<P> Pepsin is an endopeptidase that breaks down proteins into smaller peptides ( that is , a protease ) . It is produced in the stomach and is one of the main digestive enzymes in the digestive systems of humans and many other animals , where it helps digest the proteins in food . Pepsin has a three - dimensional structure , of which one or more polypeptide chains twist and fold , bringing together a small number of amino acids to form the active site , or the location on the enzyme where the substrate binds and the reaction takes place . Pepsin is an aspartic protease , using a catalytic aspartate in its active site . </P>
<P> Pepsin is an endopeptidase that breaks down proteins into smaller peptides ( that is , a protease ) . It is produced in the stomach and is one of the main digestive enzymes in the digestive systems of humans and many other animals , where it helps digest the proteins in food . Pepsin has a three - dimensional structure , of which one or more polypeptide chains twist and fold , bringing together a small number of amino acids to form the active site , or the location on the enzyme where the substrate binds and the reaction takes place . Pepsin is an aspartic protease , using a catalytic aspartate in its active site . </P>
where do you find pepsin in the body
where do you find pepsin in the body
the stomach
the stomach