Enzymes for the breakdown of protein are present in the stomach.
What are the enzymes involved in the digestion of proteins in our body?
Pepsin
- In the presence of an acid, the stomach secretes pepsins, which are proteolytic enzymes.
- About 10–15% of the digestion of proteins is done by the pepsins.
Trypsin
- It is secreted in an inactive form, trypsinogen, by the pancreas.
- Trypsinogen is then activated in the small intestine by the enzyme enterokinase and further helps in protein digestion.
Chymotrypsin and elastase
- These are also secreted by the pancreas.
- Chymotrypsin and elastase are activated by trypsin.
- Responsible for initiating the hydrolysis of protein chains into peptides.
Carboxypeptidases
- The enzymatic action of carboxypeptidases, which are also released by the pancreas, causes the subsequent breakdown of the peptides into smaller molecules and then to individual amino acids.
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