Bifunctional coenzyme A synthase (Coasy)

Bifunctional enzyme which catalyzes the fourth and fifth sequential measures of CoA biosynthetic pathway. The fourth reaction is catalyzed by the phosphopantetheine adenylyltransferase, coded by the coaD domain; the fifth reaction is catalyzed by the dephospho-CoA kinase, coded by the coaE domain.

May act as a point of CoA biosynthesis regulation. .