Here we're going to say the name of the enzyme can be predicted by knowing the substrate and the type of reaction. Here, our reaction types are transfer, condensation, cleavage, and hydrolysis. And, our memory tool 2 here will be "train, conductor cleans house." So "train conductor cleans house." Here are hints corresponding to the different reactions. So hint 1 is reaction 1. This will be reaction 2, 3, and 4. For reaction 1, which relates to hint 1, we have transfer and it's catalyzed by ornithine transcarbamylase, which is OTC. OTC. Hint 2, we have condensation. It's catalyzed by our synthetase. Cleavage we're cleaning. This is catalyzed by our lyase. And then for reaction 4, hint 4, hydrolysis is catalyzed by our Arginase. Again, use this in conjunction with your memory tools.
For example, hint 4, which is reaction 4, we're talking about our arginine becoming our ornithine being recreated as well as urea. So because it's arginine, we know that arginase has to be the enzyme that's being used. So again, use this memory tool in conjunction with memory tool 1 to help guide you to the different types of metabolites involved and thereby understanding the enzymes needed.
