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Proteases are the enzymes that digest proteins and break them down into single amino acids or short chains of amino acids. Pepsin is an active protease present in our body (stomach) that shows its activity in low pH (ranges between pH 1.2 - 2). The precursor of...
Which one of the following enzymes facilitates the breakdown of complex carbohydrates into simple carbohydrates? a. Lipase b. Pancreatic amylase c. Salivary amylase d. PepsinWhich digestive organ stores and releases bile for lipid emulsification?Which of the following is not involved in chemical digest...
Structure of human uropepsin at 2.45 Å resolution The molecular structure of human uropepsin, an aspartic proteinase from the urine produced in the form of pepsinogen A in the gastric mucosa, has been dete... Fernanda,Canduri,Lívia,... - 《Acta Crystallographica》 被引量: 49发表: 20...
acid(HCl),pepsinogen changes its3D shape, such that a new groove forms in its tertiary structure. This new groove is a functional active site. Thus, the pepsinogen molecule is now called pepsin, to signify that it now has a folded shape that ...
This secretion creates a favorable medium for the conversion of pepsinogen to pepsin (an important enzyme in the protein digestion process), facilitating the absorption of iron, calcium and vitamin B12, as well as preventing bacterial overgrowth and possible infections [68]. Moreover, the parietal ...
Pepsin is a proteolytic enzyme released as a proenzyme pepsinogen by the main cells of the gastric glands. GastricHClacts as an activator. Pepsin's optimum pH is1.8, which is quite acidic.Because the carboxylic acid group on the amino acid in the enzyme's active site must be in its ...
pepsinogen c. pepsin Define emulsification. Identify the structure from the given description: It empties into the duodenum. The enzymes of the digestive system are classified as hydrolases. What does this mean? Briefly describe the layers of the digestive system. Describe the process of absorption ...
a) cholecystokinin (CCK) b) bile salt re-entry into the liver c) secretin d) vagus nerve Which of the following is NOT a function of the liver? A. produce pepsinogen B. store fat-soluble vitamins C. detoxify alcohol D. bile secretion...
What are the differences between pepsin, pepsinogen, zymogen, and pyloric sphincter? What do the bronchi do in the respiratory system? What does the larynx do in the respiratory system? What is the difference between cilia and microvilli? What is the function of tracheal c...