Isocitric acid

Isocitric acid is a structural isomer of citric acid. 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
Names
IUPAC name
1-Hydroxypropane-1,2,3-tricarboxylic acid
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
DrugBank
ECHA InfoCard 100.005.713
KEGG
MeSH Isocitrate
UNII
Properties
C6H8O7
Molar mass 192.124
Melting point 105 °C (221 °F; 378 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YN ?)
Infobox references

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.[1]

Interactive pathway map

Click on genes, proteins and metabolites below to link to respective articles. [§ 1]

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|{{{bSize}}}px|alt=TCACycle_WP78 edit]]
TCACycle_WP78 edit
  1. The interactive pathway map can be edited at WikiPathways: "TCACycle_WP78".

See also

References

  1. Saavedra, L.; Garcia, A.; Barbas, C. (9 June 2000). "Development and validation of a capillary electrophoresis method for direct measurement of isocitric, citric, tartaric and malic acids as adulteration markers in orange juice". Journal of Chromatography A. 881 (1–2): 395–401. doi:10.1016/s0021-9673(00)00258-2. PMID 10905722.
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