Which of the following is NOT correct regarding the protein degradation process involving ubiquitin? A)The modified protein is degraded by an ATP-dependent protease complex. B)The ubiquitin binding to the protein to be degraded leads to a novel branched protein. C)The ubiquitin is covalently attached to a cysteine residue in the protein to be degraded. D)Three additional proteins (E₁,E₂,and E₃)are involved in the ligation of ubiquitin to the protein.

Question

Quizplus · Accepted Answer

Ubiquitin is typically attached to lysine residues on the target protein, not cysteine residues. This process marks the protein for degradation by the proteasome.

Which of the Following Is NOT Correct Regarding the Protein