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

2.Proteases reside in the central cylinder of a proteasome.

3.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.

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

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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