Question 3 Which of the following helps the enzyme to confer substrate specificity in enzymes? H-bonds Electrostatic interactions Hydrophobic patches Sterics 1 pts
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Step 1: Substrate specificity is the ability of an enzyme to bind to a specific substrate and catalyze a specific reaction. Show more…
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Which of the following would be unlikely to contribute to the substrate specificity of an enzyme?a. A similar shape exists between a pocket on the surface of the enzyme and a functional group on the substrate. b. A hydrophobic group on the substrate interacts with several hydrophobic amino acids on the enzyme. c. The enzyme has the ability to change its configuration in response to the substrate binding. d. The enzyme has an allosteric regulatory site. e. A positive charge on the substrate is attracted to a negative charge in the active site of the enzyme.
Sri K.
The structure of the substrate usually does not change. The substrate may undergo catalysis to form a product. The substrate can form hydrogen bonds, ionic bonds, and Van der Waals interactions with the enzyme. Binding to the active site changes the conformation of substrate to resemble the transition state. 19. Proteins evolved a relatively small number (10^3) of shapes (or folds, or topologies) to accommodate a relatively large (10^5) number of functions. Which of the following statements supports this hypothesis? Every protein with a unique function has a unique shape. Protein sequences must be almost identical to share the same shape. Amino acids that form the active site in homologous enzymes are conserved. All protein structures look the same. 20. Identify the following polypeptide:
Adi S.
What determines the specificity of chymotrypsin? a. conformational change upon binding of the substrate b. interaction of the active site amino acids with the cofactor c. covalent binding of a His residue to the substrate d. binding of the proper amino acid into a deep hydrophobic pocket on the enzyme e. binding of the N-terminus amino acid at the active site
Shaiju T.
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