Record Information
Version 1.0
Update Date 1/22/2018 11:54:54 AM
Metabolite IDPAMDB001974
Identification
Name: Ubiquinol-9
Description:Ubiquinol-9 is a member of the chemical class known as Polyprenylbenzoquinols. They are reduced forms of polyprenylbenzoquinines (ubiquinones). These are compounds containing a polyisoprene chain attached to a quinol at the second ring position. Ubiquiol-9 has just 9 isoprene units. Normally in Pseudomonas aeruginosa the active form of Ubiquinol has 8 isoprene units (Ubiquinol-8) and in humans it normally has 10. Ubiquinol-9 is an extended version of Ubiquinol 8 that arises from conjugation by an extended prenyl tail via 4-hydroxybenzoate polyprenyltransferase. Coenzyme Q(n) exists in three redox states, fully oxidized (ubiquinone), partially reduced (semiquinones or ubisemiquinones), and fully reduced (ubiquinols). The redox functions of ubiquinol in cellular energy production and antioxidant protection are based on the ability to exchange two electrons in a redox cycle between ubiquinol (reduced) and the ubiquinone (oxidized) form. Ubiquionols are important in cellular respiration. They are fat-soluble and therefore mobile in cellular membranes; they play a unique role in the electron transport chain (ETC). In the inner bacterial membrane, electrons from NADH and succinate pass through the ETC to the oxygen, which is then reduced to water. The transfer of electrons through ETC results in the pumping of H+ across the membrane creating a proton gradient across the membrane, which is used by ATP synthase (located on the membrane) to generate ATP.
Structure
Thumb
Synonyms:
  • CoQ9
  • Ubiquinol(9)
Chemical Formula: C54H84O4
Average Molecular Weight: 797.2424
Monoisotopic Molecular Weight: 796.636961176
InChI Key: NPCOQXAVBJJZBQ-WJNLUYJISA-N
InChI:InChI=1S/C54H84O4/c1-40(2)22-14-23-41(3)24-15-25-42(4)26-16-27-43(5)28-17-29-44(6)30-18-31-45(7)32-19-33-46(8)34-20-35-47(9)36-21-37-48(10)38-39-50-49(11)51(55)53(57-12)54(58-13)52(50)56/h22,24,26,28,30,32,34,36,38,55-56H,14-21,23,25,27,29,31,33,35,37,39H2,1-13H3/b41-24+,42-26+,43-28+,44-30+,45-32+,46-34+,47-36+,48-38+
CAS number: Not Available
IUPAC Name:2,3-dimethoxy-5-methyl-6-[(2E,6E,10E,14E,18E,22E,26E,30E)-3,7,11,15,19,23,27,31,35-nonamethylhexatriaconta-2,6,10,14,18,22,26,30,34-nonaen-1-yl]benzene-1,4-diol
Traditional IUPAC Name: 2,3-dimethoxy-5-methyl-6-[(2E,6E,10E,14E,18E,22E,26E,30E)-3,7,11,15,19,23,27,31,35-nonamethylhexatriaconta-2,6,10,14,18,22,26,30,34-nonaen-1-yl]benzene-1,4-diol
SMILES:[H]\C(CC\C(C)=C(/[H])CC\C(C)=C(/[H])CC\C(C)=C(/[H])CC\C(C)=C(/[H])CC\C(C)=C(/[H])CC\C(C)=C(/[H])CC\C(C)=C(/[H])CC1=C(C)C(O)=C(OC)C(OC)=C1O)=C(\C)CCC=C(C)C
Chemical Taxonomy
Taxonomy DescriptionThis compound belongs to the class of organic compounds known as polyprenyl quinols. These are compounds containing a polyisoprene chain attached to a quinol(hydroquinone) at the second ring position.
Kingdom Organic compounds
Super ClassLipids and lipid-like molecules
Class Prenol lipids
Sub ClassQuinone and hydroquinone lipids
Direct Parent Polyprenyl quinols
Alternative Parents
Substituents
  • Polyterpenoid
  • 2-polyprenyl-6-methoxyphenol
  • Polyprenylbenzoquinol
  • Polyprenylphenol
  • Ubiquinol skeleton
  • O-dimethoxybenzene
  • Dimethoxybenzene
  • Methoxyphenol
  • Hydroxyquinol derivative
  • Methoxybenzene
  • Phenol ether
  • O-cresol
  • M-cresol
  • Hydroquinone
  • Anisole
  • Toluene
  • Phenol
  • Alkyl aryl ether
  • Benzenoid
  • Monocyclic benzene moiety
  • Ether
  • Hydrocarbon derivative
  • Organooxygen compound
  • Aromatic homomonocyclic compound
Molecular Framework Aromatic homomonocyclic compounds
External Descriptors Not Available
Physical Properties
State: Not Available
Charge:0
Melting point: Not Available
Experimental Properties:
PropertyValueSource
Predicted Properties
PropertyValueSource
Water Solubility0.000245 mg/mLALOGPS
logP9.56ALOGPS
logP16.57ChemAxon
logS-6.5ALOGPS
pKa (Strongest Acidic)10.27ChemAxon
pKa (Strongest Basic)-4.7ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count4ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area58.92 Å2ChemAxon
Rotatable Bond Count28ChemAxon
Refractivity262.65 m3·mol-1ChemAxon
Polarizability103.09 Å3ChemAxon
Number of Rings1ChemAxon
Bioavailability0ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Biological Properties
Cellular Locations: Membrane
Reactions:
Pathways: Not Available
Spectra
Spectra:
Spectrum TypeDescriptionSplash Key
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0002-0212130900-7b4740cb04f0378cc6f1View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0002-0659384100-afd07c2a0f6c1fc471c8View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-00kb-1354593400-75b223f0b44ea0331e3eView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0002-0000000900-d7e562c74fb2183982acView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-00dj-0000000900-90d594856c756f900ef3View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-00b9-8100005900-3e1b30f2fef64149860aView in MoNA
References
References:
  • Winder, C. L., Dunn, W. B., Schuler, S., Broadhurst, D., Jarvis, R., Stephens, G. M., Goodacre, R. (2008). "Global metabolic profiling of Escherichia coli cultures: an evaluation of methods for quenching and extraction of intracellular metabolites." Anal Chem 80:2939-2948. Pubmed: 18331064
Synthesis Reference: Not Available
Material Safety Data Sheet (MSDS) Not Available
External Links:
ResourceLink
CHEBI ID84424
HMDB IDNot Available
Pubchem Compound ID45281170
Kegg IDNot Available
ChemSpider ID24603697
Wikipedia IDNot Available
BioCyc IDNot Available