A0A1V5IS90 · A0A1V5IS90_9ACTN
- ProteindITP/XTP pyrophosphatase
- GenerdgB
- StatusUniProtKB unreviewed (TrEMBL)
- Amino acids256 (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
- ITP + H2O = IMP + diphosphate + H+
Cofactor
Note: Binds 1 Mg2+ ion per subunit.
Features
Showing features for binding site, active site.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Binding site | 44-49 | substrate | ||||
Sequence: SGNRHK | ||||||
Active site | 118 | Proton acceptor | ||||
Sequence: D | ||||||
Binding site | 118 | Mg2+ (UniProtKB | ChEBI) | ||||
Sequence: D | ||||||
Binding site | 119 | substrate | ||||
Sequence: S | ||||||
Binding site | 204-207 | substrate | ||||
Sequence: FGYD | ||||||
Binding site | 227 | substrate | ||||
Sequence: K | ||||||
Binding site | 232-233 | substrate | ||||
Sequence: HR |
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | cytosol | |
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
- Strain
- Taxonomic lineageBacteria > Actinomycetota
Accessions
- Primary accessionA0A1V5IS90
Proteomes
Subcellular Location
UniProt Annotation
GO Annotation
Interaction
Subunit
Homodimer.
Structure
Sequence
- Sequence statusComplete
- Length256
- Mass (Da)26,658
- Last updated2017-06-07 v1
- ChecksumC234648A24DA72A1