There are many reasons why it's not as easy as the article lays it out: - Especially for drugs, if they interact with core mechanisms that are common to many e

There are many reasons why it's not as easy as the article lays it out: - Especially for drugs, if they interact with core mechanisms that are common to many eukaryotes, they might interact with the yeast itself, and possibly inhibit their growth too much - If you know a organism that produces your desired product, you first have to discover the pathway it uses to produce it. This includes discovering all of the proteins involved in the pathway, which isn't always straightforward. - If you can't construct a pathway from existing proteins, things will become a lot harder as you now also have to design a new protein to do the job. Our ability to do that is still quite limited (as it's somewhat blocked on protein folding prediction like many things in biotech).