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Identification
YMDB IDYMDB00555
NameHypoxanthine
SpeciesSaccharomyces cerevisiae
StrainBaker's yeast
DescriptionHypoxanthine, also known as purine-6-ol or Hyp, belongs to the class of organic compounds known as hypoxanthines. Hypoxanthines are compounds containing the purine derivative 1H-purin-6(9H)-one. Purine is a bicyclic aromatic compound made up of a pyrimidine ring fused to an imidazole ring. Hypoxanthine is a moderately basic compound (based on its pKa). Hypoxanthine exists in all living species, ranging from bacteria to humans. Hypoxanthine is a potentially toxic compound.
Structure
Thumb
Synonyms
  • 1,7-Dihydro-6H-purin-6-one
  • 1,7-Dihydro-6H-purine-6-one
  • 1H,7H-Hypoxanthine
  • 3H-Purin-6-ol
  • 4-Hydroxy-1H-purine
  • 6-Hydroxy-1H-purine
  • 6-Hydroxypurine
  • 6-Oxopurine
  • 6(1H)-Purinone
  • 7H-Purin-6-ol
  • 9H-Purin-6-ol
  • 9H-Purin-6(1H)-one
  • Hypoxanthine enol
  • Purin-6-ol
  • Purin-6(1H)-one
  • Purin-6(3H)-one
  • Purine-6-ol
  • Sarcine
  • Sarkin
  • Sarkine
  • Hyp
CAS number68-94-0
WeightAverage: 136.1115
Monoisotopic: 136.03851077
InChI KeyFDGQSTZJBFJUBT-UHFFFAOYSA-N
InChIInChI=1S/C5H4N4O/c10-5-3-4(7-1-6-3)8-2-9-5/h1-2H,(H2,6,7,8,9,10)
IUPAC Name7H-purin-6-ol
Traditional IUPAC Name6-hydroxypurine
Chemical FormulaC5H4N4O
SMILESO=C1NC=NC2=C1NC=N2
Chemical Taxonomy
Description belongs to the class of organic compounds known as hypoxanthines. Hypoxanthines are compounds containing the purine derivative 1H-purin-6(9H)-one. Purine is a bicyclic aromatic compound made up of a pyrimidine ring fused to an imidazole ring.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassImidazopyrimidines
Sub ClassPurines and purine derivatives
Direct ParentHypoxanthines
Alternative Parents
Substituents
  • 6-oxopurine
  • Hypoxanthine
  • Pyrimidone
  • Pyrimidine
  • Azole
  • Imidazole
  • Vinylogous amide
  • Heteroaromatic compound
  • Azacycle
  • Organic oxide
  • Organopnictogen compound
  • Organooxygen compound
  • Organonitrogen compound
  • Organic nitrogen compound
  • Organic oxygen compound
  • Hydrocarbon derivative
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
Physical Properties
StateSolid
Charge0
Melting point150 °C
Experimental Properties
PropertyValueReference
Water Solubility0.7 mg/mL at 23 oC [YALKOWSKY,SH & DANNENFELSER,RM (1992)]PhysProp
LogP-1.11 [HANSCH,C ET AL. (1995)]PhysProp
Predicted Properties
PropertyValueSource
Water Solubility13 g/LALOGPS
logP-0.55ALOGPS
logP-0.048ChemAxon
logS-1ALOGPS
pKa (Strongest Acidic)8.72ChemAxon
pKa (Strongest Basic)1.73ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count4ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area74.69 ŲChemAxon
Rotatable Bond Count0ChemAxon
Refractivity35.5 m³·mol⁻¹ChemAxon
Polarizability11.82 ųChemAxon
Number of Rings2ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Biological Properties
Cellular Locations
  • extracellular
  • cytoplasm
Organoleptic PropertiesNot Available
SMPDB PathwaysNot Available
KEGG Pathways
Purine metabolismec00230 Map00230
SMPDB ReactionsNot Available
KEGG Reactions
water + hydron + AdenineHypoxanthine + Ammonium
Hypoxanthine + Phosphoribosyl pyrophosphatePyrophosphate + Inosinic acid
2'-Deoxyinosine + phosphateHypoxanthine + 2-deoxy-D-ribofuranose 1-phosphate
phosphate + InosineHypoxanthine + Ribose 1-phosphate
Concentrations
Intracellular ConcentrationsNot Available
Extracellular ConcentrationsNot Available
Spectra
Spectra
Spectrum TypeDescriptionSplash KeyView
GC-MSGC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (2 TMS)splash10-0159-3970000000-0d844fae4a1ffe158823JSpectraViewer | MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (Non-derivatized)splash10-014i-1790000000-ae93bf8bf07b30b65e1aJSpectraViewer | MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (2 TMS)splash10-00di-9340000000-1184c503fb61344c4853JSpectraViewer | MoNA
