Which of the following amino acids in a protein targeted for destruction is most commonly the receptor for ubiquitin?
A)Ser
B)Lys
C)Asn
D)Tyr

Question

Quizplus · Accepted Answer

Lysine (Lys) is the most commonly targeted amino acid for ubiquitination, which is the process of attaching ubiquitin molecules to a protein to target it for degradation. Serine (Ser), asparagine (Asn), and tyrosine (Tyr) can also be ubiquitinated, but they are less frequently targeted compared to Lys.

Which of the Following Amino Acids in a Protein Targeted