Oxalosuccinic acid

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Oxalosuccinic acid
Oxalbernsteinsäure.png
Names
IUPAC name
1-Oxopropane-1,2,3-tricarboxylic acid
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.230.021
KEGG
Properties
C6H6O7
Molar mass 190.108
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Oxalosuccinic acid is a substrate of the citric acid cycle. It is acted upon by isocitrate dehydrogenase. Salts and esters of oxalosuccinic acid are known as oxalosuccinates.

Oxalosuccinic acid/oxalosuccinate is an unstable 6-carbon intermediate in the tricarboxylic acid cycle. It's an alpha-keto compound, formed during the oxidative decarboxylation of isocitrate to alpha-ketoglutarate, which is catalyzed by the enzyme isocitrate dehydrogenase. Oxalosuccinate never leaves the active site of the enzyme, however; it's unstable and immediately undergoes decarboxylation to produce the 5-carbon compound, alpha-ketoglutarate.