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Record Information
Version4.0
StatusExpected but not Quantified
Creation Date2005-11-16 15:48:42 UTC
Update Date2017-12-20 20:29:42 UTC
HMDB IDHMDB0000189
Secondary Accession Numbers
  • HMDB00189
Metabolite Identification
Common NameInosine triphosphate
DescriptionInosine triphosphate (ITP) is an intermediate in the purine metabolism pathway. Relatively high levels of ITP in red cells are found in individuals as result of deficiency of inosine triphosphatase (EC 3.1.3.56, ITPase) ITPase is a cytosolic nucleoside triphosphate pyrophosphohydrolase specific for ITP catalysis to inosine monophosphate (IMP) and deoxy-inosine triphosphate (dITP) to deoxy-inosine monophosphate. ITPase deficiency is not associated with any defined pathology other than the characteristic and abnormal accumulation of ITP in red blood cells. Nevertheless, ITPase deficiency may have pharmacogenomic implications, and the abnormal metabolism of 6-mercaptopurine in ITPase-deficient patients may lead to thiopurine drug toxicity. ITPase's function is not clearly understood but possible roles for ITPase could be to prevent the accumulation of rogue nucleotides which would be otherwise incorporated into DNA and RNA, or compete with nucleotides such as GTP in signalling processes. (PMID: 170291 , 1204209 , 17113761 , 17924837 ).
Structure
Thumb
Synonyms
ValueSource
2'-Inosine-5'-triphosphateChEBI
Inosine 5'-triphosphateChEBI
Inosine tripolyphosphateChEBI
O(5')-(Tetrahydroxytriphosphoryl)inosineChEBI
2'-Inosine-5'-triphosphoric acidGenerator
Inosine triphosphoric acidGenerator
Inosine 5'-triphosphoric acidGenerator
Inosine tripolyphosphoric acidGenerator
5'-ITPHMDB
5-ITPHMDB
Inosine 5HMDB
Inosine 5'-(tetrahydrogen triphosphate)HMDB
Inosine 5(tetrahydrogen triphosphate)HMDB
Inosine 5-triphopshateHMDB
ITPHMDB
ITTHMDB
Triphosphate, inosineMeSH
Chemical FormulaC10H15N4O14P3
Average Molecular Weight508.1658
Monoisotopic Molecular Weight507.979760744
IUPAC Name({[({[(2R,3S,4R,5R)-3,4-dihydroxy-5-(6-hydroxy-9H-purin-9-yl)oxolan-2-yl]methoxy}(hydroxy)phosphoryl)oxy](hydroxy)phosphoryl}oxy)phosphonic acid
Traditional Name({[(2R,3S,4R,5R)-3,4-dihydroxy-5-(6-hydroxypurin-9-yl)oxolan-2-yl]methoxy(hydroxy)phosphoryl}oxy(hydroxy)phosphoryl)oxyphosphonic acid
CAS Registry Number132-06-9
SMILES
O[C@@H]1[C@@H](COP(O)(=O)OP(O)(=O)OP(O)(O)=O)O[C@H]([C@@H]1O)N1C=NC2=C1N=CN=C2O
InChI Identifier
InChI=1S/C10H15N4O14P3/c15-6-4(1-25-30(21,22)28-31(23,24)27-29(18,19)20)26-10(7(6)16)14-3-13-5-8(14)11-2-12-9(5)17/h2-4,6-7,10,15-16H,1H2,(H,21,22)(H,23,24)(H,11,12,17)(H2,18,19,20)/t4-,6-,7-,10-/m1/s1
InChI KeyHAEJPQIATWHALX-KQYNXXCUSA-N
Chemical Taxonomy
DescriptionThis compound belongs to the class of organic compounds known as purine ribonucleoside triphosphates. These are purine ribobucleotides with a triphosphate group linked to the ribose moiety.
KingdomOrganic compounds
Super ClassNucleosides, nucleotides, and analogues
ClassPurine nucleotides
Sub ClassPurine ribonucleotides
Direct ParentPurine ribonucleoside triphosphates
Alternative Parents
Substituents
  • Purine ribonucleoside triphosphate
  • Purine ribonucleoside monophosphate
  • Pentose phosphate
  • Pentose-5-phosphate
  • Glycosyl compound
  • N-glycosyl compound
  • 6-oxopurine
  • Hypoxanthine
  • Monosaccharide phosphate
  • Imidazopyrimidine
  • Purine
  • Pyrimidone
  • Monoalkyl phosphate
  • Alkyl phosphate
  • Pyrimidine
  • Phosphoric acid ester
  • Monosaccharide
  • Organic phosphoric acid derivative
  • N-substituted imidazole
  • Tetrahydrofuran
  • Vinylogous amide
  • Azole
  • Imidazole
  • Heteroaromatic compound
  • Secondary alcohol
  • 1,2-diol
  • Organoheterocyclic compound
  • Azacycle
  • Oxacycle
  • Alcohol
  • Organic oxide
  • Organopnictogen compound
  • Organic oxygen compound
  • Organic nitrogen compound
  • Organooxygen compound
  • Hydrocarbon derivative
  • Organonitrogen compound
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
Ontology
Disposition

