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Record Information
Version5.0
StatusDetected and Quantified
Creation Date2005-11-16 15:48:42 UTC
Update Date2021-09-14 15:47:52 UTC
HMDB IDHMDB0000962
Secondary Accession Numbers
  • HMDB0006877
  • HMDB0006950
  • HMDB00962
  • HMDB06877
  • HMDB06950
Metabolite Identification
Common NameLipoamide
DescriptionLipoamide is a trivial name for 6,8-dithiooctanoic amide. It is 6,8-dithiooctanoic acid's functional form where the carboxyl group is attached to protein (or any other amine) by an amide linkage (containing -NH2) to an amino group. Lipoamide forms a thioester bond, oxidizing the disulfide bond, with acetaldehyde (pyruvate after it has been decarboxylated). It then transfers the acetaldehyde group to CoA which can then continue in the TCA cycle. Lipoamide is an intermediate in glycolysis/gluconeogenesis, citrate cycle (TCA cycle), alanine, aspartate and pyruvate metabolism, and valine, leucine and isoleucine degradation (KEGG:C00248). It is generated from dihydrolipoamide via the enzyme dihydrolipoamide dehydrogenase (EC:1.8.1.4) and then converted to S-glutaryl-dihydrolipoamide via the enzyme oxoglutarate dehydrogenase (EC:1.2.4.2).
Structure
Data?1582752167
Synonyms
ValueSource
1,2-Dithiolane-3-pentanamideChEBI
alpha-Lipoic acid amideChEBI
LipoacinChEBI
ThioctamideChEBI
Thioctic acid amideChEBI
Vitamin NChEBI
a-Lipoate amideGenerator
a-Lipoic acid amideGenerator
alpha-Lipoate amideGenerator
Α-lipoate amideGenerator
Α-lipoic acid amideGenerator
Thioctate amideGenerator
5-(1,2-Dithiolan-3-yl)-pentanamideHMDB
5-(1,2-Dithiolan-3-yl)pentanamideHMDB
5-(1,2-Dithiolan-3-yl)valeramideHMDB
5-(Dithiolan-3-yl)valeramideHMDB
alpha-LipoateHMDB
alpha-Lipoic acidHMDB
DL-6-Thioctic amideHMDB
DL-LipoamideHMDB
LipamideHMDB
LipoamidHMDB
LipoicinHMDB
LipozymeHMDB
LypoaranHMDB
PathoclonHMDB
ThioamiHMDB
ThioctamidHMDB
ThiotominHMDB
TicolinHMDB
1,2-Dithiolane-3-valeramideHMDB
6,8-Thioctic amideHMDB
alpha-Lipoic amideHMDB
Lipoamide, (+-)-isomerHMDB
Chemical FormulaC8H15NOS2
Average Molecular Weight205.341
Monoisotopic Molecular Weight205.059505487
IUPAC Name5-(1,2-dithiolan-3-yl)pentanamide
Traditional Namelipoamide
CAS Registry Number940-69-2
SMILES
NC(=O)CCCCC1CCSS1
InChI Identifier
InChI=1S/C8H15NOS2/c9-8(10)4-2-1-3-7-5-6-11-12-7/h7H,1-6H2,(H2,9,10)
InChI KeyFCCDDURTIIUXBY-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as lipoamides. Lipoamides are compounds containing a lipoamide moiety, which consists of a pentanamide attached to the C3 carbon atom of a 1,2-dithiolane ring.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassDithiolanes
Sub ClassLipoamides
Direct ParentLipoamides
Alternative Parents
Substituents
  • Lipoamide
  • Fatty amide
  • Fatty acyl
  • 1,2-dithiolane
  • Carboxamide group
  • Organic disulfide
  • Primary carboxylic acid amide
  • Carboxylic acid derivative
  • Carbonyl group
  • Organooxygen compound
  • Organonitrogen compound
  • Hydrocarbon derivative
  • Organic oxide
  • Organopnictogen compound
  • Organic oxygen compound
  • Organic nitrogen compound
  • Aliphatic heteromonocyclic compound
Molecular FrameworkAliphatic heteromonocyclic compounds
External Descriptors
Ontology
Physiological effect

Adverse health effect

Disposition

Biological location

Source

Route of exposure

Process

Naturally occurring process

Physical Properties
StateSolid
Experimental Molecular Properties
PropertyValueReference
Melting Point126.0 - 129.0 °CNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Experimental Spectral Properties

