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A diroximel ester of this compound is used to treat relapsing forms of multiple sclerosis. For 10 points each:
[10m] Name this compound. In the citric acid cycle, this compound is formed by the dehydration of succinate.
ANSWER: fumarate [or fumaric acid]
[10e] Fumarate is also released as a side product in the production of arginine in this cycle, which is then turned into ornithine in its last step. This cycle produces a namesake nitrogenous waste compound that is excreted from the body.
ANSWER: urea cycle
[10h] The conversion of fumarate to malate in the cytosol forms part of these reactions that are named after two intermediates in the urea cycle. This series of reactions connect the urea cycle and the citric acid cycle through its namesake synthetase, which forms a “shunt”.
ANSWER: aspartate-argininosuccinate shunt (The two interconnected cycles are sometimes called the “Krebs bicycle.”)
<Science - Chemistry>

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