A0A014L1U8 · A0A014L1U8_9ACTN
- ProteindITP/XTP pyrophosphatase
- StatusUniProtKB unreviewed (TrEMBL)
- Organism
- Amino acids211 (go to sequence)
- Protein existenceInferred from homology
- Annotation score4/5
Function
function
Pyrophosphatase that catalyzes the hydrolysis of nucleoside triphosphates to their monophosphate derivatives, with a high preference for the non-canonical purine nucleotides XTP (xanthosine triphosphate), dITP (deoxyinosine triphosphate) and ITP. Seems to function as a house-cleaning enzyme that removes non-canonical purine nucleotides from the nucleotide pool, thus preventing their incorporation into DNA/RNA and avoiding chromosomal lesions.
Catalytic activity
- H2O + ITP = diphosphate + H+ + IMP
Cofactor
Note: Binds 1 Mg2+ ion per subunit.
Features
Showing features for binding site, active site.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Binding site | 19-24 | substrate | ||||
Sequence: TRNAYK | ||||||
Active site | 83 | Proton acceptor | ||||
Sequence: D | ||||||
Binding site | 83 | Mg2+ (UniProtKB | ChEBI) | ||||
Sequence: D | ||||||
Binding site | 84 | substrate | ||||
Sequence: S | ||||||
Binding site | 166-169 | substrate | ||||
Sequence: FGYD | ||||||
Binding site | 189 | substrate | ||||
Sequence: K | ||||||
Binding site | 194-195 | substrate | ||||
Sequence: HR |
GO annotations
Aspect | Term | |
---|---|---|
Molecular Function | dITP diphosphatase activity | |
Molecular Function | ITP diphosphatase activity | |
Molecular Function | metal ion binding | |
Molecular Function | nucleotide binding | |
Molecular Function | ribonucleoside triphosphate phosphatase activity | |
Molecular Function | XTP diphosphatase activity | |
Biological Process | nucleotide metabolic process | |
Biological Process | purine nucleoside triphosphate catabolic process |
Keywords
- Molecular function
- Biological process
- Ligand
Enzyme and pathway databases
Names & Taxonomy
Protein names
- Recommended namedITP/XTP pyrophosphatase
- EC number
- Alternative names
Gene names
Organism names
- Organism
- Strain
- Taxonomic lineageBacteria > Actinomycetota > Actinomycetes > Kitasatosporales > Streptomycetaceae > Streptomyces
Accessions
- Primary accessionA0A014L1U8
Proteomes
Interaction
Subunit
Homodimer.
Structure
Sequence
- Sequence statusComplete
- Length211
- Mass (Da)22,433
- Last updated2014-06-11 v1
- Checksum5A94FA8E81ED0DD3
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
JABQ01000079 EMBL· GenBank· DDBJ | EXU63231.1 EMBL· GenBank· DDBJ | Genomic DNA |