Enzymes Tryprotophan synthetase of E.coli, a typical bifunctional oligomeric enzyme consist of 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 a protein A and one-subunit a ANSWER DOWNLOAD EXAMIANS APP
Enzymes The nucleophile in serine proteases is Serine both (a) and (b) Asparagine water Serine both (a) and (b) Asparagine water ANSWER DOWNLOAD EXAMIANS APP
Enzymes What is the specificity of the Clostripain protease? It cleave after Arg residues None of these It cleave after His residues It cleave after Lys residues It cleave after Arg residues None of these It cleave after His residues It cleave after Lys residues ANSWER DOWNLOAD EXAMIANS APP
Enzymes The role of Asp 102 and His 57 during trypsin catalysis is to keep the specificity pocket open neutralize the charge on the other's side chain clamp the substrate into the active site function as a proton shuttle keep the specificity pocket open neutralize the charge on the other's side chain clamp the substrate into the active site function as a proton shuttle 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 show specificity for certain amino acid sequences Both use a base to activate the nucleophile All of these Both require water to complete the catalytic cycle Both show specificity for certain amino acid sequences Both use a base to activate the nucleophile 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 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 Both forms an acyl-enzyme intermediate Both show specificity for certain amino acid sequences ANSWER DOWNLOAD EXAMIANS APP
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