Record Information
Version1.0
StatusDetected and Quantified
Creation Date2022-04-29 22:45:50 UTC
Update Date2022-12-15 22:52:19 UTC
Metabolite IDMMDBc0049900
Metabolite Identification
Common Name(S)-Citramalate
DescriptionCitramalic acid, also known as 2-Methylmalic acid, is an analog of malic acid. The structure of citramalic acid is similar to the structure of malic acid except it has an extra CH3 group on position 2. It is also classified as a 2-hydroxydicarboxylic acid. Citramalic acid exists in two isomers, L-citramalic acid and D-citramalic acid. The L-isomer is more biologically relevant isomer. Citramalic acid is found in almost all living organisms from microbes to plants to humans although citramalate is primarily produced from bacteria. L-citramalic acid was first isolated from the peel of apples in 1954 (PMID: 13160011 ). It has also been isolated in wine and other ripening fruit (PMID: 13807713 ). Citramalic acid can inhibit the production of malic acid. Citramalic acid is also an important microbial metabolite and has been found to be a byproduct of Saccharomyces yeast species, as well as Propionibacterium acnes and Aspergillus niger (PMID: 31827810 ) (http://drweyrich.weyrich.com/labs/oat.html) (PMID: 7628083 ). Citramalic acid is a component of the C5-branched dibasic acid metabolism pathway. It can be broken down by the enzyme citramalate lyase, which converts citramalate to acetate and pyruvate. Citramalate synthase is an enzyme found in bacteria that synthesizes citramalic acid from acetyl-CoA, pyruvate and water. Citramalic acid may have a useful role in medical diagnoses. It has been found in the urine of two brothers with autistic features (PMID: 7628083 ). Citramalic acid can also be used as a urinary marker for gut dysbiosis (PMID: 31669633 ). Dysbiosis is a disorder of the bacterial flora of the human digestive tract. It is usually diagnosed clinically by direct detection of an abnormal pattern of the intestinal microbiota.
Structure
Synonyms
ValueSource
(+-)-2-Hydroxy-2-methylsuccinic acidChEBI
2-Hydroxy-2-methylbutanedioic acidChEBI
2-Hydroxy-2-methylsuccinic acidChEBI
2-Methylmalic acidChEBI
alpha-Hydroxypyrotartaric acidChEBI
Citramalic acidsChEBI
(+-)-2-Hydroxy-2-methylsuccinateGenerator
2-Hydroxy-2-methylbutanedioateGenerator
2-Hydroxy-2-methylsuccinateGenerator
2-MethylmalateGenerator
a-HydroxypyrotartarateGenerator
a-Hydroxypyrotartaric acidGenerator
alpha-HydroxypyrotartarateGenerator
Α-hydroxypyrotartarateGenerator
Α-hydroxypyrotartaric acidGenerator
CitramalateGenerator
(b)-2-MethylmalateHMDB
(b)-2-Methylmalic acidHMDB
(b)-CitramalateHMDB
(b)-Citramalic acidHMDB
(R,S)-(b)-CitramalateHMDB
(R,S)-(b)-Citramalic acidHMDB
(R,S)-b-MethylmalateHMDB
(R,S)-b-Methylmalic acidHMDB
(R,S)-beta-MethylmalateHMDB
(R,S)-beta-Methylmalic acidHMDB
2-Deoxy-3-C-methyltetrarateHMDB
2-Deoxy-3-C-methyltetraric acidHMDB
2-Hydroxy-2-methyl-(b)-butanedioateHMDB
2-Hydroxy-2-methyl-(b)-butanedioic acidHMDB
2-Hydroxy-2-methyl-butanedioateHMDB
2-Hydroxy-2-methyl-butanedioic acidHMDB
2-Methyl-(b)-malateHMDB
2-Methyl-(b)-malic acidHMDB
DL-CitramalateHMDB
DL-Citramalic acidHMDB
Citramalate, (+-)-isomerHMDB
Citramalate, (R)-isomerHMDB
Citramalate, (S)-isomerHMDB
alpha-MethylmalateHMDB
(R)-2-Hydroxy-2-methylbutanedioateHMDB
Citramalic acidKEGG
Molecular FormulaC5H8O5
Average Mass148.114
Monoisotopic Mass148.037173366
IUPAC Name2-hydroxy-2-methylbutanedioic acid
Traditional Namecitramalate, (+-)-
CAS Registry NumberNot Available
SMILES
CC(O)(CC(O)=O)C(O)=O
InChI Identifier
InChI=1S/C5H8O5/c1-5(10,4(8)9)2-3(6)7/h10H,2H2,1H3,(H,6,7)(H,8,9)
InChI KeyXFTRTWQBIOMVPK-UHFFFAOYSA-N