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Showing metabocard for 20alpha-Hydroxycholesterol (HMDB0006283)

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IdentificationTaxonomyOntologyPhysical propertiesSpectraBiological propertiesConcentrationsLinksReferencesenzymes (2) Show 2 proteinsXML
enzymes (2) Show 2 proteins
Record Information
Version4.0
StatusExpected but not Quantified
Creation Date2007-05-22 21:16:34 UTC
Update Date2020-02-26 21:26:19 UTC
HMDB IDHMDB0006283
Secondary Accession Numbers
  • HMDB06283
Metabolite Identification
Common Name20alpha-Hydroxycholesterol
Description20alpha-Hydroxycholesterol belongs to the class of organic compounds known as cholesterols and derivatives. Cholesterols and derivatives are compounds containing a 3-hydroxylated cholestane core. Thus, 20alpha-hydroxycholesterol is considered to be a sterol lipid molecule. 20alpha-Hydroxycholesterol is a very hydrophobic molecule, practically insoluble (in water), and relatively neutral.
Structure
Data?1582752379
MOLSDFPDBSMILESInChI
Synonyms
ValueSource
20a-HydroxycholesterolGenerator
20Α-hydroxycholesterolGenerator
(3beta,20R)-Cholest-5-ene-3,20-diolHMDB
20-HydroxycholesterolHMDB
20alpha-Hydroxy cholesterolHMDB
20-Hydroxycholesterol, (3beta,20 xi)-isomerHMDB
20-Hydroxycholesterol, 3H-labeled, (3beta,20 xi)-isomerHMDB
20R-HydroxycholesterolHMDB
(20S)-20-HydroxycholesterolHMDB
(20S)-Cholest-5-ene-3 beta,20-diolHMDB
20 alpha-HydroxycholesterolHMDB
Chemical FormulaC27H46O2
Average Molecular Weight402.6529
Monoisotopic Molecular Weight402.349780716
IUPAC Name(1S,2R,5S,10S,11S,14S,15S)-14-[(2R)-2-hydroxy-6-methylheptan-2-yl]-2,15-dimethyltetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadec-7-en-5-ol
Traditional Name20a-hydroxy cholesterol
CAS Registry Number516-72-3
SMILES
CC(C)CCC[C@@](C)(O)[C@H]1CC[C@H]2[C@@H]3CC=C4C[C@@H](O)CC[C@]4(C)[C@H]3CC[C@]12C
InChI Identifier
InChI=1S/C27H46O2/c1-18(2)7-6-14-27(5,29)24-11-10-22-21-9-8-19-17-20(28)12-15-25(19,3)23(21)13-16-26(22,24)4/h8,18,20-24,28-29H,6-7,9-17H2,1-5H3/t20-,21-,22-,23-,24-,25-,26-,27+/m0/s1
InChI KeyMCKLJFJEQRYRQT-MGNSQDQZSA-N
Chemical Taxonomy
Description belongs to the class of organic compounds known as cholesterols and derivatives. Cholesterols and derivatives are compounds containing a 3-hydroxylated cholestane core.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassSteroids and steroid derivatives
Sub ClassCholestane steroids
Direct ParentCholesterols and derivatives
Alternative Parents
Substituents
  • Cholesterol
  • Cholesterol-skeleton
  • 20-hydroxysteroid
  • 3-beta-hydroxy-delta-5-steroid
  • Hydroxysteroid
  • 3-hydroxy-delta-5-steroid
  • 3-hydroxysteroid
  • 3-beta-hydroxysteroid
  • Delta-5-steroid
  • Tertiary alcohol
  • Cyclic alcohol
  • Secondary alcohol
  • Organooxygen compound
  • Hydrocarbon derivative
  • Organic oxygen compound
  • Alcohol
  • Aliphatic homopolycyclic compound
Molecular FrameworkAliphatic homopolycyclic compounds
External Descriptors
Ontology
Physiological effect

Health effect:

Disposition

Route of exposure:

Source:

Biological location:

Process

Naturally occurring process:

Role

Biological role:

Industrial application:

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 Solubility0.00057 g/LALOGPS
logP6.06ALOGPS
logP5.8ChemAxon
logS-5.8ALOGPS
pKa (Strongest Acidic)18.2ChemAxon
pKa (Strongest Basic)-0.26ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area40.46 ŲChemAxon
Rotatable Bond Count5ChemAxon
Refractivity122.3 m³·mol⁻¹ChemAxon
Polarizability51.1 ųChemAxon
Number of Rings4ChemAxon
BioavailabilityYesChemAxon
Rule of FiveNoChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Spectra
Spectrum TypeDescriptionSplash KeyView
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-007c-1139000000-2c00b5523723b960fa5aSpectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (2 TMS) - 70eV, Positivesplash10-001i-3011490000-84aa9e3675270a653af2Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0f79-0009200000-78634a50a076fbe30975Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-05tr-3039100000-08dfa0b5e30063e9930aSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0avi-8189000000-c3bb06d3d099c9c4f440Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0udi-0003900000-4b881293f669607058ccSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0ue9-1039800000-4c4801e96fa5d9126da5Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-059i-3089000000-806365cc5d181d0d25d9Spectrum
Biological Properties
Cellular Locations
  • Extracellular
  • Membrane
  • Mitochondria
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 IDDB04704
Phenol Explorer Compound IDNot Available
FooDB IDFDB023876
KNApSAcK IDNot Available
Chemspider ID389586
KEGG Compound IDC05500
BioCyc ID20A-HYDROXY-CHOLESTEROL
BiGG ID1443018
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound440711
PDB IDHC2
ChEBI ID1296
Food Biomarker OntologyNot Available
VMH ID20AHCHSTEROL
MarkerDB ID
References
Synthesis ReferenceMijares, A.; Cargill, David I.; Glasel, Jay A.; Lieberman, Seymour. C-20 epimers of 20-hydroxycholesterol. Journal of Organic Chemistry (1967), 32(3), 810-12.
Material Safety Data Sheet (MSDS)Download (PDF)
General References
  1. Sharma RK, Ahmed NK, Shanker G: Metabolic regulation of steroidogenesis in isolated adrenal cells of rat. Relationship of adrenocorticotropin-, adenosine 3':5'-monophosphate-and guanosine 3':5'-monophosphate-stimulated steroidogenesis with the activation of protein kinase. Eur J Biochem. 1976 Nov 15;70(2):427-33. [PubMed:188647 ]

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
Cholesterol + Oxygen + Hydrogen Ion + Reduced adrenal ferredoxin → 20alpha-Hydroxycholesterol + Water + Oxidized adrenal ferredoxindetails
20alpha-Hydroxycholesterol + Oxygen + Reduced adrenal ferredoxin + Hydrogen Ion → 20a,22b-Dihydroxycholesterol + Water + Oxidized adrenal ferredoxindetails
Enzyme Details
2. Steroid 17-alpha-hydroxylase/17,20 lyase
General function:
Involved in monooxygenase activity
Specific function:
Conversion of pregnenolone and progesterone to their 17-alpha-hydroxylated products and subsequently to dehydroepiandrosterone (DHEA) and androstenedione. Catalyzes both the 17-alpha-hydroxylation and the 17,20-lyase reaction. Involved in sexual development during fetal life and at puberty.
Gene Name:
CYP17A1
Uniprot ID:
P05093
Molecular weight:
57369.995
Reactions
20alpha-Hydroxycholesterol + NADPH + Hydrogen Ion + Oxygen → 17a,20a-Dihydroxycholesterol + NADP + Waterdetails