So in this video, let's do a rundown of our 6 classes of enzymes. Alright. So here we have our enzyme classes, we have our reaction that's catalyzed, and then we have the description involved. So let's go down this list. For the first one, O, oxidoreductases. Here we have molecule A and molecule B. If we look on the other side, we can see that there are changes that have occurred. We can see that A has lost its 2 electrons and handed them over here to BH3. So we have the transferring of electrons from A to B. A has lost its electrons, so here we'd say that A is being oxidized, B has gained those electrons, so we'd say that it is being reduced. So we're looking at a redox reaction here. Here we're gonna say the description is, redox reaction via transfer of electrons.
Next, we have T, transferases. Molecule A has this group here that's extending from it. And then if we look, that group has transferred from A to B. Now on the product side, B has that extending group. So here, this deals with the transfer of functional groups.
Next, we're gonna have H, hydrolases or hydrolase. Here we have A + B being connected together by this bond and we have water. Water is gonna be used to cut or cleave that bond. In the process, A got hydrogen and B got OH. Water has been added to break that bond. So here, the description is we break bonds by adding water.
Next, we have I, isomerases. A here, on that molecule, OH is on the right side of it. And then what's happened, it has been shifted over to the other side. Now, we just have to assume that A is not a symmetrical molecule, and there are differences from the right side and the left side, so that when OH transfers to the other side, it creates a brand-new structure. So here we're gonna have the rearrangement of atoms within a molecule to create isomers. Remember, isomers have the same formula, but here they're gonna have different connections.
Next, we have Lyases or lyases. So we have A and B connected. Here, that is severed and now we have A and B separate. Here we're gonna say the description is it breaks or forms bonds without redox reactions or water.
And then finally, we have Ligase or ligases, A + B require ATP in order to form a bond with each other on the product side. So here we use energy to covalently join molecules together. Alright. So this gives us a good rundown or summary of our 6 classes of enzymes.
