Citramalic acid explained
Citramalic acid is the organic compound with the formula HO2CCH2C(CH3)(OH)CO2H. A chiral compound, it is related structurally to malic acid.
Synthesis and reactions
Citramalic acid is the hydrated derivative of mesaconic acid, The hydration is catalyzed by mesaconyl-C4-CoA hydratase:
HO2CCH=C(CH3)CO2H + H2O → HO2CCH2C(CH3)(OH)CO2HThe same conversion can be achieved in vitro.[1]
The enzyme (S)-citramalyl-CoA lyase converts citramalyl-CoA to acetyl-CoA and pyruvate.[2]
References
- 10.1016/S0040-4020(01)85678-7. Preparation of Both Enantiomers of Malic and Ctramalic Acid and Other Hydroxysuccinic Acid Derivatives by Stereospecific Hydrations of cis or trans 2-Butene-1,4-dioic Acids with Resting Cells of Clostridium formicoaceticum. 1994. Eck. Richard. Simon. Helmut. Tetrahedron. 50. 48. 13641–13654.
- 10.1128/AEM.02473-10. Ecological Aspects of the Distribution of Different Autotrophic CO2 Fixation Pathways. 2011. Berg. Ivan A.. Applied and Environmental Microbiology. 77. 6. 1925–1936. 21216907. 3067309. 2011ApEnM..77.1925B.