 
<translate> Ina da wata tambaya a gare ku: Pepsin wani endopeptidase ne wanda ke rushe sunadarai zuwa kananan peptides (wato, protease). Ana samar da shi a cikin ciki kuma yana ɗaya daga cikin manyan enzymes na narkewa a cikin tsarin narkewa na mutane da sauran dabbobi da yawa, inda yake taimakawa narkar da sunadarai a cikin abinci. Pepsin yana da tsari mai girma uku, wanda ɗayan ko fiye da sarƙoƙin polypeptide ke juyawa da ninkawa, yana haɗuwa da ƙananan adadin amino acid don samar da wurin aiki, ko kuma wurin a kan enzyme inda substrate ya ɗaure kuma aikin ya faru. Pepsin shine aspartic protease, ta amfani da catalytic aspartate a cikin wurin aiki.  Amsa wannan tambayar: a ina ne ake fitar da pepsin a cikin tsarin narkewa? Bari mu fara tunani: <eng> I got a question for you: 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.

Answer this question: where is pepsin secreted in the digestive system?
Let's think first: 