ENZYMES QUIZ

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

88 kJ/mol

58 kJ/mol

40 kJ/mol

49 kJ/mol

A will still be produced, but not B, C, or D

A, B, and C will still be produced, but not D

A, B, C, and D will all still be produced

A and B will still be produced, but not C or D

keep the specificity pocket open

clamp the substrate into the active site

function as a proton shuttle

neutralize the charge on the other's side chain

absence of water in the active site

proximity of Ser 195 to the active site or specificity pocket

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

single reactive serine residue

hydrophobic specificity pocket

hydrophilic specificity pocket

cluster of reactive serine residues

changing the reaction from a biosynthetic to a catabolic pathway

the input of a small amount of activation energy

changing the three-dimensional shape of the molecule

oxidizing the molecules by removing electrons

two proteins designated A and B

a protein A and one-subunit a

a protein designated A

a protein designated B

It cleave after Lys residues

None of these

It cleave after Arg residues

It cleave after His residues

Asparagine

Serine

both (a) and (b)

water