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Identification
YMDB IDYMDB00915
NameUbiquinol-6
SpeciesSaccharomyces cerevisiae
StrainBaker's yeast
DescriptionUbiquinol is a lipid-soluble benzoquinol that is found in all cellular systems. Ubiquinol is the fully reduced form of ubiquinone. 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.
Structure
Thumb
Synonyms
  • Dihydroubiquinone
  • Reduced ubiquinone
  • Ubiquinol
  • ubiquinol(30)
CAS number5677-58-7
WeightAverage: 592.8913
Monoisotopic: 592.449160408
InChI KeyDYOSCPIQEYRQEO-LPHQIWJTSA-N
InChIInChI=1S/C39H60O4/c1-28(2)16-11-17-29(3)18-12-19-30(4)20-13-21-31(5)22-14-23-32(6)24-15-25-33(7)26-27-35-34(8)36(40)38(42-9)39(43-10)37(35)41/h16,18,20,22,24,26,40-41H,11-15,17,19,21,23,25,27H2,1-10H3/b29-18+,30-20+,31-22+,32-24+,33-26+
IUPAC Name2-[(2E,6E,10E,14E,18E)-3,7,11,15,19,23-hexamethyltetracosa-2,6,10,14,18,22-hexaen-1-yl]-5,6-dimethoxy-3-methylbenzene-1,4-diol
Traditional IUPAC Nameubiquinol-6
Chemical FormulaC39H60O4
SMILES[H]OC1=C(OC([H])([H])[H])C(OC([H])([H])[H])=C(O[H])C(=C1C([H])([H])[H])C([H])([H])C([H])=C(C([H])([H])[H])C([H])([H])C([H])([H])C([H])=C(C([H])([H])[H])C([H])([H])C([H])([H])C([H])=C(C([H])([H])[H])C([H])([H])C([H])([H])C([H])=C(C([H])([H])[H])C([H])([H])C([H])([H])C([H])=C(C([H])([H])[H])C([H])([H])C([H])([H])C([H])=C(C([H])([H])[H])C([H])([H])[H]
Chemical Taxonomy
DescriptionThis compound belongs to the class of organic compounds known as 2-polyprenyl-6-methoxyphenols. These are compounds containing a polyisoprene chain attached at the 2-position of a 6-methoxyphenol group.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassPrenol lipids
Sub ClassPolyprenylphenols
Direct Parent2-polyprenyl-6-methoxyphenols
Alternative Parents
Substituents
  • 2-polyprenyl-6-methoxyphenol
  • Polyprenylbenzoquinol
  • Sesterterpenoid
  • Prenylbenzoquinol
  • Ubiquinol skeleton
  • Methoxyphenol
  • O-dimethoxybenzene
  • Dimethoxybenzene
  • Anisole
  • Hydroquinone
  • M-cresol
  • Phenoxy compound
  • O-cresol
  • Phenol ether
  • Methoxybenzene
  • Alkyl aryl ether
  • Phenol
  • Toluene
  • Monocyclic benzene moiety
  • Benzenoid
  • Ether
  • Organooxygen compound
  • Organic oxygen compound
  • Hydrocarbon derivative
  • Aromatic homomonocyclic compound
Molecular FrameworkAromatic homomonocyclic compounds
External Descriptors
Physical Properties
StateSolid
Charge0
Melting pointNot Available
Experimental Properties
PropertyValueReference
Water SolubilityNot AvailablePhysProp
LogPNot AvailablePhysProp
Predicted Properties
PropertyValueSource
Water Solubility0.00035 g/LALOGPS
logP8.49ALOGPS
logP11.59ChemAxon
logS-6.2ALOGPS
pKa (Strongest Acidic)10.27ChemAxon
pKa (Strongest Basic)-4.7ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count4ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area58.92 ŲChemAxon
Rotatable Bond Count19ChemAxon
Refractivity191.24 m³·mol⁻¹ChemAxon
Polarizability75.45 ųChemAxon
Number of Rings1ChemAxon
Bioavailability0ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Biological Properties
Cellular Locations
  • mitochondrion
Organoleptic PropertiesNot Available
SMPDB PathwaysNot Available
KEGG PathwaysNot Available
SMPDB ReactionsNot Available
KEGG Reactions
Spermidine + Ubiquinone-6 + water1,3-Diaminopropane + Ubiquinol-6 + 4-aminobutanal
Ubiquinone-6 + L-Dihydroorotic acidUbiquinol-6 + Orotic acid
Ubiquinol-6 + hydron + ferricytochrome c → ferrocytochrome c + Ubiquinone-6 + hydron
Ubiquinone-6 + Formic acid + hydronUbiquinol-6 + Carbon dioxide
hydron + 2-hexaprenyl-5-hydroxy-6-methoxy-3-methyl-1,4-benzoquinone + S-AdenosylmethionineUbiquinol-6 + S-Adenosylhomocysteine
Concentrations
Intracellular ConcentrationsNot Available
Extracellular ConcentrationsNot Available
Spectra
Spectra
References
References:
  • 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
  • Schultz, J. R., Ellerby, L. M., Gralla, E. B., Valentine, J. S., Clarke, C. F. (1996). "Autoxidation of ubiquinol-6 is independent of superoxide dismutase." Biochemistry 35:6595-6603.8639607
  • Luttik, M. A., Overkamp, K. M., Kotter, P., de Vries, S., van Dijken, J. P., Pronk, J. T. (1998). "The Saccharomyces cerevisiae NDE1 and NDE2 genes encode separate mitochondrial NADH dehydrogenases catalyzing the oxidation of cytosolic NADH." J Biol Chem 273:24529-24534.9733747
Synthesis Reference:Not Available
External Links:
ResourceLink
CHEBI ID52970
HMDB IDHMDB12299
Pubchem Compound ID3393375
Kegg IDNot Available
ChemSpider ID22378442
FOODB IDFDB028922
WikipediaUbiquinol
BioCyc IDNot Available

Enzymes

General function:
Involved in peptidyl-lysine modification to hypusine
Specific function:
Catalyzes the NAD-dependent oxidative cleavage of spermidine and the subsequent transfer of the butylamine moiety of spermidine to the epsilon-amino group of a specific lysine residue of the eIF-5A precursor protein to form the intermediate deoxyhypusine residue
Gene Name:
DYS1
Uniprot ID:
P38791
Molecular weight:
42891.80078
Reactions
[eIF5A-precursor]-lysine + spermidine → [eIF5A-precursor]-deoxyhypusine + propane-1,3-diamine.
