Insulin and glucagon are hormones, not enzymes, but one promotes production of glycogen, which is how we store glucose in our cells, while the other promotes the release of glucose from the stored glycogen. In this reaction, is insulin catalyzing the catabolic or the anabolic reaction? glucose (insulin) (glucagon) glycogen Insulin and glucagon are hormones, not enzymes, but one promotes production of glycogen, which is how we store glucose in our cells, while the other promotes the release of glucose from the stored glycogen. In this reaction, is insulin catalyzing the catabolic or the anabolic reaction? catabolic anabolic