Source:

Biological location:

Process

Naturally occurring process:

Physical Properties
StateSolid
Experimental Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water Solubility903.5 mg/mLNot Available
LogPNot AvailableNot Available
Predicted Properties
PropertyValueSource
Water Solubility4.78 g/LALOGPS
logP-0.67ALOGPS
logP-4.4ChemAxon
logS-2ALOGPS
pKa (Strongest Acidic)0.93ChemAxon
pKa (Strongest Basic)-0.17ChemAxon
Physiological Charge-3ChemAxon
Hydrogen Acceptor Count14ChemAxon
Hydrogen Donor Count7ChemAxon
Polar Surface Area273.34 ŲChemAxon
Rotatable Bond Count8ChemAxon
Refractivity93.09 m³·mol⁻¹ChemAxon
Polarizability38.01 ųChemAxon
Number of Rings3ChemAxon
Bioavailability0ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectra
Spectra
Spectrum TypeDescriptionSplash Key
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-06tb-7945400000-911379f798a6795d41e2View in MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (2 TMS) - 70eV, Positivesplash10-00fr-3110912000-6e11d70bc57c2ac2cefeView in MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 10V, Positive (Annotated)splash10-0a4r-0510090000-c39217a77098a2ef6d34View in MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 25V, Positive (Annotated)splash10-000i-3900000000-24a790aa14cc5baf5627View in MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 40V, Positive (Annotated)splash10-000i-3900000000-29bad6cebedb5d34080aView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-000i-0911410000-146df23821068dac1422View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-000i-0900000000-089ed929e640785bf5e6View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-000i-0900000000-8da20c40f471761cfb80View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0a4r-0930380000-11dcd43e3adf07afdbedView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-000i-3930000000-2ea125b3b69cf05d6b28View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-004i-9300000000-cf4801eb928997ac07cfView in MoNA
1D NMR1H NMR SpectrumNot AvailableView in JSpectraViewer
1D NMR1H NMR SpectrumNot AvailableView in JSpectraViewer
1D NMR13C NMR SpectrumNot AvailableView in JSpectraViewer
2D NMR[1H,1H] 2D NMR SpectrumNot AvailableView in JSpectraViewer
2D NMR[1H,13C] 2D NMR SpectrumNot AvailableView in JSpectraViewer
Biological Properties
Cellular Locations
  • Cytoplasm
  • Mitochondria
  • Nucleus
Biospecimen LocationsNot Available
Tissue Location
  • Erythrocyte
Pathways
Normal Concentrations
Not Available
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FoodDB IDFDB021902
KNApSAcK IDNot Available
Chemspider ID8265
KEGG Compound IDC00081
BioCyc IDITP
BiGG ID33780
Wikipedia LinkNot Available
METLIN ID5204
PubChem Compound8583
PDB IDITT
ChEBI ID16039
References
Synthesis ReferenceNakayama, Kiyoshi; Tanaka, Haruo. Fermentative preparation of inosine di- and triphosphate. Jpn. Tokkyo Koho (1972), 2 pp.
