What is the primary function of the enzyme Peptidyl-Prolyl Cis-Trans Isomerase in protein metabolism?

A To catalyze the hydrolysis of peptide bonds
B To facilitate the folding of proteins by isomerizing proline residues ✓
C To synthesize new peptide bonds
D To degrade damaged or misfolded proteins

Explanation

Peptidyl-Prolyl Cis-Trans Isomerase plays a crucial role in protein folding by facilitating the isomerization of proline residues, which helps in the correct folding of proteins.

Source

Alberts et al., Molecular Biology of the Cell
Protein Metabolism Biochemistry Protein Folding Medium MEDICAL Confidence: high