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Record Information
Version3.6
Creation Date2005-11-16 15:48:42 UTC
Update Date2016-02-11 01:02:33 UTC
HMDB IDHMDB00317
Secondary Accession NumbersNone
Metabolite Identification
Common Name2-Hydroxy-3-methylpentanoic acid
Description2-Hydroxy-3-methylpentanoic acid or 2-hydroxy-3-methylvaleric acid (HMVA) is an organic acid generated by L-isoleucine metabolism. It is derived from the reduction of 2-Keto-3-methylvaleric acid (KMVA), possibly through the action of a lactate dehydrogenase (PMID: 1429566 ). There are 4 stereoisomers of HMVA (2S,3S-HMVA, 2R,3R-HMVA, 2S,3R-HMVA and 2R,3S-HMVA), of which the 2S,3S and 2S,3R derivatives are generally separable. HMVA is found in the urine and blood of normal individuals but in very elevated levels in patients with maple syrup urine disease (MSUD) (PMID: 1429566 ). Maple syrup urine disease (MSUD) is an inherited metabolic disease predominantly characterized by neurological dysfunction including psychomotor/delay/mental retardation.
Structure
Thumb
Synonyms
ValueSource
(2R,3R)-2-Hydroxy-3-methyl-pentanoateHMDB
(2R,3R)-2-Hydroxy-3-methyl-pentanoic acidHMDB
(2R,3R)-2-Hydroxy-3-methylpentanoateHMDB
2-Hydroxy-3-methyl-pentanoateHMDB
2-Hydroxy-3-methyl-pentanoic acidHMDB
2-Hydroxy-3-methyl-valerateHMDB
2-Hydroxy-3-methyl-valeric acidHMDB
2-Hydroxy-3-methylpentanoateHMDB
2-Hydroxy-3-methylvalerateHMDB
2-Hydroxy-3-methylvaleric acidHMDB
a-Hydroxy-b-methylvalerateHMDB
a-Hydroxy-b-methylvaleric acidHMDB
alpha-Hydroxy-beta-methylvalerateHMDB
alpha-Hydroxy-beta-methylvaleric acidHMDB
HMVAHMDB
Chemical FormulaC6H12O3
Average Molecular Weight132.1577
Monoisotopic Molecular Weight132.07864425
IUPAC Name(2R,3R)-2-hydroxy-3-methylpentanoic acid
Traditional Name2-hydroxy-3-methyl-valerate
CAS Registry Number488-15-3
SMILES
CC[C@@H](C)[C@@H](O)C(O)=O
InChI Identifier
InChI=1S/C6H12O3/c1-3-4(2)5(7)6(8)9/h4-5,7H,3H2,1-2H3,(H,8,9)/t4-,5-/m1/s1
InChI KeyInChIKey=RILPIWOPNGRASR-RFZPGFLSSA-N
Chemical Taxonomy
DescriptionThis compound belongs to the class of organic compounds known as hydroxy fatty acids. These are fatty acids in which the chain bears a hydroxyl group.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassFatty Acyls
Sub ClassFatty acids and conjugates
Direct ParentHydroxy fatty acids
Alternative Parents
Substituents
  • Hydroxy fatty acid
  • Methyl-branched fatty acid
  • Branched fatty acid
  • Monosaccharide
  • Hydroxy acid
  • Alpha-hydroxy acid
  • Secondary alcohol
  • Monocarboxylic acid or derivatives
  • Carboxylic acid
  • Carboxylic acid derivative
  • Hydrocarbon derivative
  • Organooxygen compound
  • Carbonyl group
  • Alcohol
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External Descriptors
Ontology
StatusDetected and Quantified
Origin
  • Endogenous
  • Food
Biofunction
  • Cell signaling
  • Fuel and energy storage
  • Fuel or energy source
  • Membrane integrity/stability
Application
  • Nutrients
  • Stabilizers
  • Surfactants and Emulsifiers
Cellular locations
  • Extracellular
  • Membrane
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 Solubility149.0 mg/mLALOGPS
logP0.74ALOGPS
logP0.86ChemAxon
logS0.05ALOGPS
pKa (Strongest Acidic)4.25ChemAxon
pKa (Strongest Basic)-3.9ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area57.53 Å2ChemAxon
Rotatable Bond Count3ChemAxon
Refractivity32.44 m3·mol-1ChemAxon
Polarizability13.77 Å3ChemAxon
Number of Rings0ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectra
Spectra
Spectrum TypeDescriptionSplash Key
