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Question 22.3: ATP and Energy The reaction of glutamate (Glu) with ammonia ......

ATP and Energy

The reaction of glutamate (Glu) with ammonia (NH3) produces the amino acid glutamine (Gln). The reaction requires 3.4 kcal/mole.
a. Is the formation of glutamine a catabolic or an anabolic reaction?
b. Write the equation for the formation of glutamine (Gln), including the energy.
c. Write the equation for the hydrolysis of ATP, including the energy.
d. Write the overall equation for the combined reactions, including the net energy change.

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a. anabolic

b. Glu + NH _3+3.4\text{ kcal/mole }\longrightarrow Gln

c. ATP \longrightarrow ADP + P _{ i }+7.3\text{ kcal/mole}

d. Glu + NH _3+ ATP \longrightarrow Gln + ADP + P _{ i }+3.9\text{ kcal/mole}

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