Experimental Collision Cross Sections

PredictorAdduct TypeData SourceCCS Value (Å2)Reference
AllCCS[M+H]+Not Available139.298http://allccs.zhulab.cn/database/detail?ID=AllCCS00000468
Predicted Molecular Properties
PropertyValueSource
Water Solubility0.1 g/LALOGPS
logP10(2.3) g/LALOGPS
logP10(1.31) g/LChemAxon
logS10(-3.3) g/LALOGPS
pKa (Strongest Acidic)16.45ChemAxon
pKa (Strongest Basic)-1.4ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count1ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area43.09 ŲChemAxon
Rotatable Bond Count5ChemAxon
Refractivity56.19 m³·mol⁻¹ChemAxon
Polarizability22.38 ųChemAxon
Number of Rings1ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Predicted Spectral Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DarkChem[M+H]+144.74931661259
DarkChem[M-H]-138.56731661259
AllCCS[M+H]+143.74132859911
AllCCS[M-H]-150.14332859911

Predicted Kovats Retention Indices

Not Available
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Experimental GC-MSGC-MS Spectrum - Lipoamide GC-MS (2 TMS)splash10-014i-6963000000-7e1887d53c2801b099612014-06-16HMDB team, MONA, MassBankView Spectrum
Experimental GC-MSGC-MS Spectrum - Lipoamide GC-MS (1 TMS)splash10-017l-3920000000-a3a7a08acf06d41c9b732014-06-16HMDB team, MONA, MassBankView Spectrum
Experimental GC-MSGC-MS Spectrum - Lipoamide GC-MS (Non-derivatized)splash10-014i-6963000000-7e1887d53c2801b099612017-09-12HMDB team, MONA, MassBankView Spectrum
Experimental GC-MSGC-MS Spectrum - Lipoamide GC-MS (Non-derivatized)splash10-017l-3920000000-a3a7a08acf06d41c9b732017-09-12HMDB team, MONA, MassBankView Spectrum
Experimental GC-MSGC-MS Spectrum - Lipoamide GC-EI-TOF (Non-derivatized)splash10-014i-1910000000-b6ee336856e354af81142017-09-12HMDB team, MONA, MassBankView Spectrum
Experimental GC-MSGC-MS Spectrum - Lipoamide GC-EI-TOF (Non-derivatized)splash10-00di-3900000000-60cad9dd198c3ad64ed72017-09-12HMDB team, MONA, MassBankView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Lipoamide GC-MS (Non-derivatized) - 70eV, Positivesplash10-0f96-9800000000-ac967ad86beefc26c9832016-09-22Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Lipoamide GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Experimental LC-MS/MSLC-MS/MS Spectrum - Lipoamide Quattro_QQQ 10V, Positive-QTOF (Annotated)splash10-000i-0900000000-24fca44fc025dbd6be182012-07-24HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Lipoamide Quattro_QQQ 25V, Positive-QTOF (Annotated)splash10-0ziu-9700000000-7dfd23f450bdfd5811002012-07-24HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Lipoamide Quattro_QQQ 40V, Positive-QTOF (Annotated)splash10-056u-9000000000-13583c4eb6b06a56c3922012-07-24HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Lipoamide LC-ESI-QQ (API3000, Applied Biosystems) 10V, Positive-QTOFsplash10-052r-2920000000-a4fb7176abf63e581f5e2012-08-31HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Lipoamide LC-ESI-QQ (API3000, Applied Biosystems) 20V, Positive-QTOFsplash10-000i-2900000000-10a079a84f024494ae232012-08-31HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Lipoamide LC-ESI-QQ (API3000, Applied Biosystems) 30V, Positive-QTOFsplash10-0zfr-9800000000-b01332176d6829b1eaa12012-08-31HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Lipoamide LC-ESI-QQ (API3000, Applied Biosystems) 40V, Positive-QTOFsplash10-0udl-9400000000-7a03c741edae36dff9cf2012-08-31HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Lipoamide LC-ESI-QQ (API3000, Applied Biosystems) 50V, Positive-QTOFsplash10-0a5c-9100000000-7b44dfbfcbb0cc5162542012-08-31HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Lipoamide LC-ESI-IT (LC/MSD Trap XCT, Agilent Technologies) , Positive-QTOFsplash10-000i-0900000000-50512172ce038bce29952012-08-31HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Lipoamide LC-ESI-IT (LC/MSD Trap XCT, Agilent Technologies) , Positive-QTOFsplash10-03di-0900000000-7652a33c17a37b6914aa2012-08-31HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Lipoamide LC-ESI-IT (LC/MSD Trap XCT, Agilent Technologies) , Positive-QTOFsplash10-0udi-0900000000-0df59a6540bede8a4a792012-08-31HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Lipoamide LC-ESI-QQ , positive-QTOFsplash10-052r-2920000000-a4fb7176abf63e581f5e2017-09-14HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Lipoamide LC-ESI-QQ , positive-QTOFsplash10-000i-2900000000-158c946037c5d7bb3e502017-09-14HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Lipoamide LC-ESI-QQ , positive-QTOFsplash10-0zfr-9800000000-b01332176d6829b1eaa12017-09-14HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Lipoamide LC-ESI-QQ , positive-QTOFsplash10-0udl-9400000000-7a03c741edae36dff9cf2017-09-14HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Lipoamide LC-ESI-QQ , positive-QTOFsplash10-0a5c-9100000000-7b44dfbfcbb0cc5162542017-09-14HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Lipoamide LC-ESI-IT , positive-QTOFsplash10-000i-0900000000-fa779b1c88469a7323212017-09-14HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Lipoamide , positive-QTOFsplash10-000i-1900000000-9e4b6873b24c66cf9f692017-09-14HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Lipoamide 10V, Positive-QTOFsplash10-01p9-0900000000-b37ce6b25b9feef09b962021-09-20HMDB team, MONAView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Lipoamide 10V, Positive-QTOFsplash10-0a4r-0940000000-d79e1aa52057e567d71f2016-09-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Lipoamide 20V, Positive-QTOFsplash10-052r-3900000000-abd8148048c5f282d8892016-09-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Lipoamide 40V, Positive-QTOFsplash10-0adr-9500000000-9769c619660ab6af46d22016-09-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Lipoamide 10V, Negative-QTOFsplash10-0zml-1920000000-79d57d488cb8fbc804a32016-09-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Lipoamide 20V, Negative-QTOFsplash10-0fdo-4910000000-d264eaf6e242c36bc5632016-09-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Lipoamide 40V, Negative-QTOFsplash10-0006-9000000000-289d2f20046f7819a7ca2016-09-12Wishart LabView Spectrum