Predicted GC-MSPredicted GC-MS Spectrum - GC-MSNot Available
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-015i-6900000000-a4c1daf19028c3b5134fView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0a4r-9100000000-869a6d71fe88a292f540View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0a4i-9000000000-b1a7373d307d666ee4d4View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-001r-6900000000-f3e353eb7493baf38742View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-01q0-9500000000-7d4a297dfcfc8042262cView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0a4i-9000000000-befdfe1bd9ab81fcab68View in MoNA
Biological Properties
Cellular Locations
  • Extracellular
  • Membrane
Biofluid Locations
  • Saliva
  • Urine
Tissue LocationNot Available
PathwaysNot Available
Normal Concentrations
BiofluidStatusValueAgeSexConditionReferenceDetails
SalivaDetected but not QuantifiedNot ApplicableAdult (>18 years old)Male
Normal
details
SalivaDetected but not QuantifiedNot ApplicableAdult (>18 years old)Male
Normal
details
SalivaDetected but not QuantifiedNot ApplicableAdult (>18 years old)Male
Normal
details
SalivaDetected but not QuantifiedNot ApplicableAdult (>18 years old)Male
Normal
details
SalivaDetected but not QuantifiedNot ApplicableAdult (>18 years old)Male
Normal
details
SalivaDetected but not QuantifiedNot ApplicableAdult (>18 years old)Male
Normal
details
SalivaDetected but not QuantifiedNot ApplicableAdult (>18 years old)Male
Normal
details
SalivaDetected but not QuantifiedNot ApplicableAdult (>18 years old)Male
Normal
details
SalivaDetected but not QuantifiedNot ApplicableAdult (>18 years old)Male
Normal
details
SalivaDetected but not QuantifiedNot ApplicableAdult (>18 years old)Male
Normal
details
UrineDetected and Quantified6.531 +/- 5.519 umol/mmol creatinineChildren (1 - 13 years old)Not Specified
Normal
    • Mordechai, Hien, ...
details
UrineDetected and Quantified0.0 umol/mmol creatinineChildren (1 - 18 years old)Both
Normal
    • BC Children's Hos...
details
UrineDetected and Quantified3.9 (1.7-7.9) umol/mmol creatinineAdult (>18 years old)Both
Normal
details
Abnormal Concentrations
BiofluidStatusValueAgeSexConditionReferenceDetails
UrineDetected and Quantified13.765 +/- 12.068 umol/mmol creatinineChildren (1 - 13 years old)Not Specified
Eosinophilic esophagitis
    • Mordechai, Hien, ...
details
UrineDetected but not QuantifiedNot ApplicableNot AvailableNot AvailableDihydrolipoyl DH (E3) deficiency details
UrineDetected but not QuantifiedNot ApplicableNot AvailableNot AvailableMaple syrup urine disease (MSUD) details
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
DrugBank Metabolite IDNot Available
Phenol Explorer Compound IDNot Available
Phenol Explorer Metabolite IDNot Available
FoodDB IDFDB021944
KNApSAcK IDNot Available
Chemspider ID8972081
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
NuGOwiki LinkHMDB00317
Metagene LinkHMDB00317
METLIN ID5306
PubChem Compound10796774
PDB IDNot Available
ChEBI IDNot Available
References
Synthesis ReferenceMamer, O.A. & Reimer, M.L.J. "On the Mechanisms of the Formation of L-Alloisoleucine and the 2-Hydroxy-3-methylvaleric Acid.." J. Biol. Chem. 267: 22141-22147 (1992).
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Mamer OA, Reimer ML: On the mechanisms of the formation of L-alloisoleucine and the 2-hydroxy-3-methylvaleric acid stereoisomers from L-isoleucine in maple syrup urine disease patients and in normal humans. J Biol Chem. 1992 Nov 5;267(31):22141-7. [1429566 ]