A0A6B3MBH8 · A0A6B3MBH8_9CYAN
- ProteindITP/XTP pyrophosphatase
- GenerdgB
- StatusUniProtKB unreviewed (TrEMBL)
- Organism
- Amino acids191 (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 | 9-14 | substrate | |||
Binding site | 39 | Mg2+ (UniProtKB | ChEBI) | |||
Active site | 68 | Proton acceptor | |||
Binding site | 68 | Mg2+ (UniProtKB | ChEBI) | |||
Binding site | 69 | substrate | |||
Binding site | 147-150 | substrate | |||
Binding site | 170 | substrate | |||
Binding site | 175-176 | substrate | |||
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
- Organism
- Strain
- Taxonomic lineageBacteria > Cyanobacteriota > Cyanophyceae > Oscillatoriophycideae > Oscillatoriales > Oscillatoriaceae > Moorena
Accessions
- Primary accessionA0A6B3MBH8
Proteomes
Subcellular Location
UniProt Annotation
GO Annotation
Interaction
Subunit
Homodimer.
Structure
Sequence
- Sequence statusComplete
- Length191
- Mass (Da)20,701
- Last updated2020-06-17 v1
- Checksum8713B414C69F48D2
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
JAAHHX010000004 EMBL· GenBank· DDBJ | NEQ56617.1 EMBL· GenBank· DDBJ | Genomic DNA |