There are many different types of peptidases, each with its own specificity for the type of peptide bond it can break. Some of the major peptidases involved in digestion include:

* Pepsin: Found in the stomach, pepsin breaks down large proteins into smaller peptides.

* Trypsin and Chymotrypsin: These enzymes are secreted by the pancreas and work in the small intestine. They further break down peptides into smaller units.

* Carboxypeptidases: These enzymes, also secreted by the pancreas, remove amino acids from the carboxyl end of peptides.

* Aminopeptidases: These enzymes, found in the small intestine, remove amino acids from the amino end of peptides.

These peptidases work together to break down peptides into individual amino acids, which can then be absorbed into the bloodstream and used by the body for various functions.