Enzymes Which of the common features are shared between serine and aspartate proteases? Both show specificity for certain amino acid sequences All of these Both use a base to activate the nucleophile Both require water to complete the catalytic cycle Both show specificity for certain amino acid sequences All of these Both use a base to activate the nucleophile Both require water to complete the catalytic cycle ANSWER DOWNLOAD EXAMIANS APP
Enzymes Which of the following (s) is/are serine proteases? Elastase all of these Trypsin Chymotrypsin Elastase all of these Trypsin Chymotrypsin 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 40 kJ/mol 88 kJ/mol 58 kJ/mol 49 kJ/mol 40 kJ/mol 88 kJ/mol 58 kJ/mol ANSWER DOWNLOAD EXAMIANS APP
Enzymes Tryprotophan synthetase of E.coli, a typical bifunctional oligomeric enzyme consist of a protein A and one-subunit a two proteins designated A and B a protein designated A a protein designated B a protein A and one-subunit a two proteins designated A and B a protein designated A a protein designated B ANSWER DOWNLOAD EXAMIANS APP
Enzymes The role of Asp 102 and His 57 during trypsin catalysis is to function as a proton shuttle clamp the substrate into the active site neutralize the charge on the other's side chain keep the specificity pocket open function as a proton shuttle clamp the substrate into the active site neutralize the charge on the other's side chain keep the specificity pocket open ANSWER DOWNLOAD EXAMIANS APP
Enzymes Which of the following is false statement with regard to comparison between Serine and HIV proteases? 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 Both require water to complete the catalytic cycle Both show specificity for certain amino acid sequences ANSWER DOWNLOAD EXAMIANS APP
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