Which statement is FALSE regarding the proposed mechanism for glutamine amidotransferases?
A) Part of the mechanism includes the formation of a thioester to a cysteine.
B) A hydrolysis reaction releases glutamine from the active site.
C) Ammonia is released from one substrate before reacting with the second substrate.
D) Phosphorylation is often used to activate the substrate accepting the amino group.
E) Two portions of the enzymes are connected by an "ammonia channel."
Correct Answer:
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