You are using an unsupported browser. Please upgrade your browser to a newer version to get the best experience on Human Metabolome Database.

Showing metabocard for 20a,22b-Dihydroxycholesterol (HMDB0006763)

Jump To Section:
IdentificationTaxonomyOntologyPhysical propertiesSpectraBiological propertiesConcentrationsLinksReferencesenzymes (1) Show 1 proteinXML
enzymes (1) Show 1 protein
Record Information
Version4.0
StatusExpected but not Quantified
Creation Date2008-08-06 15:50:48 UTC
Update Date2020-02-26 21:26:44 UTC
HMDB IDHMDB0006763
Secondary Accession Numbers
  • HMDB06763
Metabolite Identification
Common Name20a,22b-Dihydroxycholesterol
Description20alpha,22beta-Dihydroxycholesterol is an intermediate in C21-Steroid hormone metabolism. 20alpha,22beta-Dihydroxycholesterol is the 8th to last step in the synthesis of 3alpha,11beta,21-Trihydroxy-20-oxo-5beta-pregnan-18-al and is converted from 20alpha-Hydroxycholesterol via the enzyme cytochrome P450 (EC 1.14.15.6). It is then converted to Pregnenolone via the enzyme cytochrome P450 (EC 1.14.15.6).
Structure
Data?1582752404
MOLSDFPDBSMILESInChI
Synonyms
ValueSource
20alpha,22beta-DihydroxycholesterolHMDB
Chemical FormulaC27H46O3
Average Molecular Weight418.6523
Monoisotopic Molecular Weight418.344695338
IUPAC Name(2R,3R)-2-[(1S,2R,10S,11S,14S,15S)-5-hydroxy-2,15-dimethyltetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadec-7-en-14-yl]-6-methylheptane-2,3-diol
Traditional Name(2R,3R)-2-[(1S,2R,10S,11S,14S,15S)-5-hydroxy-2,15-dimethyltetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadec-7-en-14-yl]-6-methylheptane-2,3-diol
CAS Registry Number15234-55-6
SMILES
[H][C@@]12CC[C@]([H])([C@@](C)(O)[C@H](O)CCC(C)C)[C@@]1(C)CC[C@@]1([H])[C@@]2([H])CC=C2CC(O)CC[C@]12C
InChI Identifier
InChI=1S/C27H46O3/c1-17(2)6-11-24(29)27(5,30)23-10-9-21-20-8-7-18-16-19(28)12-14-25(18,3)22(20)13-15-26(21,23)4/h7,17,19-24,28-30H,6,8-16H2,1-5H3/t19?,20-,21-,22-,23-,24+,25-,26-,27+/m0/s1
InChI KeyISBSSBGEYIBVTO-IVMOZYHGSA-N
Chemical Taxonomy
Description belongs to the class of organic compounds known as trihydroxy bile acids, alcohols and derivatives. These are prenol lipids structurally characterized by a bile acid or alcohol which bears three hydroxyl groups.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassSteroids and steroid derivatives
Sub ClassBile acids, alcohols and derivatives
Direct ParentTrihydroxy bile acids, alcohols and derivatives
Alternative Parents
Substituents
  • Cholesterol
  • Cholesterol-skeleton
  • Cholestane-skeleton
  • Trihydroxy bile acid, alcohol, or derivatives
  • 22-hydroxysteroid
  • 20-hydroxysteroid
  • Hydroxysteroid
  • 3-hydroxy-delta-5-steroid
  • 3-hydroxysteroid
  • Delta-5-steroid
  • Cyclic alcohol
  • Tertiary alcohol
  • Secondary alcohol
  • Organooxygen compound
  • Hydrocarbon derivative
  • Organic oxygen compound
  • Alcohol
  • Aliphatic homopolycyclic compound
Molecular FrameworkAliphatic homopolycyclic compounds
External DescriptorsNot Available
Ontology
Disposition

Route of exposure:

Biological location:

Source:

Process

Naturally occurring process:

Role

Industrial application:

Biological role:

Physical Properties
StateSolid
Experimental Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Predicted Properties
PropertyValueSource
Water Solubility0.008 g/LALOGPS
logP5.08ALOGPS
logP4.72ChemAxon
logS-4.7ALOGPS
pKa (Strongest Acidic)13.61ChemAxon
pKa (Strongest Basic)-1.4ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count3ChemAxon
Polar Surface Area60.69 ŲChemAxon
Rotatable Bond Count5ChemAxon
Refractivity123.66 m³·mol⁻¹ChemAxon
Polarizability51.5 ųChemAxon
Number of Rings4ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Spectra
Spectrum TypeDescriptionSplash KeyView
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-0udi-4259400000-35c8f139c691d00dfc8eSpectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (3 TMS) - 70eV, Positivesplash10-00xr-2111139000-a480b3deb74eef32e383Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0uxr-1014900000-d02629f92bcfa0d4d5bdSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0ab9-8098400000-ec5061b658871254b471Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0a4i-9065000000-9198f9a283da1d4a6a06Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-014i-0003900000-7cd68582455580a1aeebSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-01ba-2397500000-8b9915c82bf3ecb52681Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-00xr-7289100000-1e37d62442300af9ead1Spectrum
Biological Properties
Cellular Locations
  • Extracellular
Biospecimen LocationsNot Available
Tissue LocationsNot Available
Pathways
Normal Concentrations
Not Available
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB024066
KNApSAcK IDNot Available
Chemspider IDNot Available
KEGG Compound IDC05501
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound53477897
PDB IDNot Available
ChEBI ID1294
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB ID
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General ReferencesNot Available

Enzymes

Enzyme Details
1. Cholesterol side-chain cleavage enzyme, mitochondrial
General function:
Involved in monooxygenase activity
Specific function:
Catalyzes the side-chain cleavage reaction of cholesterol to pregnenolone.
Gene Name:
CYP11A1
Uniprot ID:
P05108
Molecular weight:
60101.87
Reactions
20a,22b-Dihydroxycholesterol + Oxygen + Reduced adrenal ferredoxin + Hydrogen Ion → 4-Methylpentanal + Pregnenolone + Water + Oxidized adrenal ferredoxindetails
20alpha-Hydroxycholesterol + Oxygen + Reduced adrenal ferredoxin + Hydrogen Ion → 20a,22b-Dihydroxycholesterol + Water + Oxidized adrenal ferredoxindetails
22b-Hydroxycholesterol + Oxygen + Reduced adrenal ferredoxin + Hydrogen Ion → 20a,22b-Dihydroxycholesterol + Water + Oxidized adrenal ferredoxindetails