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Record Information
Version5.0
StatusDetected and Quantified
Creation Date2006-05-22 14:17:39 UTC
Update Date2022-03-07 02:49:13 UTC
HMDB IDHMDB0002176
Secondary Accession Numbers
  • HMDB02176
Metabolite Identification
Common NameEthylmethylacetic acid
DescriptionEthylmethylacetic acid, also known as alpha-methyl butyric acid or a-methyl butyrate, belongs to the class of organic compounds known as methyl-branched fatty acids. These are fatty acids with an acyl chain that has a methyl branch. Usually, they are saturated and contain only one or more methyl group. However, branches other than methyl may be present. Ethylmethylacetic acid is a very hydrophobic molecule, practically insoluble in water, and relatively neutral.
Structure
Data?1582752233
Synonyms
ValueSource
2-Methybutyric acidChEBI
alpha-Methyl butyric acidChEBI
alpha-Methylbutyric acidChEBI
Butane-2-carboxylic acidChEBI
Methylethylacetic acidChEBI
2-Methylbutyric acidKegg
2-MethybutyrateGenerator
a-Methyl butyrateGenerator
a-Methyl butyric acidGenerator
alpha-Methyl butyrateGenerator
Α-methyl butyrateGenerator
Α-methyl butyric acidGenerator
a-MethylbutyrateGenerator
a-Methylbutyric acidGenerator
alpha-MethylbutyrateGenerator
Α-methylbutyrateGenerator
Α-methylbutyric acidGenerator
Butane-2-carboxylateGenerator
MethylethylacetateGenerator
2-MethylbutyrateGenerator
EthylmethylacetateGenerator
(+/-)-2-methylbutyrateHMDB
(+/-)-2-methylbutyric acidHMDB
2-EthylpropionateHMDB
2-Ethylpropionic acidHMDB
2-Methyl butyrateHMDB
2-Methyl butyric acidHMDB
2-MethylbutanoateHMDB, Generator
2-Methylbutanoic acidHMDB
D-2-Methyl butyrateHMDB
D-2-Methyl butyric acidHMDB
DL-2-Methy butyrateHMDB
DL-2-Methy butyric acidHMDB
DL-2-MethylbutyrateHMDB
DL-2-Methylbutyric acidHMDB
2-Methylbutyrate, (+-)-isomerMeSH, HMDB
2-Methylbutyrate, sodium saltMeSH, HMDB
RS-2-MethylbutyrateMeSH, HMDB
Ethylmethylacetic acidChEBI
Chemical FormulaC5H10O2
Average Molecular Weight102.1317
Monoisotopic Molecular Weight102.068079564
IUPAC Name2-methylbutanoic acid
Traditional Name(+-)-2-methylbutyrate
CAS Registry Number116-53-0
SMILES
CCC(C)C(O)=O
InChI Identifier
InChI=1S/C5H10O2/c1-3-4(2)5(6)7/h4H,3H2,1-2H3,(H,6,7)
InChI KeyWLAMNBDJUVNPJU-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as methyl-branched fatty acids. These are fatty acids with an acyl chain that has a methyl branch. Usually, they are saturated and contain only one or more methyl group. However, branches other than methyl may be present.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassFatty Acyls
Sub ClassFatty acids and conjugates
Direct ParentMethyl-branched fatty acids
Alternative Parents
Substituents
  • Methyl-branched fatty acid
  • Monocarboxylic acid or derivatives
  • Carboxylic acid
  • Carboxylic acid derivative
  • Organic oxygen compound
  • Organic oxide
  • Hydrocarbon derivative
  • Organooxygen compound
  • Carbonyl group
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External Descriptors
Ontology
Physiological effect

Adverse health effect

Disposition

Biological location

Physical Properties
StateSolid
Experimental Molecular Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling Point176.00 to 177.00 °C. @ 760.00 mm HgThe Good Scents Company Information System
Water Solubility45 mg/mL at 20 °CNot Available
LogP1.18HANSCH,C ET AL. (1995)
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
PropertyValueSource
Water Solubility57.2 g/LALOGPS
logP1.47ALOGPS
logP1.46ChemAxon
logS-0.25ALOGPS
pKa (Strongest Acidic)4.97ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area37.3 ŲChemAxon
Rotatable Bond Count2ChemAxon
Refractivity26.45 m³·mol⁻¹ChemAxon
Polarizability10.98 ųChemAxon
Number of Rings0ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterNoChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DarkChem[M+H]+120.6731661259
DarkChem[M-H]-115.54831661259
DeepCCS[M+H]+129.88930932474
DeepCCS[M-H]-127.0930932474
DeepCCS[M-2H]-163.52830932474
DeepCCS[M+Na]+138.12230932474

