Classes of Enzymes

Question 1

E.C. 1
name, and how to find it!

Answer 1

Oxidoreductases
-transfer electrons from one molecule to another molecule
(more H and/or less Os means reduced)
(can also look for participation of electron carriers, NADH/NAD+ etc)

Question 2

E.C. 2
name, and how to find it!

Answer 2

Transferase
-transfer functional groups from one molecule to another (ex OH-, PO4-, SH, CH3 (sometimes in the name)

Question 3

E.C. 3
name, and how to find it!

Answer 3

Hydrolases-
(hydrolyase not actual spelling, but helpful to remember) breaks covalent bond using water, water becomes incorporated into the molecule
SEE WATER THINK 3

Question 4

E.C. 4
name, and how to find it!

Answer 4

Lyase
-breaking covalent bonds without water as a substrate
A-B -> A + B (look for breaking of molecule into two parts sans use of water)

Question 5

E.C. 5
name, and how to find it!

Answer 5

Isomerase
-create isomers, transfer a functional group within a molecule
Ex. A-BOH-C -> A-B-COH (nothing coming in or out, just rearranging is isomerase’s work)
Even double bond trading
Or similar names (citrate to isocitrate)
5 ISOMERS, they can high five each other!

Question 6

E.C. 6
name, and how to find it!

Answer 6

Ligase
-covalently join two molecules together
A+B -> AB

6 lying gays join things together

Question 7

E.C. 7
name, and how to find it!

Answer 7

Translocase-
protein assisted movement of a molecule form one side of membrane to other where the facilitator exhibits high specificity for the molecule it transfers

7 moves stuff!