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Record Information
Version3.6
Creation Date2005-11-16 15:48:42 UTC
Update Date2016-02-11 01:04:50 UTC
HMDB IDHMDB01496
Secondary Accession NumbersNone
Metabolite Identification
Common Name7a-Hydroxycholesterol
Description7alpha-hydroxycholesterol is an oxysterol and can serve as a biomarker for lipid peroxidation. (PMID: 17386651 ) Products of cholesterol oxidation accumulate within atherosclerotic plaque and have been proposed to contribute to inflammatory signalling in the diseased artery. (PMID: 17364953 ). 7alpha-hydroxycholesterol is a cholesterol oxide that has been described as biomarker of oxidative stress in subjects with impaired glucose tolerance and diabetes. (PMID: 16634125 ).
Structure
Thumb
Synonyms
ValueSource
7 alpha-HydroxycholesterolHMDB
7-a-HydroxycholesterolHMDB
7-alpha-HydroxycholesterolHMDB
7alpha-HydroxycholesterolHMDB
Cholest-5-ene-3beta,7alpha-diolHMDB
Chemical FormulaC27H46O2
Average Molecular Weight402.6529
Monoisotopic Molecular Weight402.349780716
IUPAC Name(1S,2R,5S,9S,11R,14R,15R)-2,15-dimethyl-14-[(2R)-6-methylheptan-2-yl]tetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadec-7-ene-5,9-diol
Traditional Name(1S,2R,5S,9S,11R,14R,15R)-2,15-dimethyl-14-[(2R)-6-methylheptan-2-yl]tetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadec-7-ene-5,9-diol
CAS Registry NumberNot Available
SMILES
CC(C)CCC[C@@H](C)[C@H]1CC[C@@H]2C3[C@H](O)C=C4C[C@@H](O)CC[C@]4(C)[C@H]3CC[C@]12C
InChI Identifier
InChI=1S/C27H46O2/c1-17(2)7-6-8-18(3)21-9-10-22-25-23(12-14-27(21,22)5)26(4)13-11-20(28)15-19(26)16-24(25)29/h16-18,20-25,28-29H,6-15H2,1-5H3/t18-,20+,21-,22-,23+,24-,25?,26+,27-/m1/s1
InChI KeyInChIKey=OYXZMSRRJOYLLO-AWBHSAGMSA-N
Chemical Taxonomy
DescriptionThis compound belongs to the class of organic compounds known as cholesterols and derivatives. These 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-skeleton
  • Cholesterol
  • 7-hydroxysteroid
  • 3-beta-hydroxysteroid
  • 3-beta-hydroxy-delta-5-steroid
  • Hydroxysteroid
  • 3-hydroxysteroid
  • 3-hydroxy-delta-5-steroid
  • Delta-5-steroid
  • Cyclic alcohol
  • Secondary alcohol
  • Hydrocarbon derivative
  • Organooxygen compound
  • Alcohol
  • Aliphatic homopolycyclic compound
Molecular FrameworkAliphatic homopolycyclic compounds
External DescriptorsNot Available
Ontology
StatusDetected and Quantified
Origin
  • Endogenous
  • Food
Biofunction
  • Cell signaling
  • Fuel and energy storage
  • Fuel or energy source
  • Hormones, Membrane component
  • Membrane integrity/stability
Application
  • Nutrients
  • Stabilizers
  • Surfactants and Emulsifiers
Cellular locations
  • Extracellular
  • Membrane (predicted from logP)
  • Endoplasmic reticulum
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 Solubility0.000476 mg/mLALOGPS
logP5.61ALOGPS
logP5.96ChemAxon
logS-5.9ALOGPS
pKa (Strongest Acidic)18.2ChemAxon
pKa (Strongest Basic)-0.83ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area40.46 Å2ChemAxon
Rotatable Bond Count5ChemAxon
Refractivity122.05 m3·mol-1ChemAxon
Polarizability50.32 Å3ChemAxon
Number of Rings4ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectra
SpectraNot Available
Biological Properties
Cellular Locations
  • Extracellular
  • Membrane (predicted from logP)
  • Endoplasmic reticulum
Biofluid Locations
  • Blood
  • Cerebrospinal Fluid (CSF)
Tissue LocationNot Available
Pathways
NameSMPDB LinkKEGG Link
27-Hydroxylase DeficiencySMP00720Not Available
Bile Acid BiosynthesisSMP00035map00120
Cerebrotendinous Xanthomatosis (CTX)SMP00315Not Available
Congenital Bile Acid Synthesis Defect Type IISMP00314Not Available
Congenital Bile Acid Synthesis Defect Type IIISMP00318Not Available
Familial Hypercholanemia (FHCA)SMP00317Not Available