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
Ethylmethylacetic acidCCC(C)C(O)=O1615.3Standard polar33892256
Ethylmethylacetic acidCCC(C)C(O)=O829.3Standard non polar33892256
Ethylmethylacetic acidCCC(C)C(O)=O863.8Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
Ethylmethylacetic acid,1TMS,isomer #1CCC(C)C(=O)O[Si](C)(C)C938.5Semi standard non polar33892256
Ethylmethylacetic acid,1TBDMS,isomer #1CCC(C)C(=O)O[Si](C)(C)C(C)(C)C1154.2Semi standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Experimental GC-MSGC-MS Spectrum - Ethylmethylacetic acid EI-B (Non-derivatized)splash10-05i3-9000000000-0aaa78177c0a6f4e0f302017-09-12HMDB team, MONA, MassBankView Spectrum
Experimental GC-MSGC-MS Spectrum - Ethylmethylacetic acid EI-B (Non-derivatized)splash10-05i3-9000000000-0aaa78177c0a6f4e0f302018-05-18HMDB team, MONA, MassBankView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Ethylmethylacetic acid GC-MS (Non-derivatized) - 70eV, Positivesplash10-056r-9000000000-2909ffab0f5a63851edf2016-09-22Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Ethylmethylacetic acid GC-MS (1 TMS) - 70eV, Positivesplash10-05dr-9200000000-d03c368f82e8aafbbf2e2017-10-06Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Ethylmethylacetic acid GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Ethylmethylacetic acid GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum
MSMass Spectrum (Electron Ionization)splash10-05i0-9000000000-5202133990304f535e3e2015-03-01Not AvailableView Spectrum

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Experimental LC-MS/MSLC-MS/MS Spectrum - Ethylmethylacetic acid EI-B (HITACHI M-80B) , Positive-QTOFsplash10-05i3-9000000000-1b5a036458bffab2edb22012-08-31HMDB team, MONAView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Ethylmethylacetic acid 10V, Positive-QTOFsplash10-0udr-9500000000-015593bb5625d47062e02015-04-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Ethylmethylacetic acid 20V, Positive-QTOFsplash10-0a4r-9100000000-9cefc93a02ed409afaa72015-04-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Ethylmethylacetic acid 40V, Positive-QTOFsplash10-0a4i-9000000000-4c09f00d4b395429c15f2015-04-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Ethylmethylacetic acid 10V, Positive-QTOFsplash10-0udr-9500000000-015593bb5625d47062e02015-04-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Ethylmethylacetic acid 20V, Positive-QTOFsplash10-0a4r-9100000000-9cefc93a02ed409afaa72015-04-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Ethylmethylacetic acid 40V, Positive-QTOFsplash10-0a4i-9000000000-4c09f00d4b395429c15f2015-04-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Ethylmethylacetic acid 10V, Negative-QTOFsplash10-0udi-2900000000-91099c4563c2a38048c72015-04-25Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Ethylmethylacetic acid 20V, Negative-QTOFsplash10-0pb9-9500000000-614d914711126947b2cc2015-04-25Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Ethylmethylacetic acid 40V, Negative-QTOFsplash10-0a4i-9000000000-0c48b735fe7cb3bd438f2015-04-25Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Ethylmethylacetic acid 10V, Negative-QTOFsplash10-0udi-2900000000-91099c4563c2a38048c72015-04-25Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Ethylmethylacetic acid 20V, Negative-QTOFsplash10-0pb9-9500000000-614d914711126947b2cc2015-04-25Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Ethylmethylacetic acid 40V, Negative-QTOFsplash10-0a4i-9000000000-0c48b735fe7cb3bd438f2015-04-25Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Ethylmethylacetic acid 10V, Negative-QTOFsplash10-0udi-0900000000-4c159e60dacc58e6ba982021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Ethylmethylacetic acid 20V, Negative-QTOFsplash10-0udi-2900000000-3de63f631f358f44d6632021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Ethylmethylacetic acid 40V, Negative-QTOFsplash10-0a4i-9000000000-49980d35bd5bcf94041b2021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Ethylmethylacetic acid 10V, Positive-QTOFsplash10-0zg0-9500000000-ebceed22ebf0c3f30cbf2021-09-23Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Ethylmethylacetic acid 20V, Positive-QTOFsplash10-0a4i-9000000000-ee8b144eb008ebfb745c2021-09-23Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Ethylmethylacetic acid 40V, Positive-QTOFsplash10-0a4l-9000000000-b0c600bc4b289c4f5f6d2021-09-23Wishart LabView Spectrum

