Digestive tract hydrolases

Glycoside hydrolases (GHs) are widespread carbohydrate-specific enzymes involved in many processes in biological systems. In mammals, GHs are mostly extracellular, such as in saliva or digestive tract, and act to the degradation of glycans for nutritive or anti-bacterial needs. However, some of GHs are located in the Endoplasmic Reticulum or Golgi apparatus participating to post-translational processes. ... 

Dietary protein is the principal source of fixed nitrogen in higher animals. In digestion, proteins are hydrolyzed by a series of hydrolytic enzymes in the stomach and the small intestine to peptides and amino acids, which are absorbed from the lumen of the gastrointestinal tract. These enzymes are known collectively as proteolytic enzymes, or proteases, and belong to the class of enzymes called hydrolases (Chap. 8). 

---