NMR Spectra

Spectrum TypeDescriptionDeposition DateSourceView
Experimental 2D NMR[1H, 13C]-HSQC NMR Spectrum (2D, 600 MHz, CD3OD, experimental)2012-12-05Wishart LabView Spectrum
Biological Properties
Cellular Locations
  • Membrane (predicted from logP)
  • Mitochondria
Biospecimen Locations
  • Saliva
Tissue Locations
  • Placenta
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
SalivaDetected and Quantified0.153 +/- 0.182 uMAdult (>18 years old)Female
Normal
    • Sugimoto et al. (...
details
SalivaDetected and Quantified0.278 +/- 0.208 uMAdult (>18 years old)Not Specified
Normal
    • Sugimoto et al. (...
details
SalivaDetected and Quantified0.281 +/- 0.203 uMAdult (>18 years old)Female
Normal
    • Sugimoto et al. (...
details
SalivaDetected and Quantified0.424 +/- 0.941 uMAdult (>18 years old)Male
Normal
    • Sugimoto et al. (...
details
SalivaDetected and Quantified0.439 +/- 0.254 uMAdult (>18 years old)Not Specified
Normal
    • Sugimoto et al. (...
details
SalivaDetected and Quantified0.549 +/- 0.674 uMAdult (>18 years old)Female
Normal
    • Sugimoto et al. (...
details
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB022340
KNApSAcK IDNot Available
Chemspider ID840
KEGG Compound IDC00248
BioCyc IDLIPOAMIDE
BiGG ID34384
Wikipedia LinkLipoamide
METLIN ID3372
PubChem Compound863
PDB IDNot Available
ChEBI ID17460
Food Biomarker OntologyNot Available
VMH IDLPAM
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceXu, Yaming; Li, Zhitian; Gu, Yunlong. Synthesis of thioctamide. Faming Zhuanli Shenqing Gongkai Shuomingshu (1997), 5 pp.
Material Safety Data Sheet (MSDS)Download (PDF)
General References
  1. Arner ES, Nordberg J, Holmgren A: Efficient reduction of lipoamide and lipoic acid by mammalian thioredoxin reductase. Biochem Biophys Res Commun. 1996 Aug 5;225(1):268-74. [PubMed:8769129 ]
  2. Nordman T, Xia L, Bjorkhem-Bergman L, Damdimopoulos A, Nalvarte I, Arner ES, Spyrou G, Eriksson LC, Bjornstedt M, Olsson JM: Regeneration of the antioxidant ubiquinol by lipoamide dehydrogenase, thioredoxin reductase and glutathione reductase. Biofactors. 2003;18(1-4):45-50. [PubMed:14695919 ]
  3. Oizumi J, Hayakawa K: Liberation of lipoate by human serum lipoamidase from bovine heart pyruvate dehydrogenase. Biochem Biophys Res Commun. 1989 Jul 31;162(2):658-63. [PubMed:2502979 ]
  4. Nakai T, Nakagawa N, Maoka N, Masui R, Kuramitsu S, Kamiya N: Ligand-induced conformational changes and a reaction intermediate in branched-chain 2-oxo acid dehydrogenase (E1) from Thermus thermophilus HB8, as revealed by X-ray crystallography. J Mol Biol. 2004 Apr 2;337(4):1011-33. [PubMed:15033367 ]
  5. Wynn RM, Machius M, Chuang JL, Li J, Tomchick DR, Chuang DT: Roles of His291-alpha and His146-beta' in the reductive acylation reaction catalyzed by human branched-chain alpha-ketoacid dehydrogenase: refined phosphorylation loop structure in the active site. J Biol Chem. 2003 Oct 31;278(44):43402-10. Epub 2003 Aug 5. [PubMed:12902323 ]
  6. Panak KC, Ruiz OA, Giorgieri SA, Diaz LE: Direct determination of glutathione in human blood by micellar electrokinetic chromatography: simultaneous determination of lipoamide and lipoic acid. Electrophoresis. 1996 Oct;17(10):1613-6. [PubMed:8957191 ]

