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 catalyzing the cis-trans isomerization of peptidyl-prolyl bonds ✓
C To synthesize new peptide bonds
D To degrade proteins into amino acids

Explanation

Peptidyl-Prolyl Cis/Trans Isomerase plays a crucial role in protein folding by facilitating the cis-trans isomerization of peptidyl-prolyl bonds, which helps in the proper folding of proteins.

Source

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