NMR Spectra

Spectrum TypeDescriptionDeposition DateSourceView
Experimental 1D NMR1H NMR Spectrum (1D, 500 MHz, H2O, experimental)2012-12-05Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 100 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 100 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 200 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 200 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 300 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 300 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 400 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 400 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 500 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 500 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 600 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 600 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 700 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 700 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 800 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 800 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 900 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 900 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 1000 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 1000 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Biological Properties
Cellular Locations
  • Extracellular
  • Membrane
Biospecimen Locations
  • Feces
  • Saliva
  • Urine
Tissue LocationsNot Available
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Normal
details
FecesDetected but not QuantifiedNot QuantifiedNot SpecifiedNot Specified
Normal
details
FecesDetected but not QuantifiedNot QuantifiedChildren (1-13 years old)BothNormal details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Normal
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)BothNormal details
FecesDetected and Quantified735.913 +/- 226.276 nmol/g wet fecesNot SpecifiedNot Specified
Normal
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Normal
details
FecesDetected but not QuantifiedNot QuantifiedChildren (1-13 years old)Not Specified
Normal
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Normal
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Normal
details
FecesDetected and Quantified80-2120 nmol/g wet fecesAdult (>18 years old)Both
Normal
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Normal
details
SalivaDetected and Quantified8.04 +/- 7.66 uMAdult (>18 years old)BothNormal
    • Zerihun T. Dame, ...
details
UrineDetected and Quantified0.0097 nmol/mmol creatinineChildren (1-13 years old)MaleNormal details
Abnormal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Irritable bowel syndrome
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Ulcerative colitis
details
FecesDetected but not QuantifiedNot QuantifiedChildren (1-13 years old)BothAutism details
FecesDetected but not QuantifiedNot QuantifiedChildren (1-13 years old)BothPervasive Developmental Disorder Not Otherwise Specified details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Campylobacter jejuni infection
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Clostridium difficile infection
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)BothCrohns disease details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)BothUlcerative colitis details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Ulcerative Colitis
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Ulcerative colitis
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Crohn's disease
details
FecesDetected but not QuantifiedNot QuantifiedChildren (1-13 years old)Not Specified
Treated celiac disease
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Nonalcoholic fatty liver disease (NAFLD)
details
Associated Disorders and Diseases
Disease References
Ulcerative colitis
  1. Garner CE, Smith S, de Lacy Costello B, White P, Spencer R, Probert CS, Ratcliffe NM: Volatile organic compounds from feces and their potential for diagnosis of gastrointestinal disease. FASEB J. 2007 Jun;21(8):1675-88. Epub 2007 Feb 21. [PubMed:17314143 ]
  2. Le Gall G, Noor SO, Ridgway K, Scovell L, Jamieson C, Johnson IT, Colquhoun IJ, Kemsley EK, Narbad A: Metabolomics of fecal extracts detects altered metabolic activity of gut microbiota in ulcerative colitis and irritable bowel syndrome. J Proteome Res. 2011 Sep 2;10(9):4208-18. doi: 10.1021/pr2003598. Epub 2011 Aug 8. [PubMed:21761941 ]
  3. De Preter V, Machiels K, Joossens M, Arijs I, Matthys C, Vermeire S, Rutgeerts P, Verbeke K: Faecal metabolite profiling identifies medium-chain fatty acids as discriminating compounds in IBD. Gut. 2015 Mar;64(3):447-58. doi: 10.1136/gutjnl-2013-306423. Epub 2014 May 8. [PubMed:24811995 ]
