Classification Term: 169264

Beta-keto acids (ontology term: c06a09e75479dae59f2187d7bcf70ebb)

found 11 associated metabolites at sub_class metabolite taxonomy ontology rank level.

Ancestor: Beta-keto acids

Child Taxonomies: There is no child term of current ontology term.

Ethyl 3-oxohexanoate

Hexanoic acid, 3-oxo-, ethyl ester

C8H14O3 (158.0942894)


Ethyl 3-oxohexanoate is a flavouring agent Flavouring agent

   

2-Isopropyl-3-oxosuccinate

(2S)-2-(1-Methylethyl)-3-oxobutanedioic acid

C7H10O5 (174.052821)


2-Isopropyl-3-oxosuccinate belongs to the class of organic compounds known as short-chain keto acids and derivatives. These are keto acids with an alkyl chain that contains less than 6 carbon atoms. 2-Isopropyl-3-oxosuccinate is an extremely weak basic (essentially neutral) compound (based on its pKa). 2-Isopropyl-3-oxosuccinate exists in all living species, ranging from bacteria to humans. 2-Isopropyl-3-oxosuccinate has been detected, but not quantified in, several different foods, such as garden onion (var.), German camomiles, limes, cloud ear fungus, and citrus. This could make 2-isopropyl-3-oxosuccinate a potential biomarker for the consumption of these foods. 2-Isopropyl-3-oxosuccinate is an intermediate in leucine biosynthesis and can be generated from (2R,3S)-3-isopropylmalate. It is the third step in leucine biosynthesis after the fork from valine synthesis. It is an oxidative decarboxylation. Leucine biosynthesis involves a five-step conversion process starting with the valine precursor 2-keto-isovalerate. The final step in this pathway is catalyzed by two transaminases of broad specificity: branched-chain amino acid transferase (IlvE) and tyrosine aminotransferase (TyrB). In this pathway, 2-isopropyl-3-oxosuccinate is converted into 4-methyl-2-oxopentanoate via a spontaneous reaction (BioCyc).

   

Methylacetoacetic acid

3-oxo-Butanoic acid methyl ester

C5H8O3 (116.0473418)


Methylacetoacetic acid, also known as 3-oxo-butanoate or methyl acetylacetate, belongs to the class of organic compounds known as beta-keto acids and derivatives. These are organic compounds containing an aldehyde substituted with a keto group on the C3 carbon atom. Methylacetoacetic acid is an extremely weak basic (essentially neutral) compound (based on its pKa). Methylacetoacetic acid is a citrus, fresh, and fruity tasting compound. Methylacetoacetic acid has been identified in the urine of patients with an inherited deficiency of propionyl-CoA carboxylase (PMID 630060), and after isoleucine loading in the diagnosis of 2-methylacetoacetyl-CoA thiolase deficiency. Methylacetoacetic acid has been identified in the urine of patients with an inherited deficiency of propionyl-CoA carboxylase (PMID 630060), and after isoleucine loading in the diagnosis of 2-methylacetoacetyl-CoA thiolase deficiency. (PMID 1861461) [HMDB] Methyl acetylacetate is an endogenous metabolite. Methyl acetylacetate is an endogenous metabolite.

   

3-Dehydrocarnitine

3-Carboxy-N,N,N-trimethyl-2-oxo-1-propanaminium

C7H13NO3 (159.0895388)


3-Dehydrocarnitine is a member of the carnitine family that is an intermediate in carnitine degradation. It can be formed from either D-carnitine or L-carnitine and the enzyme responsible for this oxidation reaction is (S)-carnitine 3-dehydrogenase (EC 1.1.1.254) or Carnitine 3-dehydrogenase (EC 1.1.1.108) respectively. Carnitine is a quaternary ammonium compound biosynthesized from the amino acids lysine and methionine. In living cells, it is required for the transport of fatty acids from the cytosol into the mitochondria during the breakdown of lipids (or fats) for the generation of metabolic energy. [HMDB] 3-Dehydrocarnitine is a member of the carnitine family that is an intermediate in carnitine degradation. It can be formed from either D-carnitine or L-carnitine and the enzyme responsible for this oxidation reaction is (S)-carnitine 3-dehydrogenase (EC 1.1.1.254) or carnitine 3-dehydrogenase (EC 1.1.1.108), respectively. Carnitine is a quaternary ammonium compound biosynthesized from the amino acids lysine and methionine. In living cells, it is required for the transport of fatty acids from the cytosol into the mitochondria during the breakdown of lipids (or fats) for the generation of metabolic energy.

   

3-Dehydrocarnitine

3-Dehydrocarnitine

C7H13NO3 (159.0895388)


An ammonium betaine that is the conjugate base of 3-dehydrocarnitinium; major species at pH 7.3.

   

Ethyl 3-oxohexanoate

Ethyl 3-oxohexanoate

C8H14O3 (158.0942894)


   

Maleylacetic acid

Maleylacetic acid

C6H6O5 (158.0215226)


A 4-oxohex-2-enedioic acid with a Z-configuration.

   
   
   
   

Isopropyloxosuccinate

Isopropyloxosuccinate

C7H10O5 (174.052821)