Good question, but once you think about it, the answer is quite simple. Protease needs to grab on to something (a protein) in order to digest it. It cannot grab onto itself. More specifically, proteases are designed to recognise specific proteins or protein sequences which they bind to and then cut or break up the protein at. The protease cannot turn around on itself in order to catalyse this reaction.
This answer isn't quite correct. In your answer you act as if there is only one pepsin molecule. If that was the case then indeed pepsin cannot 'grab onto itself'. However the question should have been : why doesn't pepsin digest other pepsin molecules. To find the answer to that you would have to look closer into what kind of atoms the molecules are made of and why they do not 'react' with eachother.
helps digest proteins
protease will digest protein
No, there is a great difference between lipaseand protease. lipase: digest fats and oils into glycerol and fatty acids. protease: digest protein into amino acids.
Protein wouldn't digest.
Proteases are enzyme that digest proteins. In stomach we have proteases such as trypsin, pepsin and chymotrypsin that digest proteins. In addition there are peptidases that digest the peptides to simple amino acids.
It depends on the protease, but as with all enzymes, the substrate binds to the active site.
It doesnt digest as such it is the bi product of digestion
It is an enzyme that is produced in the stomach and used to digest proteins to polypeptides. It works best in acidic conditions
No, proteases digest proteins, producing protein fragments. The smallest fragment of a protein is an amino acid, the monomers from which the polymers we call proteins are built.
An enzyme called a protease would digest proteins. Examples would be pepsin and trypsin.
* Trypsin (a serine protease) is used in baby food to pre-digest it. It can break down the protein molecules which helps the baby to digest it as its stomach is not strong enough to digest bigger protein molecules. See the Related Link.
It's not rennin... christ. Lactase is needed to digest the Lactose, Protease is needed to digest the casein and whey protein and Lipase is needed to digest the fats (lipids) in the milk.