Material Safety Data Sheet (MSDS)Download (PDF)
General References
  1. Lin S, McLennan AG, Ying K, Wang Z, Gu S, Jin H, Wu C, Liu W, Yuan Y, Tang R, Xie Y, Mao Y: Cloning, expression, and characterization of a human inosine triphosphate pyrophosphatase encoded by the itpa gene. J Biol Chem. 2001 Jun 1;276(22):18695-701. Epub 2001 Mar 13. [PubMed:11278832 ]
  2. Sumi S, Marinaki AM, Arenas M, Fairbanks L, Shobowale-Bakre M, Rees DC, Thein SL, Ansari A, Sanderson J, De Abreu RA, Simmonds HA, Duley JA: Genetic basis of inosine triphosphate pyrophosphohydrolase deficiency. Hum Genet. 2002 Oct;111(4-5):360-7. Epub 2002 Aug 15. [PubMed:12384777 ]
  3. Zachara B, Kopff M: Activity of inosine triphosphate pyrophosphohydrolase in fresh and stored human erythrocytes. Haematologia (Budap). 1981;14(3):277-83. [PubMed:6120123 ]
  4. Vormittag W, Brannath W: As to the clastogenic-, sister-chromatid exchange inducing-and cytotoxic activity of inosine triphosphate in cultures of human peripheral lymphocytes. Mutat Res. 2001 May 9;476(1-2):71-81. [PubMed:11336985 ]
  5. Dutta TK, Goel A, Ghotekar LH, Hamide A, Badhe BA, Basu D: Dapsone in treatment of chronic idiopathic thrombocytopenic purpura in adults. J Assoc Physicians India. 2001 Apr;49:421-5. [PubMed:11762611 ]
  6. Soder C, Henderson JF, Zombor G, McCoy EE, Verhoef V, Morris AJ: Relationships between nucleoside triphosphate pyrophosphohydrolase activity and inosine triphosphate accumulation in human erythrocytes. Can J Biochem. 1976 Oct;54(10):843-7. [PubMed:990987 ]
  7. Henderson JF, Zombor G, Fraser JH, McCoy EE, Verhoef V, Morris AJ: Factors affecting inosinate synthesis and inosine triphosphate accumulation in human erythrocytes. Can J Biochem. 1977 Apr;55(4):359-64. [PubMed:15708 ]
  8. Klinker JF, Seifert R: Functionally nonequivalent interactions of guanosine 5'-triphosphate, inosine 5'-triphosphate, and xanthosine 5'-triphosphate with the retinal G-protein, transducin, and with Gi-proteins in HL-60 leukemia cell membranes. Biochem Pharmacol. 1997 Sep 1;54(5):551-62. [PubMed:9337071 ]
  9. Zachara B, Lewandowski J: Isolation and identification of inosine triphosphate from human erythrocytes. Biochim Biophys Acta. 1974 Jun 27;353(2):253-9. [PubMed:4842021 ]
  10. Mikami T, Yoshino Y, Ito A: Does a relationship exist between the urate pool in the body and lipid peroxidation during exercise? Free Radic Res. 2000 Jan;32(1):31-9. [PubMed:10625215 ]
  11. Kopff M, Zachara B, Klem J, Zakrzewska I: [Accumulation of inosine triphosphate in human erythrocytes as a function of ITP-pyrophosphohydrolase activity]. Acta Haematol Pol. 1983 Jul-Dec;14(3-4):165-71. [PubMed:6147059 ]
  12. Fraser JH, Meyers H, Henderson JF, Brox LW, McCoy EE: Individual variation in inosine triphosphate accumulation in human erythrocytes. Clin Biochem. 1975 Dec;8(6):353-64. [PubMed:1204209 ]

