Which of the following types of post-translational modification involves the addition of a ubiquitin protein to a lysine residue on a target protein?

A Phosphorylation
B Ubiquitination ✓
C Acetylation
D Glycosylation

Explanation

Ubiquitination is a type of post-translational modification that involves the covalent attachment of a ubiquitin protein to a lysine residue on a target protein, which can mark the protein for degradation or alter its activity.

Mnemonic

'Ubi' = Ubiquitin → 'ubiquitous' mark on proteins

Source

Kumar et al., Biochemistry
Protein Metabolism Biochemistry Post-Translational Modification Hard MEDICAL Confidence: high