What is the primary role 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 catalyzing the cis-trans isomerization of proline residues ✓
C To synthesize new peptide bonds
D To degrade damaged proteins

Explanation

Peptidyl-Prolyl Cis-Trans Isomerase plays a crucial role in protein folding by facilitating the cis-trans 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