Question: One step in the urea cycle for ridding the body of ammonia is the conversion of arginino succinate to the amino acid arginine plus fumarate.

One step in the urea cycle for ridding the body of ammonia is the conversion of arginino succinate to the amino acid arginine plus fumarate. Propose a mechanism for the reaction, and show the structure ofarginine.

NH2 H CO2 CO "02C. .co :Base Arginine "02C 'N' H NH3

NH2 H CO2 CO "02C. .co :Base Arginine "02C 'N' H NH3 Argininosuccinate Fumarate

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