What process is inhibited by PKA synthesis?

Protein kinase A (PKA) plays a crucial role in various signaling pathways, especially those involving hormone action, such as the regulation of glycogen metabolism. When PKA is activated, it phosphorylates specific target proteins that lead to the breakdown of glycogen into glucose, particularly in response to hormones like glucagon and epinephrine.

In this context, PKA synthesis refers to the production and activation of protein kinase A, which enhances rather than inhibits glycogen breakdown. Therefore, if PKA activity is increased, the breakdown of glycogen would typically be promoted due to its role in signaling pathways that stimulate gluconeogenesis and glycogenolysis.

Inhibition of glycogen breakdown would involve mechanisms that counteract or regulate the activation of PKA, ensuring that glucose is stored rather than released. This is consistent with the understanding of carbohydrate metabolism where different hormonal and enzymatic controls ensure appropriate energy availability.

Understanding the role of PKA in these metabolic pathways highlights its significance in cellular functions and the mobilization of stored energy, emphasizing that its synthesis actually supports processes like glycogen breakdown rather than inhibiting them. Thus, the correct answer illustrates how PKA functions within cellular metabolism, particularly in relation to glycogen utilization.