Enzymes

General function:
Involved in oxidoreductase activity, acting on the aldehyde or oxo group of donors, disulfide as acceptor
Specific function:
The pyruvate dehydrogenase complex catalyzes the overall conversion of pyruvate to acetyl-CoA and CO(2), and thereby links the glycolytic pathway to the tricarboxylic cycle.
Gene Name:
PDHA1
Uniprot ID:
P08559
Molecular weight:
43295.255
General function:
Involved in oxidoreductase activity
Specific function:
Lipoamide dehydrogenase is a component of the glycine cleavage system as well as of the alpha-ketoacid dehydrogenase complexes. Involved in the hyperactivation of spermatazoa during capacitation and in the spermatazoal acrosome reaction.
Gene Name:
DLD
Uniprot ID:
P09622
Molecular weight:
54176.91
Reactions
Dihydrolipoamide + NAD → Lipoamide + NADH + Hydrogen Iondetails
General function:
Involved in oxidoreductase activity, acting on the aldehyde or oxo group of donors, disulfide as acceptor
Specific function:
The branched-chain alpha-keto dehydrogenase complex catalyzes the overall conversion of alpha-keto acids to acyl-CoA and CO(2). It contains multiple copies of three enzymatic components: branched-chain alpha-keto acid decarboxylase (E1), lipoamide acyltransferase (E2) and lipoamide dehydrogenase (E3).
Gene Name:
BCKDHA
Uniprot ID:
P12694
Molecular weight:
50470.58
General function:
Involved in oxoglutarate dehydrogenase (succinyl-transferring) activity
Specific function:
The 2-oxoglutarate dehydrogenase complex catalyzes the overall conversion of 2-oxoglutarate to succinyl-CoA and CO(2). It contains multiple copies of three enzymatic components: 2-oxoglutarate dehydrogenase (E1), dihydrolipoamide succinyltransferase (E2) and lipoamide dehydrogenase (E3).
Gene Name:
OGDH
Uniprot ID:
Q02218
Molecular weight:
48179.59
General function:
Involved in lyase activity
Specific function:
The glycine cleavage system catalyzes the degradation of glycine. The P protein binds the alpha-amino group of glycine through its pyridoxal phosphate cofactor; CO(2) is released and the remaining methylamine moiety is then transferred to the lipoamide cofactor of the H protein.
Gene Name:
GLDC
Uniprot ID:
P23378
Molecular weight:
112728.805