Nomenclature Of Enzymes - Dr. Bonleon

Question 1

Involved in oxidation and reduction.

Answer 1

Oxidoreductase

Question 2

Loss of electrons

Answer 2

Oxidation

Question 3

Gain of electrons

Answer 3

Reduction

Question 4

Use O2 as an e- acceptor but do not incorporate into the substrate.

Answer 4

Oxidases

Question 5

Use molecules other than O2 (e.g NAD+) as an e- acceptor.

Answer 5

Dehydrogenases

Question 6

Directly incorporate O2 into the substrate.

Answer 6

Oxygenases

Question 7

Use H2O2 as an e- acceptor.

Answer 7

Peroxidases

Question 8

Catalyze transfer of groups such as METHYL or GLYCOSYL groups from a donor molecule to an acceptor molecule.

Answer 8

Transferases

Question 9

Transfer functional or chemical groups (amino or phosphate groups)

Answer 9

Transferases

Question 10

Transfer 1-C units between substrates.

Answer 10

Methyltransferases

Question 11

Transfer NH2 from amino acids to ketoacids.

Answer 11

Aminotransferases

Question 12

Transfer PO3- from ATP to a substrate.

Answer 12

Kinases

Question 13

Transfer PO3- from Pi to a substrate.

Answer 13

Proteases

Question 14

Catalyze the hydrolytic cleavage of C-C, C-O, C-N, C-P or certain other bond, including acid anhydride bonds.

Answer 14

Hydrolases

Question 15

Transfer water.

Answer 15

Hydrolases

Question 16

Add or remove H2O from molecules.

Answer 16

Hydrolases

Question 17

Catalyze the hydrolysis of a substrate.

Answer 17

Hydrolases

Question 18

Remove PO3- from a substrate.

Answer 18

Phosphatases

Question 19

Cleave phosphodioester bonds such as those in nucleic acids.

Answer 19

Phosphodiesterases

Question 20

Cleave amide bonds such as those in proteins.

Answer 20

Proteases

Question 21

Catalyze the cleavage of C-C, C-O, C-N and other bonds by elimination, leaving double bonds and also add groups to double bonds.

Answer 21

Lyases

Question 22

Add or remove the elements of water, ammonia or CO2 to (or from) double bonds.

Answer 22

Lyases

Question 23

Manipulate double bonds by elimination reactions.

Answer 23

Lyases

Question 24

Produce CO2 via elimination reactions.

Answer 24

Decarboxylases

Question 25

Proupduce aldehydes via elimination reactions.

Answer 25

Aldolases

Question 26

Link 2 molecules without involvement of ATP

Answer 26

Synthases

Question 27

Catalyze geometric or structural changes within a single molecule.

Answer 27

Isomerases

Question 28

Catalyze rearrangement of atoms within a molecule.

Answer 28

Isomerases

Question 29

Interconvert L and D steroisomers

Answer 29

Racemases

Question 30

Transfer groups between atoms within a molecule.

Answer 30

Mutases

Question 31

Catalyze the joining together of 2 molecules, coupled to the hydrolysis of a pyrophosphoryl group in ATP or a similar nucleoside triphosphate.

Answer 31

Ligases

Question 32

Condense C - (S/N/C/O) bonds using energy from ATP.

Answer 32

Ligases

Question 33

Use CO2 as a substrate.

Answer 33

Carboxylases

Question 34

Link 2 molecules via an ATP-dependent reaction.

Answer 34

Synthetases