CHEBI:30887 - isocitric acid

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ChEBI Name isocitric acid
ChEBI ID CHEBI:30887
Definition A tricarboxylic acid that is propan-1-ol with a hydrogen at each of the 3 carbon positions replaced by a carboxy group.
Stars This entity has been manually annotated by the ChEBI Team.
Secondary ChEBI IDs CHEBI:5998, CHEBI:24886
Supplier Information No supplier information found for this compound.
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Isocitric acid is a structural isomer of citric acid. Since citric acid and isocitric acid are structural isomers, they share similar physical and chemical properties. Due to these similar properties, it is difficult to separate the isomers. Salts and esters of isocitric acid are known as isocitrates. The isocitrate anion is a substrate of the citric acid cycle. Isocitrate is formed from citrate with the help of the enzyme aconitase, and is acted upon by isocitrate dehydrogenase. Isocitric acid is commonly used as a marker to detect the authenticity and quality of fruit products, most often citrus juices. In authentic orange juice, for example, the ratio of citric acid to D-isocitric acid is usually less than 130. An isocitric acid value higher than this may be indicative of fruit juice adulteration. Isocitric acid has largely been used as a biochemical agent due to limited amounts. However, isocitric acid has been shown to have pharmaceutical and therapeutic effects. Isocitric acid has been shown to effectively treat iron deficient anemia. Additionally, isocitric acid could be used to treat Parkinson's disease. Yarrowia lipolytica can be used to produce isocitric acid and is inexpensive compared to other methods. Furthermore, other methods produce unequal amounts of citric acid to isocitric acid ratio, mostly producing citric acid. Use of Yarrowia lipolytica produces a better yield, making equal amounts of citric acid to isocitric acid.
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Formula C6H8O7
Net Charge 0
Average Mass 192.12352
Monoisotopic Mass 192.02700
InChI InChI=1S/C6H8O7/c7-3(8)1-2(5(10)11)4(9)6(12)13/h2,4,9H,1H2,(H,7,8)(H,10,11)(H,12,13)
InChIKey ODBLHEXUDAPZAU-UHFFFAOYSA-N
SMILES OC(C(CC(O)=O)C(O)=O)C(O)=O
Metabolite of Species Details
Chlamydomonas reinhardtii (NCBI:txid3055) See: PubMed
Roles Classification
Chemical Role(s): Bronsted acid
A molecular entity capable of donating a hydron to an acceptor (Bronsted base).
(via oxoacid )
Biological Role(s): fundamental metabolite
Any metabolite produced by all living cells.
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ChEBI Ontology
Outgoing isocitric acid (CHEBI:30887) has role fundamental metabolite (CHEBI:78675)
isocitric acid (CHEBI:30887) is a secondary alcohol (CHEBI:35681)
isocitric acid (CHEBI:30887) is a tricarboxylic acid (CHEBI:27093)
isocitric acid (CHEBI:30887) is conjugate acid of isocitrate(1−) (CHEBI:36454)
Incoming 2-caffeoylisocitric acid (CHEBI:16166) has functional parent isocitric acid (CHEBI:30887)
methylisocitric acid (CHEBI:25311) has functional parent isocitric acid (CHEBI:30887)
D-erythro-isocitric acid (CHEBI:160) is a isocitric acid (CHEBI:30887)
D-threo-isocitric acid (CHEBI:151) is a isocitric acid (CHEBI:30887)
L-erythro-isocitric acid (CHEBI:43291) is a isocitric acid (CHEBI:30887)
L-threo-isocitric acid (CHEBI:30889) is a isocitric acid (CHEBI:30887)
isocitrate(1−) (CHEBI:36454) is conjugate base of isocitric acid (CHEBI:30887)
IUPAC Names
1-hydroxypropane-1,2,3-tricarboxylic acid
3-carboxy-2,3-dideoxypentaric acid
Synonyms Sources
1-Hydroxypropane-1,2,3-tricarboxylic acid KEGG COMPOUND
1-Hydroxytricarballylic acid KEGG COMPOUND
Isocitric acid KEGG COMPOUND
Manual Xrefs Databases
C00001188 KNApSAcK
C00311 KEGG COMPOUND
DB01727 DrugBank
ECMDB04088 ECMDB
HMDB0000193 HMDB
Isocitrate MetaCyc
Isocitric_acid Wikipedia
YMDB00026 YMDB
View more database links
Registry Numbers Types Sources
1727945 Reaxys Registry Number Reaxys
320-77-4 CAS Registry Number KEGG COMPOUND
320-77-4 CAS Registry Number ChemIDplus
Citations Waiting for Citations
Last Modified
08 November 2018