Question

how are proteins digested ?

Answer 1

Amino acids can be used by your body to form important cellular structures, such as enzymes, antibodies, hormones, muscle proteins, and collagen. Protein digestion begins with the action of an enzyme called pepsin. Pepsin is the active protein-digesting enzyme of the stomach.

Answer 2

Digestion Of Proteins:

● In Stomach:

》One of the gland of stomach called peptic or chief cells secretes the proenzyme pepsinogen.

》The proenzyme pepsinogen gets converted into pepsin which turns into the activated form on exposure to HCl released by the parietal or oxyntic cells.

》Pepsin then converts proteins into proteoses and peptones.

● In Small Intestine-

》The pancreatic juice secteted here contains trypsinogen, chymotrypsinogen, procarboxypeptidases, amylases, lipases and nucleases.

》Enterokinase activates trypsin which in turn activates other enzymes.

》The proteins, proteoses, peptones which were partially hydrolysed in stomach reaches the intestine.

》Trypsin, Chemotrypsin, Carboxypeptidase acts upon them and converts into dipeptides.

》Dipeptides are then broked into amino acids by dipeptidases present in the intestinal juice.