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Record Information
Version5.0
StatusDetected and Quantified
Creation Date2007-04-12 20:56:15 UTC
Update Date2023-02-21 17:17:13 UTC
HMDB IDHMDB0006037
Secondary Accession Numbers
  • HMDB06037
Metabolite Identification
Common Name8-Hydroxy-7-methylguanine
Description8-Hydroxy-7-methylguanine is a modified nucleoside. 8-Hydroxy-7-methylguanine is an endogenous methylated nucleoside found in human fluids; methylated purine bases are present in higher amounts in tumor-bearing patients compared to healthy controls. Human exposure to carcinogenic alkylating agents can lead to the formation of covalently bound adducts in DNA, some of which are excreted in urine as alkylated purines following DNA degradation and repair; the N2 position of guanine is one of the major sites for DNA modification by various carcinogens. Measurements of RNA or DNA catabolites in urine can be used as a measure for the metabolism of each of the three major species of RNA. An accumulation of modified ribonucleosides appears in the serum of uremic patients. (PMID: 3506820 , 5961889 , 16527824 , 16061253 , 8043914 , 2428556 , 7159514 , 9607216 ).
Structure
Data?1676999833
SynonymsNot Available
Chemical FormulaC6H7N5O2
Average Molecular Weight181.1521
Monoisotopic Molecular Weight181.059974493
IUPAC Name2-amino-7-methyl-6,7,8,9-tetrahydro-3H-purine-6,8-dione
Traditional Name2-amino-7-methyl-3,9-dihydropurine-6,8-dione
CAS Registry Number1688-85-3
SMILES
CN1C(=O)NC2=C1C(=O)N=C(N)N2
InChI Identifier
InChI=1S/C6H7N5O2/c1-11-2-3(9-6(11)13)8-5(7)10-4(2)12/h1H3,(H4,7,8,9,10,12,13)
InChI KeyVHPXSVXJBWZORQ-UHFFFAOYSA-N
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
  • Aminopyrimidine
  • Pyrimidone
  • N-substituted imidazole
  • Pyrimidine
  • Vinylogous amide
  • Imidazole
  • Azole
  • Heteroaromatic compound
  • Urea
  • Azacycle
  • Organic oxide
  • Amine
  • Primary amine
  • Organooxygen compound
  • Organonitrogen compound
  • Organic nitrogen compound
  • Organopnictogen compound
  • Organic oxygen compound
  • Hydrocarbon derivative
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
Ontology
Physiological effectNot Available
Disposition
ProcessNot Available
RoleNot Available
Physical Properties
StateSolid
Experimental Molecular Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
Predicted Chromatographic Properties
Spectra
Biological Properties
Cellular LocationsNot Available
Biospecimen Locations
  • Blood
  • Urine
Tissue LocationsNot Available
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodExpected but not QuantifiedNot QuantifiedNot AvailableNot Available
Normal
      Not Available
details
UrineDetected and Quantified0.6 (0.4-0.72) umol/mmol creatinineAdult (>18 years old)BothNormal
    • Geigy Scientific ...
details
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB023813
KNApSAcK IDNot Available
Chemspider ID272336
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound308075
PDB IDNot Available
ChEBI ID74064
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Niwa T, Takeda N, Yoshizumi H: RNA metabolism in uremic patients: accumulation of modified ribonucleosides in uremic serum. Technical note. Kidney Int. 1998 Jun;53(6):1801-6. [PubMed:9607216 ]
  2. Choi JY, Guengerich FP: Adduct size limits efficient and error-free bypass across bulky N2-guanine DNA lesions by human DNA polymerase eta. J Mol Biol. 2005 Sep 9;352(1):72-90. [PubMed:16061253 ]
  3. Morris GS, Simmonds HA, Davies PM: Use of biological fluids for the rapid diagnosis of potentially lethal inherited disorders of human purine and pyrimidine metabolism. Biomed Chromatogr. 1986 Jun;1(3):109-18. [PubMed:3506820 ]
  4. Kanduc D, Sapia G: Origin of 1,7-dimethylguanosine in tRNA chemical and enzymatic methylation. Boll Soc Ital Biol Sper. 1982 Oct 15;58(19):1221-5. [PubMed:7159514 ]
  5. Litwack MD, Weissmann B: Source of urinary 8-hydroxy-7-methylguanine in man. Biochemistry. 1966 Sep;5(9):3007-12. [PubMed:5961889 ]
  6. Choi JY, Guengerich FP: Kinetic evidence for inefficient and error-prone bypass across bulky N2-guanine DNA adducts by human DNA polymerase iota. J Biol Chem. 2006 May 5;281(18):12315-24. Epub 2006 Mar 8. [PubMed:16527824 ]
  7. Porcelli B, Pagani R, Lorenzini L, De Martino A, Catinella S, Traldi P: Different mass spectrometric approaches in the identification of endogenous methylated purine bases in urine extracts. Rapid Commun Mass Spectrom. 1994 Jun;8(6):443-50. [PubMed:8043914 ]
  8. Sander G, Topp H, Heller-Schoch G, Wieland J, Schoch G: Ribonucleic acid turnover in man:RNA catabolites in urine as measure for the metabolism of each of the three major species of RNA. Clin Sci (Lond). 1986 Oct;71(4):367-74. [PubMed:2428556 ]