  4. Ahmed I, Greenwood R, Costello B, Ratcliffe N, Probert CS: Investigation of faecal volatile organic metabolites as novel diagnostic biomarkers in inflammatory bowel disease. Aliment Pharmacol Ther. 2016 Mar;43(5):596-611. doi: 10.1111/apt.13522. Epub 2016 Jan 25. [PubMed:26806034 ]
Irritable bowel syndrome
  1. Le Gall G, Noor SO, Ridgway K, Scovell L, Jamieson C, Johnson IT, Colquhoun IJ, Kemsley EK, Narbad A: Metabolomics of fecal extracts detects altered metabolic activity of gut microbiota in ulcerative colitis and irritable bowel syndrome. J Proteome Res. 2011 Sep 2;10(9):4208-18. doi: 10.1021/pr2003598. Epub 2011 Aug 8. [PubMed:21761941 ]
Celiac disease
  1. Di Cagno R, De Angelis M, De Pasquale I, Ndagijimana M, Vernocchi P, Ricciuti P, Gagliardi F, Laghi L, Crecchio C, Guerzoni ME, Gobbetti M, Francavilla R: Duodenal and faecal microbiota of celiac children: molecular, phenotype and metabolome characterization. BMC Microbiol. 2011 Oct 4;11:219. doi: 10.1186/1471-2180-11-219. [PubMed:21970810 ]
Nonalcoholic fatty liver disease
  1. Raman M, Ahmed I, Gillevet PM, Probert CS, Ratcliffe NM, Smith S, Greenwood R, Sikaroodi M, Lam V, Crotty P, Bailey J, Myers RP, Rioux KP: Fecal microbiome and volatile organic compound metabolome in obese humans with nonalcoholic fatty liver disease. Clin Gastroenterol Hepatol. 2013 Jul;11(7):868-75.e1-3. doi: 10.1016/j.cgh.2013.02.015. Epub 2013 Feb 27. [PubMed:23454028 ]
Autism
  1. De Angelis M, Piccolo M, Vannini L, Siragusa S, De Giacomo A, Serrazzanetti DI, Cristofori F, Guerzoni ME, Gobbetti M, Francavilla R: Fecal microbiota and metabolome of children with autism and pervasive developmental disorder not otherwise specified. PLoS One. 2013 Oct 9;8(10):e76993. doi: 10.1371/journal.pone.0076993. eCollection 2013. [PubMed:24130822 ]
Pervasive developmental disorder not otherwise specified
  1. De Angelis M, Piccolo M, Vannini L, Siragusa S, De Giacomo A, Serrazzanetti DI, Cristofori F, Guerzoni ME, Gobbetti M, Francavilla R: Fecal microbiota and metabolome of children with autism and pervasive developmental disorder not otherwise specified. PLoS One. 2013 Oct 9;8(10):e76993. doi: 10.1371/journal.pone.0076993. eCollection 2013. [PubMed:24130822 ]
Crohn's disease
  1. De Preter V, Machiels K, Joossens M, Arijs I, Matthys C, Vermeire S, Rutgeerts P, Verbeke K: Faecal metabolite profiling identifies medium-chain fatty acids as discriminating compounds in IBD. Gut. 2015 Mar;64(3):447-58. doi: 10.1136/gutjnl-2013-306423. Epub 2014 May 8. [PubMed:24811995 ]
  2. Ahmed I, Greenwood R, Costello B, Ratcliffe N, Probert CS: Investigation of faecal volatile organic metabolites as novel diagnostic biomarkers in inflammatory bowel disease. Aliment Pharmacol Ther. 2016 Mar;43(5):596-611. doi: 10.1111/apt.13522. Epub 2016 Jan 25. [PubMed:26806034 ]
Associated OMIM IDs
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB008135
KNApSAcK IDC00029461
Chemspider ID8012
KEGG Compound IDC18319
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN ID6528
PubChem Compound8314
PDB IDNot Available
ChEBI ID37070
Food Biomarker OntologyNot Available
VMH ID2MBUT
MarkerDB IDNot Available
Good Scents IDrw1056421
References
Synthesis ReferenceBueding, Ernest; Yale, Helen W. Production of a-methylbutyric acid by bacteria-free Ascaris lumbricoides. Journal of Biological Chemistry (1951), 193 411-23.
Material Safety Data Sheet (MSDS)Download (PDF)
General References
  1. Korman SH, Andresen BS, Zeharia A, Gutman A, Boneh A, Pitt JJ: 2-ethylhydracrylic aciduria in short/branched-chain acyl-CoA dehydrogenase deficiency: application to diagnosis and implications for the R-pathway of isoleucine oxidation. Clin Chem. 2005 Mar;51(3):610-7. Epub 2004 Dec 22. [PubMed:15615815 ]
  2. Schatowitz B, Gercken G: Simultaneous determination of C2-C22 non-esterified fatty acids and other metabolically relevant carboxylic acids in biological material by gas chromatography of their benzyl esters. J Chromatogr. 1988 Mar 18;425(2):257-68. [PubMed:3372640 ]

Enzymes

General function:
Involved in transferase activity, transferring hexosyl groups
Specific function:
UDPGT is of major importance in the conjugation and subsequent elimination of potentially toxic xenobiotics and endogenous compounds. This isoform glucuronidates bilirubin IX-alpha to form both the IX-alpha-C8 and IX-alpha-C12 monoconjugates and diconjugate. Is also able to catalyze the glucuronidation of 17beta-estradiol, 17alpha-ethinylestradiol, 1-hydroxypyrene, 4-methylumbelliferone, 1-naphthol, paranitrophenol, scopoletin, and umbelliferone.
Gene Name:
UGT1A1
Uniprot ID:
P22309
Molecular weight:
59590.91
Reactions
Ethylmethylacetic acid → 3,4,5-trihydroxy-6-[(2-methylbutanoyl)oxy]oxane-2-carboxylic aciddetails