WORLD GEOGRAPHY QUIZ

Asparagine

Serine

both (a) and (b)

water

None of these

It cleave after Arg residues

It cleave after His residues

It cleave after Lys 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

hydrophilic specificity pocket

hydrophobic specificity pocket

cluster of reactive serine residues

single reactive serine residue

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

absence of water in the active site

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

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

clamp the substrate into the active site

keep the specificity pocket open

function as a proton shuttle

neutralize the charge on the other's side chain

all of these

Elastase

Chymotrypsin

Trypsin

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 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