👉 Phosphagen is a type of protein that plays an important role in cellular respiration. It consists of two subunits, phosphoglycerate kinase and phosphoglycerolate synthase, which catalyze the conversion of pyruvate to acetyl coenzyme A (CoA) through a series of reactions known as glycolysis. The term "phosgenic" refers to something that is capable of generating energy from phosphates in the presence of oxygen, such as glucose