Which of the following types of protein modifications is involved in the regulation of protein degradation through the ubiquitin-proteasome pathway?

A Phosphorylation
B Ubiquitination ✓
C Acetylation
D Glycosylation

Explanation

Ubiquitination is a post-translational modification that involves the covalent attachment of ubiquitin molecules to lysine residues on target proteins, marking them for degradation by the proteasome.

Source

Kirschner et al., The Ubiquitin-Proteasome Pathway
Protein Metabolism Biochemistry Protein Degradation Hard MEDICAL Confidence: high