Enzymes and acidic juices in the stomach, which break proteins down into smaller molecules, is know as

Enzymes and acidic juices in the stomach, which break proteins down into smaller molecules, is known as proteolytic enzyme.

Proteolytic enzyme (also known as protease) is any group of enzymes that break down the long chainlike proteins molecules into smaller molecules (peptides) and later into amino acids. In the stomach, protein digestion takes place. The three main proteolytic enzymes; pepsin (produced by the stomach), and trypsin and chymotrypsin (produced by the pancreas) breaks down proteins into polypeptides which are eventually broken down into amino acids by several exopeptidases and dipeptidases.