Which of the following methods is not used by cells to regulate the amount of a
ID: 65731 • Letter: W
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