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Succinate Dehydonate Lab Report

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Hypothesis: We hypothesize that reagent Malonate will inhibit Succinate Dehydrogenase (SDH) activity. Background: Malonate, also known as propanedioate, is a classic example of a competitive inhibitor. Malonate has a molecular structure that is similar to succinate, so it has the ability to bind to the active site of succinate dehydrogenase and inhibit enzyme activity. However, malonate is sufficiently different from succinate that it cannot be dehydrogenated. [1] Malonate working as an inhibitor to succinate oxidation is a popular occurrence. Succinate is oxidized to fumarate during the Kreb cycle and the reagent’s (malonate) inhibitory effect slows or halts that important step from taking place.[2] A competitive inhibitor had a similar molecular …show more content…

Malonate has been shown to cause dose-dependent neurotoxicity both ‘in vivo' and ‘in vitro' by inhibition of succinate dehydrogenase and depletion of striatal ATP [5]resulting in neuronal depolarization and secondary excitotoxicity [5]. In a recent study by [5], it was suggested that malonate toxicity involves neurons dying not only by secondary excitotoxicity but also by delayed caspase activation and apoptosis[5]. Thus, the exact mechanism by which malonate induced toxicity remains …show more content…

"MALONATE INHIBITION OF OXIDATIONS IN THE KREBS TRICARBOXYLIC ACID CYCLE." Jurimetrics Journal 10.2 (1969): 73-77.The Journal Of Biological Chemistry. AFFINITY SITES, 1949. Web. 8 Oct. 2014. . [3] "Biomolecules:Enzymes." Competitive Inhibition. Chempages Netorials, n.d. Web. 06 Oct. 2014.. [4]"Inhibitors." Chemistry Explained. Foundations and Applications, n.d.Web. 10 Oct. 2014. . [5]Fernandez-Gomez, Francisco J., Maria F. Galindo, Maria Gómez-Lázaro, Victor J. Yuste, Joan X. Comella, Norberto Aguirre, and Joaquín Jordán. "Abstract." National Center for Biotechnology Information. U.S. National Library of Medicine, 17 Jan. 2005. Web. 08 Oct. 2014. . [6]Fernandez-Gomez, Francisco J., Maria F. Galindo, Maria Gómez-Lázaro, Victor J. Yuste, Joan X. Comella, Norberto Aguirre, and Joaquín Jordán. "Abstract." National Center for Biotechnology Information. U.S. National Library of Medicine, 17 Jan. 2005. Web. 08 Oct. 2014.

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