Peptidases are catalytically active proteins (enzymes) that cleave peptide bonds in proteins and peptides by hydrolysis. Not only do peptidases break down proteins and peptides so that the amino acids can be recycled and used during growth and remodelling, but they are also important for modifying proteins.

What does peptidase break protein into?

Proteolytic enzyme, also called protease, proteinase, or peptidase, any of a group of enzymes that break the long chainlike molecules of proteins into shorter fragments (peptides) and eventually into their components, amino acids.

Who breaks down protein?

Protein digestion begins when you first start chewing. There are two enzymes in your saliva called amylase and lipase. They mostly break down carbohydrates and fats. Once a protein source reaches your stomach, hydrochloric acid and enzymes called proteases break it down into smaller chains of amino acids.