Enzymes Which of the following (s) is/are serine proteases? Trypsin Chymotrypsin Elastase all of these Trypsin Chymotrypsin Elastase all of these ANSWER DOWNLOAD EXAMIANS APP
Enzymes The proteolysis rate enhancement by chymotrypsin (~1010 folds) corresponds to a reduction in activation energy of about 40 kJ/mol 88 kJ/mol 58 kJ/mol 49 kJ/mol 40 kJ/mol 88 kJ/mol 58 kJ/mol 49 kJ/mol ANSWER DOWNLOAD EXAMIANS APP
Enzymes Which of the following is false statement with regard to comparison between Serine and HIV proteases? Both require water to complete the catalytic cycle Both show specificity for certain amino acid sequences Both use nucleophilic attack to hydrolyze the peptide bond Both forms an acyl-enzyme intermediate Both require water to complete the catalytic cycle Both show specificity for certain amino acid sequences Both use nucleophilic attack to hydrolyze the peptide bond Both forms an acyl-enzyme intermediate ANSWER DOWNLOAD EXAMIANS APP
Enzymes The cleavage specificity of trypsin and chymotrypsin depend in part on the size, shape, and charge of the active site or specificity pocket absence of water in the active site proximity of Ser 195 to the active site or specificity pocket presence of a low-barrier hydrogen bond in the active site or specificity pocket size, shape, and charge of the active site or specificity pocket absence of water in the active site proximity of Ser 195 to the active site or specificity pocket presence of a low-barrier hydrogen bond in the active site or specificity pocket ANSWER DOWNLOAD EXAMIANS APP
Enzymes In the enzyme-catalyzed reaction shown below, what will be the effect on substances A, B, C, and D of inactivating the enzyme labeled E2? A ---(E1)---> B ---(E2)---> C ---(E3)---> A, B, C, and D will all still be produced A and B will still be produced, but not C or D A, B, and C will still be produced, but not D A will still be produced, but not B, C, or D A, B, C, and D will all still be produced A and B will still be produced, but not C or D A, B, and C will still be produced, but not D A will still be produced, but not B, C, or D ANSWER DOWNLOAD EXAMIANS APP
Enzymes The role of Asp 102 and His 57 during trypsin catalysis is to keep the specificity pocket open clamp the substrate into the active site neutralize the charge on the other's side chain function as a proton shuttle keep the specificity pocket open clamp the substrate into the active site neutralize the charge on the other's side chain function as a proton shuttle ANSWER DOWNLOAD EXAMIANS APP
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