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
Enzymes The role of Asp 102 and His 57 during trypsin catalysis is to clamp the substrate into the active site keep the specificity pocket open neutralize the charge on the other's side chain function as a proton shuttle clamp the substrate into the active site keep the specificity pocket open neutralize the charge on the other's side chain function as a proton shuttle ANSWER DOWNLOAD EXAMIANS APP
Enzymes The E.coli pyruvic acid dehydrogenase complex is reported to retard the reduction of pyruvic acid to acetyl Co A and CO2 decatalyze the oxidation 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 retard the reduction of pyruvic acid to acetyl Co A and CO2 decatalyze the oxidation 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 ANSWER DOWNLOAD EXAMIANS APP
Enzymes Which of the following statements about enzymes or their function is true? All of these Enzymes do not alter the overall change in free energy for a reaction Enzymes speed up reactions by lowering activation energy Enzymes are proteins whose three-dimensional form is key to their function All of these Enzymes do not alter the overall change in free energy for a reaction Enzymes speed up reactions by lowering activation energy Enzymes are proteins whose three-dimensional form is key to their function ANSWER DOWNLOAD EXAMIANS APP
Enzymes Which of the following is false statement with regard to comparison between Serine and HIV proteases? Both show specificity for certain amino acid sequences Both forms an acyl-enzyme intermediate Both require water to complete the catalytic cycle Both use nucleophilic attack to hydrolyze the peptide bond Both show specificity for certain amino acid sequences Both forms an acyl-enzyme intermediate Both require water to complete the catalytic cycle Both use nucleophilic attack to hydrolyze the peptide bond 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 presence of a low-barrier hydrogen bond in the active site or specificity pocket proximity of Ser 195 to the active site or specificity pocket absence of water in the active site 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 proximity of Ser 195 to the active site or specificity pocket absence of water in the active site ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS