Enzymes

Good morning,

So I know that most of you must be familiar with the word enzyme. Today in biochemistry class, the lecturer related the enzyme mechanisms with an interesting topic, love (or so-called). Basically, an enzyme is a catalyst and it speeds up the rate of reaction.

In high school, we've been taught that the enzyme is highly specific. It does not change shape. It only binds to its specific active site. The teachers were so insistent when I doubted it because you know it's a protein, and I thought a lot of chemicals have been made to alter any other chemicals. Turns out that today we learned about another mechanism which is called 'induced-fit model'. Apparently, the enzyme can slightly alter its active site to fit the substrate so that they can bind. So, the enzyme is not really that specific. But that's not what I really wanna discuss. All of you must have heard about lock-and-key model.

Now, there are two types of model; lock-and-key model & induced-fit model. The obvious difference between these two are its enzyme has specific active site whereas for the other one, the enzyme has the ability to suit itself to occupy the need of the substrate so that it can bind. For easier understanding, the relation for the lock-and-key model is that the boy would only accept the girl that is really specified to his taste. If he wants skinny girl, skinny it is. If he only adores blondie, blondie it is. If he likes bald girl, well, even one strand on her head won't do. He needs all criteria to be fulfilled, not even a single defect. Contrary to the other model, he is a little tolerable. If he wants a pretty girl, he would still accept an ordinary girl. He still has a criteria to be picked, but then he accepts the girl just the way she is.

The question is, which model are you?