Only showing the first 10 proteins. There are 28 proteins in total.

Enzymes

General function:
Involved in hydrolase activity
Specific function:
In the nervous system, could hydrolyze ATP and other nucleotides to regulate purinergic neurotransmission. Could also be implicated in the prevention of platelet aggregation by hydrolyzing platelet-activating ADP to AMP. Hydrolyzes ATP and ADP equally well.
Gene Name:
ENTPD1
Uniprot ID:
P49961
Molecular weight:
58706.0
Reactions
Inosine triphosphate + Water → IDP + Phosphoric aciddetails
General function:
Involved in calcium ion binding
Specific function:
Calcium-dependent nucleotidase with a preference for UDP. The order of activity with different substrates is UDP > GDP > UTP > GTP. Has very low activity towards ADP and even lower activity towards ATP. Does not hydrolyze AMP and GMP. Involved in proteoglycan synthesis.
Gene Name:
CANT1
Uniprot ID:
Q8WVQ1
Molecular weight:
44839.24
General function:
Involved in hydrolase activity
Specific function:
Has a threefold preference for the hydrolysis of ATP over ADP.
Gene Name:
ENTPD3
Uniprot ID:
O75355
Molecular weight:
59104.76
Reactions
Inosine triphosphate + Water → IDP + Phosphoric aciddetails
General function:
Involved in ATP binding
Specific function:
Phosphorylates uridine and cytidine to uridine monophosphate and cytidine monophosphate. Does not phosphorylate deoxyribonucleosides or purine ribonucleosides. Can use ATP or GTP as a phosphate donor. Can also phosphorylate cytidine and uridine nucleoside analogs such as 6-azauridine, 5-fluorouridine, 4-thiouridine, 5-bromouridine, N(4)-acetylcytidine, N(4)-benzoylcytidine, 5-fluorocytidine, 2-thiocytidine, 5-methylcytidine, and N(4)-anisoylcytidine.
Gene Name:
UCK1
Uniprot ID:
Q9HA47
Molecular weight:
22760.43
Reactions
Inosine triphosphate + Cytidine → IDP + Cytidine monophosphatedetails
Inosine triphosphate + Uridine → IDP + Uridine 5'-monophosphatedetails
General function:
Involved in nucleoside diphosphate kinase activity
Specific function:
Major role in the synthesis of nucleoside triphosphates other than ATP (By similarity).
Gene Name:
NME4
Uniprot ID:
O00746
Molecular weight:
20658.45
Reactions
Adenosine triphosphate + IDP → ADP + Inosine triphosphatedetails
General function:
Involved in nucleoside diphosphate kinase activity
Specific function:
Major role in the synthesis of nucleoside triphosphates other than ATP. Possesses nucleoside-diphosphate kinase, serine/threonine-specific protein kinase, geranyl and farnesyl pyrophosphate kinase, histidine protein kinase and 3'-5' exonuclease activities. Involved in cell proliferation, differentiation and development, signal transduction, G protein-coupled receptor endocytosis, and gene expression. Required for neural development including neural patterning and cell fate determination.
Gene Name:
NME1
Uniprot ID:
P15531
Molecular weight:
17148.635
Reactions
Adenosine triphosphate + IDP → ADP + Inosine triphosphatedetails
General function:
Involved in nucleoside diphosphate kinase activity
Specific function:
Major role in the synthesis of nucleoside triphosphates other than ATP. The ATP gamma phosphate is transferred to the NDP beta phosphate via a ping-pong mechanism, using a phosphorylated active-site intermediate.
Gene Name:
NME7
Uniprot ID:
Q9Y5B8
Molecular weight:
42491.365
Reactions
Adenosine triphosphate + IDP → ADP + Inosine triphosphatedetails
General function:
Involved in nucleoside diphosphate kinase activity
Specific function:
Major role in the synthesis of nucleoside triphosphates other than ATP. Negatively regulates Rho activity by interacting with AKAP13/LBC. Acts as a transcriptional activator of the MYC gene; binds DNA non-specifically (PubMed:8392752). Exhibits histidine protein kinase activity.
Gene Name:
NME2
Uniprot ID:
P22392
Molecular weight:
30136.92
Reactions
Adenosine triphosphate + IDP → ADP + Inosine triphosphatedetails
General function:
Involved in nucleoside diphosphate kinase activity
Specific function:
Major role in the synthesis of nucleoside triphosphates other than ATP. The ATP gamma phosphate is transferred to the NDP beta phosphate via a ping-pong mechanism, using a phosphorylated active-site intermediate. Probably has a role in normal hematopoiesis by inhibition of granulocyte differentiation and induction of apoptosis.
Gene Name:
NME3
Uniprot ID:
Q13232
Molecular weight:
19014.85
Reactions
Adenosine triphosphate + IDP → ADP + Inosine triphosphatedetails
General function:
Involved in nucleoside diphosphate kinase activity
Specific function:
Major role in the synthesis of nucleoside triphosphates other than ATP. The ATP gamma phosphate is transferred to the NDP beta phosphate via a ping-pong mechanism, using a phosphorylated active-site intermediate. Inhibitor of p53-induced apoptosis.
Gene Name:
NME6
Uniprot ID:
O75414
Molecular weight:
22002.965
Reactions
Adenosine triphosphate + IDP → ADP + Inosine triphosphatedetails

Only showing the first 10 proteins. There are 28 proteins in total.