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Record Information
Version5.0
StatusDetected and Quantified
Creation Date2006-05-22 14:17:42 UTC
Update Date2021-09-14 15:15:56 UTC
HMDB IDHMDB0002215
Secondary Accession Numbers
  • HMDB02215
Metabolite Identification
Common Name4a-Carbinolamine tetrahydrobiopterin
Description4a-Carbinolamine tetrahydrobiopterin, also known as 6,7-dihydrobiopterin or Q-H2BPT, belongs to the class of organic compounds known as biopterins and derivatives. These are coenzymes containing a 2-amino-pteridine-4-one derivative. They are mainly synthesized in several parts of the body, including the pineal gland. 4a-Carbinolamine tetrahydrobiopterin exists in all living organisms, ranging from bacteria to humans. 4a-Carbinolamine tetrahydrobiopterin has been detected, but not quantified in, a few different foods, such as anatidaes (Anatidae), chickens (Gallus gallus), and domestic pigs (Sus scrofa domestica). This could make 4a-carbinolamine tetrahydrobiopterin a potential biomarker for the consumption of these foods. 4a-Carbinolamine tetrahydrobiopterin is a primary metabolite. Primary metabolites are metabolically or physiologically essential metabolites. They are directly involved in an organism’s growth, development or reproduction. Based on a literature review a significant number of articles have been published on 4a-Carbinolamine tetrahydrobiopterin.
Structure
Thumb
Synonyms
Chemical FormulaC9H13N5O3
Average Molecular Weight239.2312
Monoisotopic Molecular Weight239.101839307
IUPAC Name(6R)-2-amino-6-[(1R,2S)-1,2-dihydroxypropyl]-1,4,6,7-tetrahydropteridin-4-one
Traditional Name(6R)-2-amino-6-[(1R,2S)-1,2-dihydroxypropyl]-6,7-dihydro-1H-pteridin-4-one
CAS Registry Number79647-29-3
SMILES
[H][C@@]1(CN=C2NC(N)=NC(=O)C2=N1)[C@@H](O)[C@H](C)O
InChI Identifier
InChI=1S/C9H13N5O3/c1-3(15)6(16)4-2-11-7-5(12-4)8(17)14-9(10)13-7/h3-4,6,15-16H,2H2,1H3,(H3,10,11,13,14,17)/t3-,4+,6-/m0/s1
InChI KeyZHQJVZLJDXWFFX-RPDRRWSUSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as biopterins and derivatives. These are coenzymes containing a 2-amino-pteridine-4-one derivative. They are mainly synthesized in several parts of the body, including the pineal gland.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassPteridines and derivatives
Sub ClassPterins and derivatives
Direct ParentBiopterins and derivatives
Alternative Parents
Substituents
  • Biopterin
  • Aminopyrimidine
  • Pyrimidone
  • Pyrimidine
  • Imidolactam
  • Vinylogous amide
  • Heteroaromatic compound
  • Secondary alcohol
  • 1,2-diol
  • Azacycle
  • Organic oxygen compound
  • Hydrocarbon derivative
  • Alcohol
  • Organic oxide
  • Primary amine
  • Organooxygen compound
  • Organonitrogen compound
  • Organic nitrogen compound
  • Amine
  • Organopnictogen compound
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External DescriptorsNot Available
Ontology
Physiological effectNot Available
Disposition
ProcessNot Available
Role
Physical Properties
StateSolid
Experimental Molecular Properties
PropertyValueReference
Melting Point218 - 221 °CNot 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 Locations
  • Cytoplasm (predicted from logP)
Biospecimen Locations
  • Blood
Tissue Locations
  • Epidermis
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected and Quantified4.18 +/- 0.04 uMAdult (>18 years old)MaleNormal details
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDDB02562
Phenol Explorer Compound IDNot Available
FooDB IDFDB022911
KNApSAcK IDNot Available
Chemspider ID117564
KEGG Compound IDC00268
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN ID6552
PubChem Compound133246
PDB IDNot Available
ChEBI ID43120
Food Biomarker OntologyNot Available
VMH IDDHBPT
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Schallreuter KU, Wood JM, Pittelkow MR, Gutlich M, Lemke KR, Rodl W, Swanson NN, Hitzemann K, Ziegler I: Regulation of melanin biosynthesis in the human epidermis by tetrahydrobiopterin. Science. 1994 Mar 11;263(5152):1444-6. [PubMed:8128228 ]
