Enzymes The proteolysis rate enhancement by chymotrypsin (~1010 folds) corresponds to a reduction in activation energy of about 40 kJ/mol 58 kJ/mol 88 kJ/mol 49 kJ/mol 40 kJ/mol 58 kJ/mol 88 kJ/mol 49 kJ/mol ANSWER DOWNLOAD EXAMIANS APP
Enzymes The role of Asp 102 and His 57 during trypsin catalysis is to 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 keep the specificity pocket open clamp the substrate into the active site neutralize the charge on the other's side chain ANSWER DOWNLOAD EXAMIANS APP
Enzymes The nucleophile in serine proteases is water Asparagine both (a) and (b) Serine water Asparagine both (a) and (b) Serine ANSWER DOWNLOAD EXAMIANS APP
Enzymes What is the specificity of the Clostripain protease? It cleave after Lys residues It cleave after His residues None of these It cleave after Arg residues It cleave after Lys residues It cleave after His residues None of these It cleave after Arg residues ANSWER DOWNLOAD EXAMIANS APP
Enzymes Tryprotophan synthetase of E.coli, a typical bifunctional oligomeric enzyme consist of a protein designated B a protein A and one-subunit a a protein designated A two proteins designated A and B a protein designated B a protein A and one-subunit a a protein designated A two proteins designated A and B ANSWER DOWNLOAD EXAMIANS APP
Enzymes Which of the following is false statement with regard to comparison between Serine and HIV proteases? Both forms an acyl-enzyme intermediate Both show specificity for certain amino acid sequences Both use nucleophilic attack to hydrolyze the peptide bond Both require water to complete the catalytic cycle Both forms an acyl-enzyme intermediate Both show specificity for certain amino acid sequences Both use nucleophilic attack to hydrolyze the peptide bond Both require water to complete the catalytic cycle ANSWER DOWNLOAD EXAMIANS APP
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