Well, because the succinct coenzyme A is an intermediate of the citric acid cycle. So we basically form the succinct coenzyme A, place it into the citric acid cycle, and that helps us generate ATP molecules that the cell can use for energy. So what exactly is this three step process? This is what I'd like to focus on in this lecture. And let's begin with step number one. In step number one, we basically want to transform this three carbon molecule, the proponental coenzyme A, into a four carbon molecule known as demethylmel coenzyme A.