In the stomach, food processing continues and secretions from stomach glands aid the initial digestion of Proteins
Proteins are large, complex molecules that play many critical roles in the body. They do most of the work in cells and are required for the structure, function, and regulation of the body's tissues and organs
Pepsin would be a stomach enzyme used to break down proteins in food that has been consumed. Pepsin is produced by the main cells of the stomach as pepsinogen, an inactive zymogen. The stomach's lining's parietal cells also secrete hydrochloric acid, which reduces the pH of the stomach. Pepsin is activated at a pH between 1.5 and 2.
Once a protein source enters the human stomach, it is broken down into smaller molecules called amino acids by the stomach's hydrochloric acid as well as proteases enzymes.
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