13521  Oxalomalic Acid (sodium salt)

(CAS 89304-26-7)



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Aconitase catalyzes the stereospecific isomerization of citrate to isocitrate in the first step of the citric acid cycle. It acts as an iron regulatory protein (IRP), controlling the translation of proteins involved in iron metabolism when iron is scarce and resumes aconitase activity when iron is abundant. Aconitase is now recognized as a regulator of iron-induced glutamate production.1 Oxalomalic acid, formed by the condensation of oxaloacetate with glyoxylate in vivo, inhibits both aconitase and NADP-dependent isocitrate dehydrogenase in the conversion of citrate to isocitrate at concentrations as low as 1 mM.2 At 5 mM, oxalomalic acid inhibition of aconitase leads to a decrease in the binding activity of IRP1 and a decrease in glutamate secretion in cultured lens epithelial cells, retinal pigment epithelial cells, and neurons.3,4
1  Gerber, D.E. EGFR inhibition in the treatment of non-small cell lung cancer. Drug Dev Res 69(6) 359-372 (2008).
2  Ruffo, A., Testa, E., Adinolfi, A., et al. Control of the citric acid cycle by glyoxylate. Mechanism of the inhibition by oxalomalate and γ-hydroxy-α-oxoglutarate. Biochem J 103 19-23 (1967).
3  Festa, M., Colonna, A., Pietropaolo, C., et al. Oxalomalate, a competitive inhibitor of aconitase, modulates the RNA-binding activity of iron-regulatory proteins. Biochem J 348 315-320 (2000).
4  McGahan, M.C., Harned, J., Mukunnemkeril, M., et al. Iron alters glutamate secretion by regulating cytosolic aconitase activity. Am J Physiol Cell Physiol 288 1117-1124 (2005).

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Size Price Quantity
1 mg €20.00
5 mg €86.00
10 mg €153.00
25 mg €334.00
Pricing updated 2010-03-12.
Prices are subject to change without notice.

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