20 min! please !
Posted: Mon May 16, 2022 9:22 pm
20 min! please !
Problem 2 Hydrolysis of proteins begins in the stomach, catalyzed by the hydrochloric acid secreted into the stomach by parietal cells. (a) How does the low pH of the stomach affect protein structure in such a way that the proteins are prepared for hydrolytic digestion? The hydrolysis of peptide bonds in the stomach is catalyzed by both hydrochloric acid and the gastric protease pepsin. Peptide bond hydrolysis continues in the small intestine, catalyzed by the pancreatic enzymes trypsin and chymotrypsin. (b) At what pH does pepsin function optimally; that is, at what pH is the Vmax for pepsin greatest? (c) Is the pH optimum for pepsin different from that for trypsin and chymotrypsin? Explain.
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