
Molecular Function | metal ion binding | |
Molecular Function | nucleoside triphosphate diphosphatase activity | |
Molecular Function | nucleotide binding | |
Molecular Function | XTP diphosphatase activity | |
Biological Process | deoxyribonucleoside triphosphate catabolic process | |
Biological Process | nucleoside triphosphate catabolic process | |
Biological Process | nucleotide metabolic process |
Keywords
- Molecular function
- Biological process
- Ligand
Enzyme and pathway databases
Names & Taxonomy
Protein names
- Recommended nameInosine triphosphate pyrophosphatase
- EC number
- Short namesITPase ; Inosine triphosphatase
- Alternative names
Gene names
Organism names
- Organism
- Strain
- Taxonomic lineageEukaryota > Viridiplantae > Streptophyta > Embryophyta > Tracheophyta > Spermatophyta > Magnoliopsida > Liliopsida > Zosteraceae > Zostera
Accessions
- Primary accessionA0A0K9PX41
Proteomes
Subcellular Location
Interaction
Structure
Sequence
- Sequence statusComplete
- Length194
- Mass (Da)21,487
- Last updated2015-11-11 v1
- Checksum2A5086AF7319940A
Keywords
- Technical term