Zellweger SyndromeSMP00316Not Available
Normal Concentrations
BiofluidStatusValueAgeSexConditionReferenceDetails
BloodDetected and Quantified0.18 +/- 0.047 uMAdult (>18 years old)BothNormal details
BloodDetected and Quantified0.335 +/- 0.068 uMAdult (>18 years old)BothNormal details
BloodDetected and Quantified0.012 +/- 0.002 uMAdult (>18 years old)BothNormal details
Cerebrospinal Fluid (CSF)Detected and Quantified0.004 +/- 0.0016 uMAdult (>18 years old)Not SpecifiedNormal details
Abnormal Concentrations
BiofluidStatusValueAgeSexConditionReferenceDetails
BloodDetected and Quantified0.054 +/- 0.019 uMAdult (>18 years old)Both
Cirrhosis
details
Cerebrospinal Fluid (CSF)Detected and Quantified0.005 +/- 0.0021 uMAdult (>18 years old)Not SpecifiedMultiple Sclerosis details
Associated Disorders and Diseases
Disease References
Cirrhosis
  1. Hahn C, Reichel C, von Bergmann K: Serum concentration of 7 alpha-hydroxycholesterol as an indicator of bile acid synthesis in humans. J Lipid Res. 1995 Sep;36(9):2059-66. [8558093 ]
Multiple sclerosis
  1. Leoni V, Lutjohann D, Masterman T: Levels of 7-oxocholesterol in cerebrospinal fluid are more than one thousand times lower than reported in multiple sclerosis. J Lipid Res. 2005 Feb;46(2):191-5. Epub 2004 Dec 1. [15576852 ]
Associated OMIM IDs
DrugBank IDNot Available
DrugBank Metabolite IDNot Available
Phenol Explorer Compound IDNot Available
Phenol Explorer Metabolite IDNot Available
FoodDB IDFDB022655
KNApSAcK IDNot Available
Chemspider IDNot Available
KEGG Compound IDC03594
BioCyc IDCPD-266
BiGG ID42155
Wikipedia LinkNot Available
NuGOwiki LinkHMDB01496
Metagene LinkHMDB01496
METLIN ID6280
PubChem Compound53477732
PDB IDNot Available
ChEBI ID17500
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Kitano S, Yoshida Y, Kawano K, Hibi N, Niki E: Oxidative status of human low density lipoprotein isolated by anion-exchange high-performance liquid chromatography--assessment by total hydroxyoctadecadienoic acid, 7-hydroxycholesterol, and 8-iso-prostaglandin F(2alpha). Anal Chim Acta. 2007 Feb 28;585(1):86-93. Epub 2006 Dec 23. [17386651 ]
  2. Erridge C, Webb DJ, Spickett CM: 25-Hydroxycholesterol, 7beta-hydroxycholesterol and 7-ketocholesterol upregulate interleukin-8 expression independently of Toll-like receptor 1, 2, 4 or 6 signalling in human macrophages. Free Radic Res. 2007 Mar;41(3):260-6. [17364953 ]
  3. Ferderbar S, Pereira EC, Apolinario E, Bertolami MC, Faludi A, Monte O, Calliari LE, Sales JE, Gagliardi AR, Xavier HT, Abdalla DS: Cholesterol oxides as biomarkers of oxidative stress in type 1 and type 2 diabetes mellitus. Diabetes Metab Res Rev. 2007 Jan;23(1):35-42. [16634125 ]

Enzymes

General function:
Involved in monooxygenase activity
Specific function:
Catalyzes a rate-limiting step in cholesterol catabolism and bile acid biosynthesis by introducing a hydrophilic moiety at position 7 of cholesterol. Important for cholesterol homeostasis.
Gene Name:
CYP7A1
Uniprot ID:
P22680
Molecular weight:
57660.155
Reactions
Cholesterol + NADPH + Oxygen → 7a-Hydroxycholesterol + NADP + Waterdetails
Cholesterol + Oxygen + NADPH + Hydrogen Ion → 7a-Hydroxycholesterol + NADP + Waterdetails
General function:
Involved in 3-beta-hydroxy-delta5-steroid dehydrogenase activity
Specific function:
The 3-beta-HSD enzymatic system plays a crucial role in the biosynthesis of all classes of hormonal steroids. HSD VII is active against four 7-alpha-hydroxylated sterols. Does not metabolize several different C(19/21) steroids as substrates. Involved in bile acid synthesis.
Gene Name:
HSD3B7
Uniprot ID:
Q9H2F3
Molecular weight:
21322.265
Reactions
7a-Hydroxycholesterol + NAD → 7a-Hydroxy-cholestene-3-one + NADH + Hydrogen Iondetails