In addition, this coenzyme Q is also used to actually pick up the electrons received by protein complex one and move those electrons onto protein complex three. So let's move on to protein complex two. Now, the entire function of protein complex two is to actually accept and extract those hiding electrons from the fadh two molecules which are synthesized in the citric acid cycle. So if we recall the citric acid cycle, there's a step in the citric acid cycle where we basically transform we oxidize succinate into fumerate. And in this process, we have an enzyme known as succinate dehydrogenase that essentially reduces the fad into fadh two. So, remember, fad is Flavin adenine dinucleotide, which is capable of actually receiving extracting those high energy electrons.