Which of the following methods is not used by cells to regulate the amount of a

Question

Which of the following methods is not used by cells to regulate the amount of a protein in the cell?

1. The protein stoppers that surround the central cylinder of the proteasome use the energy from ATP hydrolysis to move proteins into the proteasome inner chamber

2. Proteases reside in the central cylinder of a proteasome

3. Ubiquitin is a small protein that is covalently attached to proteins to mark them for delivery to the proteasome

4. Misfolded proteins are delivered to the proteasome, where they are sequestered from the cytoplasm and can attempt to refold

Explanation / Answer

4. Misfolded proteins are delivered to the proteasome, where they are sequestered from the cytoplasm and can attempt to refold

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