A peptide sequence contains a proline residue. How does this affect the cleavage by peptidases?

• A. Proline inhibits the cleavage of peptide bonds.
• B. Proline enhances the cleavage of peptide bonds.
• C. Proline has no effect on peptide bond cleavage.
• D. Proline changes the specificity of peptidases.

Answer: (A)