Which of the following is a function of proteasomes?
A) They ubiquitinate a misfolded protein and lead to its degradation.
B) They methylate a misfolded protein and lead to its degradation.
C) They activate a chaperone for the proper folding of a protein.
D) They activate tRNA molecules by adding methionine residues to their 3' termini.

Question

Quizplus · Accepted Answer

Proteasomes are responsible for degrading misfolded or damaged proteins that have been targeted for destruction by ubiquitination. Ubiquitin molecules are added to the protein, marking it for degradation by the proteasome.

Which of the Following Is a Function of Proteasomes