Which Statement Is FALSE Regarding the Proposed Mechanism for Glutamine

question 5

Multiple Choice

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."

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