Enzymes Common feature in all serine proteases is a hydrophobic specificity pocket cluster of reactive serine residues single reactive serine residue hydrophilic specificity pocket hydrophobic specificity pocket cluster of reactive serine residues single reactive serine residue hydrophilic specificity pocket ANSWER DOWNLOAD EXAMIANS APP
Enzymes The role of Asp 102 and His 57 during trypsin catalysis is to function as a proton shuttle neutralize the charge on the other's side chain clamp the substrate into the active site keep the specificity pocket open function as a proton shuttle neutralize the charge on the other's side chain clamp the substrate into the active site keep the specificity pocket open ANSWER DOWNLOAD EXAMIANS APP
Enzymes Which of the following (s) is/are serine proteases? Elastase Trypsin Chymotrypsin all of these Elastase Trypsin Chymotrypsin all of these ANSWER DOWNLOAD EXAMIANS APP
Enzymes Which of the following statements about enzymes or their function is true? Enzymes speed up reactions by lowering activation energy Enzymes are proteins whose three-dimensional form is key to their function Enzymes do not alter the overall change in free energy for a reaction All of these Enzymes speed up reactions by lowering activation energy Enzymes are proteins whose three-dimensional form is key to their function Enzymes do not alter the overall change in free energy for a reaction All of these ANSWER DOWNLOAD EXAMIANS APP
Enzymes Which of the common features are shared between serine and aspartate proteases? Both show specificity for certain amino acid sequences Both require water to complete the catalytic cycle All of these Both use a base to activate the nucleophile Both show specificity for certain amino acid sequences Both require water to complete the catalytic cycle All of these Both use a base to activate the nucleophile 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 58 kJ/mol 49 kJ/mol 88 kJ/mol 40 kJ/mol 58 kJ/mol 49 kJ/mol 88 kJ/mol ANSWER DOWNLOAD EXAMIANS APP
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