  2. Kim H, Roh H, Lee HJ, Chung SY, Choi SO, Lee KR, Han SB: Determination of phloroglucinol in human plasma by high-performance liquid chromatography-mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci. 2003 Jul 25;792(2):307-12. [PubMed:12860038 ]
  3. Ismaili L, Refouvelet B, Xicluna A, Robert JF, Guillaume YC: Phloroglucinol: novel synthesis and role of the magnesium cation on its binding with human serum albumin (HSA) using a biochromatographic approach based on Langmuir isotherms. J Pharm Biomed Anal. 2003 Jul 14;32(3):549-53. [PubMed:14565560 ]
  4. Jafri W, Yakoob J, Hussain S, Jafri N, Islam M: Phloroglucinol in irritable bowel syndrome. J Pak Med Assoc. 2006 Jan;56(1):5-8. [PubMed:16454126 ]
  5. Fiset C, LeBel M: Influence of the menstrual cycle on the absorption and elimination of D-xylose. Clin Pharmacol Ther. 1990 Nov;48(5):529-36. [PubMed:2225712 ]
  6. Armarego WL, Randles D, Taguchi H: Peroxidase catalysed aerobic degradation of 5,6,7,8-tetrahydrobiopterin at physiological pH. Eur J Biochem. 1983 Oct 3;135(3):393-403. [PubMed:6617639 ]
  7. Davis MD, Kaufman S: Evidence for the formation of the 4a-carbinolamine during the tyrosine-dependent oxidation of tetrahydrobiopterin by rat liver phenylalanine hydroxylase. J Biol Chem. 1989 May 25;264(15):8585-96. [PubMed:2722790 ]

Enzymes

General function:
Involved in monooxygenase activity
Specific function:
Plays an important role in the physiology of adrenergic neurons.
Gene Name:
TH
Uniprot ID:
P07101
Molecular weight:
55611.26
Reactions
Tetrahydrobiopterin + L-Tyrosine + Oxygen → DOPA + 4a-Carbinolamine tetrahydrobiopterin + Waterdetails
General function:
Involved in amino acid binding
Specific function:
Not Available
Gene Name:
PAH
Uniprot ID:
P00439
Molecular weight:
51861.565
Reactions
Tetrahydrobiopterin + Phenylalanine + Oxygen → 4a-Carbinolamine tetrahydrobiopterin + L-Tyrosine + Waterdetails
General function:
Involved in amino acid binding
Specific function:
Not Available
Gene Name:
TPH1
Uniprot ID:
P17752
Molecular weight:
50984.725
Reactions
Tetrahydrobiopterin + L-Tryptophan + Oxygen → 5-Hydroxy-L-tryptophan + 4a-Carbinolamine tetrahydrobiopterin + Waterdetails
General function:
Involved in amino acid binding
Specific function:
Not Available
Gene Name:
TPH2
Uniprot ID:
Q8IWU9
Molecular weight:
56056.295
Reactions
Tetrahydrobiopterin + L-Tryptophan + Oxygen → 5-Hydroxy-L-tryptophan + 4a-Carbinolamine tetrahydrobiopterin + Waterdetails
General function:
Involved in oxidoreductase activity
Specific function:
The product of this enzyme, tetrahydrobiopterin (BH-4), is an essential cofactor for phenylalanine, tyrosine, and tryptophan hydroxylases.
Gene Name:
QDPR
Uniprot ID:
P09417
Molecular weight:
25789.295
Reactions
4a-Carbinolamine tetrahydrobiopterin + NADH + Hydrogen Ion → Tetrahydrobiopterin + NADdetails
4a-Carbinolamine tetrahydrobiopterin + NADPH + Hydrogen Ion → Tetrahydrobiopterin + NADPdetails
General function:
Involved in 4-alpha-hydroxytetrahydrobiopterin dehydratase activity
Specific function:
Involved in tetrahydrobiopterin biosynthesis. Seems to both prevent the formation of 7-pterins and accelerate the formation of quinonoid-BH2. Coactivator for HNF1A-dependent transcription. Regulates the dimerization of homeodomain protein HNF1A and enhances its transcriptional activity.
Gene Name:
PCBD1
Uniprot ID:
P61457
Molecular weight:
11999.515
Reactions
4a-Hydroxytetrahydrobiopterin → 4a-Carbinolamine tetrahydrobiopterin + Waterdetails
General function:
Involved in 4-alpha-hydroxytetrahydrobiopterin dehydratase activity
Specific function:
Involved in tetrahydrobiopterin biosynthesis. Seems to both prevent the formation of 7-pterins and accelerate the formation of quinonoid-BH2 (By similarity). Regulates the dimerization of homeodomain protein HNF-1-alpha and enhances its transcriptional activity.
Gene Name:
PCBD2
Uniprot ID:
Q9H0N5
Molecular weight:
14365.325
Reactions
4a-Hydroxytetrahydrobiopterin → 4a-Carbinolamine tetrahydrobiopterin + Waterdetails