Proteose
A proteose is any of various water-soluble compounds that are produced during digestion by the hydrolytic breakdown of proteins short of the amino acid stage. It forms after breaking down of polypeptides by gastric pepsin. In addition to proteoses, peptones are also formed at this stage. Peptones are different from proteoses in that peptones are precipitated from solution by saturation with ammonium sulfate, while proteoses are not.
The proenzyme Pepsinogen,on the exposure to hydrochloric acid gets converted into the active enzyme pepsin, the proteolytic enzyme of the stomach. HCl provides the acidic pH optimal for pepsins.
Rennin is a proteolytic enzyme found in gastric juice of infants which helps in the digestion of milk proteins.
