Protease

Proteases are enzymes that break down  proteins  by hydrolyzing the  peptide bonds  between  amino acids. According to the place of action in the peptide chain, proteases are divided into:


 * endoproteases – cleaves a protein molecule inside its chain (e.g. trypsin, chymotrypsin, pepsin),
 * exoproteases – cleaves amino acids from the end of the peptide chain (e.g. carboxypeptidase).

Source

 * ŠVÍGLEROVA, Jitka.  Protease  [online].   Last revision 2/18/2009, [cit.   11/12/2010].   