General function:
Involved in oxidoreductase activity
Specific function:
External NADH dehydrogenase required for optimum cellular growth with a number of nonfermentable carbon sources, including ethanol. With NDE1, performes the mitochondrial oxidation of cytosolic NADH under these growth conditions. Regulates the mitochondrial glycerol-3-phosphate dehydrogenase, GUT2, also involved in cytosolic NADH oxydation
Gene Name:
NDE2
Uniprot ID:
Q07500
Molecular weight:
61658.69922
Reactions
NADH + ubiquinone → NAD(+) + ubiquinol.
General function:
Involved in oxidoreductase activity
Specific function:
External NADH dehydrogenase required for optimum cellular growth with a number of nonfermentable carbon sources, including ethanol. With NDE2, performes the mitochondrial oxidation of cytosolic NADH under these growth conditions. Regulates the mitochondrial glycerol-3-phosphate dehydrogenase, GUT2, also involved in cytosolic NADH oxydation
Gene Name:
NDE1
Uniprot ID:
P40215
Molecular weight:
62773.60156
Reactions
NADH + ubiquinone → NAD(+) + ubiquinol.
General function:
Involved in oxidoreductase activity
Specific function:
Catalyzes the oxidation of NADH generated inside the Mitochondrion
Gene Name:
NDI1
Uniprot ID:
P32340
Molecular weight:
57249.30078
Reactions
NADH + ubiquinone → NAD(+) + ubiquinol.
General function:
Involved in 2 iron, 2 sulfur cluster binding
Specific function:
Subunit of succinate dehydrogenase (SDH) that is involved in complex II of the mitochondrial electron transport chain and is responsible for transferring electrons from succinate to ubiquinone (coenzyme Q). SDH1 and SDH2 form the catalytic dimer. Electrons flow from succinate to the FAD bound to SDH1, and sequentially through the iron-sulfur clusters bound to SDH2 and enter the membrane dimer formed by SDH3 and SDH4
Gene Name:
SDH2
Uniprot ID:
P21801
Molecular weight:
30230.90039
Reactions
Succinate + ubiquinone → fumarate + ubiquinol.
General function:
Involved in ubiquinone biosynthetic process
Specific function:
Component of the coenzyme Q biosynthetic pathway. May play a role in organizing a multi-subunit COQ enzyme complex required for coenzyme Q biosynthesis. Required for steady-state levels of COQ3, COQ4, COQ6, COQ7 and COQ9 polypeptides
Gene Name:
COQ4
Uniprot ID:
O13525
Molecular weight:
38626.80078
General function:
Involved in catalytic activity
Specific function:
In the de novo pyrimidine biosynthesic pathway, catalyzes the stereospecific oxidation of (S)-dihydroorotate to orotate and the reduction of fumarate to succinate. Does not use oxaloacetate and NAD or NADP as electron acceptors
Gene Name:
URA1
Uniprot ID:
P28272
Molecular weight:
34800.60156
Reactions
(S)-dihydroorotate + O(2) → orotate + H(2)O(2).
(S)-dihydroorotate + a quinone → orotate + a quinol
General function:
Involved in iron ion binding
Specific function:
Electron carrier protein. The oxidized form of the cytochrome c heme group can accept an electron from the heme group of the cytochrome c1 subunit of cytochrome reductase. Cytochrome c then transfers this electron to the cytochrome oxidase complex, the final protein carrier in the mitochondrial electron-transport chain
Gene Name:
CYC1
Uniprot ID:
P00044
Molecular weight:
12181.90039
Reactions
General function:
Involved in iron ion binding
Specific function:
Electron carrier protein. The oxidized form of the cytochrome c heme group can accept an electron from the heme group of the cytochrome c1 subunit of cytochrome reductase. Cytochrome c then transfers this electron to the cytochrome oxidase complex, the final protein carrier in the mitochondrial electron-transport chain
Gene Name:
CYC7
Uniprot ID:
P00045
Molecular weight:
12532.2998
Reactions