GC-MSGC-MS Spectrum - GC-MS (2 TMS)splash10-014i-3590000000-a419976950afe7934cbcJSpectraViewer | MoNA
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-000i-9800000000-9c266d6963658e9d2cf1JSpectraViewer | MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-0159-3970000000-0d844fae4a1ffe158823JSpectraViewer | MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-014i-1790000000-ae93bf8bf07b30b65e1aJSpectraViewer | MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-00di-9340000000-1184c503fb61344c4853JSpectraViewer | MoNA
GC-MSGC-MS Spectrum - GC-MS (Non-derivatized)splash10-014i-3590000000-a419976950afe7934cbcJSpectraViewer | MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-014i-2890000000-3be4d08be45781881bc1JSpectraViewer | MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-014i-1590000000-bb6f003bfa7bd04628a1JSpectraViewer | MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-0a5i-8900000000-e20eb5d939a2c406a6e2JSpectraViewer
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (1 TMS) - 70eV, Positivesplash10-0613-5900000000-be0624b928ba71cc797dJSpectraViewer
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot AvailableJSpectraViewer
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Negativesplash10-000i-0930030000-56ea204dcb077bc174c2JSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Negativesplash10-0006-9000000000-4c2d1980f9e5e4b720a5JSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Negativesplash10-000i-0900000000-26b3c93bc9dea5a88032JSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 10V, Negativesplash10-000i-1900000000-c367cd4c23aea0f74ecbJSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 20V, Negativesplash10-000l-8900000000-91e35cdcc11d357119f0JSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 30V, Negativesplash10-0006-9100000000-4fb8f4ee2d35aa874617JSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 40V, Negativesplash10-014l-9000000000-7934b3037f39d69fc40aJSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 50V, Negativesplash10-014i-9000000000-ad93e267446292bf247bJSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-000i-1900000000-c367cd4c23aea0f74ecbJSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-000l-8900000000-f8c3fcf312f201115f52JSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-0006-9100000000-1088187ef16c41e5fd58JSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-014l-9000000000-7934b3037f39d69fc40aJSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-014i-9000000000-ad93e267446292bf247bJSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT , negativesplash10-0006-9000000000-fba535f8767b852493f1JSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT , negativesplash10-000i-0900000000-26b3c93bc9dea5a88032JSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - , negativesplash10-000l-5900000000-835823cc21e116df8128JSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - 40V, Negativesplash10-014i-9000000000-6eabf590960d6c5dd018JSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - 35V, Negativesplash10-00kf-9000000000-a16f6a9310d83b058967JSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - 20V, Negativesplash10-0006-9100000000-0ddabb4a93af99de1aa6JSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - 30V, Negativesplash10-014l-9000000000-54ceed9029123cd72f47JSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - 10V, Negativesplash10-000i-0900000000-b85ebc5bb10dca9de18eJSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - 40V, Negativesplash10-0gi0-0900000000-97b1e5c9521910e9085aJSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - 20V, Negativesplash10-00kr-0900000000-b3eb906d6973911451f6JSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - 35V, Negativesplash10-000l-5900000000-6acc72db72a1b37b957cJSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - 10V, Negativesplash10-000l-8900000000-9c590766cbef043e3effJSpectraViewer | MoNA
