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Unformatted text preview: p Glutamate and glutamine are major –NH2 donors
through transaminases e.g., Glu +OAA -KG + Asp how do oranisms get rid of nitrogen? it involves the Urea cycle.
Urea cycle is a set of rxn that allows nitrogen in two forms, ammonia and aspartate, nitrogen can be removed using Urea Urea cycle: removal of excess N Pre-urea cycle: formation of carbamyl phosphate ATP Urea cycle:
Lose two amino-N
and a CO2
How much energy
does it take to
struct How many of the reactions that we have studied are represented in excretion
of excess nitrogen? Summary
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- Winter '08