Enzymes The nucleophile in serine proteases is both (a) and (b) water Serine Asparagine both (a) and (b) water Serine Asparagine ANSWER DOWNLOAD EXAMIANS APP
Enzymes The E.coli pyruvic acid dehydrogenase complex is reported to Catalyze the reduction of pyruvic acid to acetyl Co A and CO2 Catalyze the oxidation of pyruvic acid to acetyl Co A and CO2 decatalyze the oxidation of pyruvic acid to acetyl Co A and CO2 retard the reduction of pyruvic acid to acetyl Co A and CO2 Catalyze the reduction of pyruvic acid to acetyl Co A and CO2 Catalyze the oxidation of pyruvic acid to acetyl Co A and CO2 decatalyze the oxidation of pyruvic acid to acetyl Co A and CO2 retard the reduction of pyruvic acid to acetyl Co A and CO2 ANSWER DOWNLOAD EXAMIANS APP
Enzymes The proteolysis rate enhancement by chymotrypsin (~1010 folds) corresponds to a reduction in activation energy of about 49 kJ/mol 88 kJ/mol 40 kJ/mol 58 kJ/mol 49 kJ/mol 88 kJ/mol 40 kJ/mol 58 kJ/mol ANSWER DOWNLOAD EXAMIANS APP
Enzymes The cleavage specificity of trypsin and chymotrypsin depend in part on the proximity of Ser 195 to the active site or specificity pocket size, shape, and charge of the active site or specificity pocket presence of a low-barrier hydrogen bond in the active site or specificity pocket absence of water in the active site proximity of Ser 195 to the active site or specificity pocket size, shape, and charge of the active site or specificity pocket presence of a low-barrier hydrogen bond in the active site or specificity pocket absence of water in the active site 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 will still be produced, but not B, C, or D A, B, C, and D will all still be produced A, B, and C will still be produced, but not D A and B will still be produced, but not C or D A will still be produced, but not B, C, or D A, B, C, and D will all still be produced A, B, and C will still be produced, but not D A and B will still be produced, but not C or D ANSWER DOWNLOAD EXAMIANS APP
Enzymes Which of the common features are shared between serine and aspartate proteases? All of these Both require water to complete the catalytic cycle Both use a base to activate the nucleophile Both show specificity for certain amino acid sequences All of these Both require water to complete the catalytic cycle Both use a base to activate the nucleophile Both show specificity for certain amino acid sequences ANSWER DOWNLOAD EXAMIANS APP
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