Which of the following types of protein degradation is characterized by the tagging of proteins with ubiquitin molecules?

A Proteasomal degradation ✓
B Lysosomal degradation
C Autophagic degradation
D Exosomal degradation

Explanation

Proteasomal degradation involves the tagging of proteins with ubiquitin molecules, which targets them for degradation by the proteasome.

Source

Lodish et al., Molecular Cell Biology
Protein Metabolism Cell Biology Protein Degradation Easy MEDICAL Confidence: high