How Many ATP Molecules Must Be Hydrolyzed by the Proteasome

question 38

Multiple Choice

How many ATP molecules must be hydrolyzed by the proteasome for the digestion of a protein that has been tagged for degradation with a polyubiquitin chain?

• A) None; the digestion does not require ATP hydrolysis and is exergonic
• B) One
• C) Two
• D) Ten
• E) Many; the number depends on the specific protein

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