ENZYMES QUIZ

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

changing the three-dimensional shape of the molecule

oxidizing the molecules by removing electrons

changing the reaction from a biosynthetic to a catabolic pathway

the input of a small amount of activation energy

water

both (a) and (b)

Serine

Asparagine

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

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

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

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

decatalyze the oxidation of pyruvic acid to acetyl Co A and CO2

Catalyze the oxidation of pyruvic acid to acetyl Co A and CO2

Catalyze the reduction of pyruvic acid to acetyl Co A and CO2

retard the reduction of pyruvic acid to acetyl Co A and CO2

Both show specificity for certain amino acid sequences

Both forms an acyl-enzyme intermediate

Both use nucleophilic attack to hydrolyze the peptide bond

Both require water to complete the catalytic cycle

It cleave after Lys residues

It cleave after His residues

None of these

It cleave after Arg residues

Elastase

Chymotrypsin

Trypsin

all of these

All of these

concentrating enzymes within specific cellular compartments

fixing enzymes into membranes so that they are adjacent to each other

grouping enzymes into free-floating, multienzyme complexes

size, shape, and charge of the active site or specificity pocket

absence of water in the active site

proximity of Ser 195 to the active site or specificity pocket

presence of a low-barrier hydrogen bond in the active site or specificity pocket