Identification
HMDB Protein ID CDBP00422
Secondary Accession Numbers Not Available
Name Inosine triphosphate pyrophosphatase
Description Not Available
Synonyms
  1. ITPase
  2. Inosine triphosphatase
  3. Putative oncogene protein hlc14-06-p
  4. Non-canonical purine NTP pyrophosphatase
  5. Non-standard purine NTP pyrophosphatase
  6. Nucleoside-triphosphate diphosphatase
  7. Nucleoside-triphosphate pyrophosphatase
  8. NTPase
Gene Name ITPA
Protein Type Enzyme
Biological Properties
General Function Involved in hydrolase activity
Specific Function Pyrophosphatase that hydrolyzes the non-canonical purine nucleotides inosine triphosphate (ITP), deoxyinosine triphosphate (dITP) as well as 2'-deoxy-N-6-hydroxylaminopurine triposphate (dHAPTP) and 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.
GO Classification
Biological Process
chromosome organization
ITP catabolic process
Cellular Component
cytoplasm
Function
catalytic activity
hydrolase activity
Molecular Function
metal ion binding
dITP diphosphatase activity
nucleotide binding
Cellular Location
  1. Cytoplasm
Pathways
Gene Properties
Chromosome Location 20
Locus 20p
SNPs ITPA
Gene Sequence
>585 bp
ATGGCGGCCTCATTGGTGGGGAAGAAGATCGTGTTTGTAACGGGGAACGCCAAGAAGCTG
GAGGAGGTCGTTCAGATTCTAGGAGATAAGTTTCCATGCACTTTGGTGGCACAGAAAATT
GACCTGCCGGAGTACCAAGGGGAGCCGGATGAGATTTCCATACAGAAATGTCAGGAGGCA
GTTCGCCAGGTACAGGGGCCCGTGCTGGTTGAGGACACTTGTCTGTGCTTCAATGCCCTT
GGAGGGCTCCCCGGCCCCTACATAAAGTGGTTTCTGGAGAAGTTAAAGCCTGAAGGTCTC
CACCAGCTCCTGGCCGGGTTCGAGGACAAGTCAGCCTATGCGCTCTGCACGTTTGCACTC
AGCACCGGGGACCCAAGCCAGCCCGTGCGCCTGTTCAGGGGCCGGACCTCGGGCCGGATC
GTGGCACCCAGAGGCTGCCAGGACTTTGGCTGGGACCCCTGCTTTCAGCCTGATGGATAT
GAGCAGACGTACGCAGAGATGCCTAAGGCGGAGAAGAACGCTGTCTCCCATCGCTTCCGG
GCCCTGCTGGAGCTGCAGGAATACTTTGGCAGTTTGGCAGCTTGA
Protein Properties
Number of Residues 194
Molecular Weight 16833.23
Theoretical pI 7.174
Pfam Domain Function
Signals Not Available
Transmembrane Regions Not Available
Protein Sequence
>Inosine triphosphate pyrophosphatase
MAASLVGKKIVFVTGNAKKLEEVVQILGDKFPCTLVAQKIDLPEYQGEPDEISIQKCQEA
VRQVQGPVLVEDTCLCFNALGGLPGPYIKWFLEKLKPEGLHQLLAGFEDKSAYALCTFAL
STGDPSQPVRLFRGRTSGRIVAPRGCQDFGWDPCFQPDGYEQTYAEMPKAEKNAVSHRFR
ALLELQEYFGSLAA
GenBank ID Protein 21104378
UniProtKB/Swiss-Prot ID Q9BY32
UniProtKB/Swiss-Prot Entry Name ITPA_HUMAN
PDB IDs
GenBank Gene ID AB062127
GeneCard ID ITPA
GenAtlas ID ITPA
HGNC ID HGNC:6176
References
General References Not Available