MSMass Spectrum (Electron Ionization)splash10-000i-8900000000-ebf57ea530a2d4e31ffaJSpectraViewer | MoNA
1D NMR1H NMR SpectrumNot AvailableJSpectraViewer
1D NMR1H NMR SpectrumNot AvailableJSpectraViewer
1D NMR13C NMR SpectrumNot AvailableJSpectraViewer
1D NMR1H NMR SpectrumNot AvailableJSpectraViewer
1D NMR13C NMR SpectrumNot AvailableJSpectraViewer
1D NMR13C NMR SpectrumNot AvailableJSpectraViewer
1D NMR1H NMR SpectrumNot AvailableJSpectraViewer
1D NMR13C NMR SpectrumNot AvailableJSpectraViewer
1D NMR1H NMR SpectrumNot AvailableJSpectraViewer
1D NMR13C NMR SpectrumNot AvailableJSpectraViewer
1D NMR1H NMR SpectrumNot AvailableJSpectraViewer
1D NMR13C NMR SpectrumNot AvailableJSpectraViewer
1D NMR1H NMR SpectrumNot AvailableJSpectraViewer
1D NMR13C NMR SpectrumNot AvailableJSpectraViewer
1D NMR1H NMR SpectrumNot AvailableJSpectraViewer
1D NMR13C NMR SpectrumNot AvailableJSpectraViewer
1D NMR1H NMR SpectrumNot AvailableJSpectraViewer
1D NMR13C NMR SpectrumNot AvailableJSpectraViewer
1D NMR1H NMR SpectrumNot AvailableJSpectraViewer
1D NMR13C NMR SpectrumNot AvailableJSpectraViewer
1D NMR1H NMR SpectrumNot AvailableJSpectraViewer
1D NMR13C NMR SpectrumNot AvailableJSpectraViewer
1D NMR1H NMR SpectrumNot AvailableJSpectraViewer
1D NMR13C NMR SpectrumNot AvailableJSpectraViewer
1D NMR1H NMR SpectrumNot AvailableJSpectraViewer
2D NMR[1H,1H] 2D NMR SpectrumNot AvailableJSpectraViewer
2D NMR[1H,13C] 2D NMR SpectrumNot AvailableJSpectraViewer
References
References:
  • UniProt Consortium (2011). "Ongoing and future developments at the Universal Protein Resource." Nucleic Acids Res 39:D214-D219.21051339
  • Herrgard, M. J., Swainston, N., Dobson, P., Dunn, W. B., Arga, K. Y., Arvas, M., Bluthgen, N., Borger, S., Costenoble, R., Heinemann, M., Hucka, M., Le Novere, N., Li, P., Liebermeister, W., Mo, M. L., Oliveira, A. P., Petranovic, D., Pettifer, S., Simeonidis, E., Smallbone, K., Spasic, I., Weichart, D., Brent, R., Broomhead, D. S., Westerhoff, H. V., Kirdar, B., Penttila, M., Klipp, E., Palsson, B. O., Sauer, U., Oliver, S. G., Mendes, P., Nielsen, J., Kell, D. B. (2008). "A consensus yeast metabolic network reconstruction obtained from a community approach to systems biology." Nat Biotechnol 26:1155-1160.18846089
Synthesis Reference: Shaw, Elliott.New synthesis of the purines adenine, hypoxanthine, xanthine, and isoguanine. Journal of Biological Chemistry (1950), 185 439-47.
External Links:
ResourceLink
CHEBI ID17368
HMDB IDHMDB00157
Pubchem Compound ID790
Kegg IDC00262
ChemSpider ID768
FOODB IDFDB003949
WikipediaHypoxanthine
BioCyc IDHYPOXANTHINE

Enzymes

General function:
Involved in purine-nucleoside phosphorylase activity
Specific function:
Cleavage of guanosine or inosine to respective bases and sugar-1-phosphate molecules
Gene Name:
PNP1
Uniprot ID:
Q05788
Molecular weight:
33754.60156
Reactions
Purine nucleoside + phosphate → purine + alpha-D-ribose 1-phosphate.
General function:
Involved in deaminase activity
Specific function:
Adenosine + H(2)O = inosine + NH(3)
Gene Name:
AAH1
Uniprot ID:
P53909
Molecular weight:
39634.69922
Reactions
Adenosine + H(2)O → inosine + NH(3).
General function:
Involved in nucleoside metabolic process
Specific function:
IMP + diphosphate = hypoxanthine + 5-phospho- alpha-D-ribose 1-diphosphate
Gene Name:
HPT1
Uniprot ID:
Q04178
Molecular weight:
25190.5
Reactions
IMP + diphosphate → hypoxanthine + 5-phospho-alpha-D-ribose 1-diphosphate.
GMP + diphosphate → guanine + 5-phospho-alpha-D-ribose 1-diphosphate.