Second Messenger Model. The greatest benefit of second messengers is speed and amplification. Binding of a ligand to a single receptor at the cell surface may end up causing massive changes in the biochemical activities within the cell.
18 2 How Hormones Work Concepts Of Biology 1st Canadian Edition from opentextbc.ca
But in addition to their job as relay molecules second messengers serve to greatly amplify the strength of the signal. Each of these hormones acts as a first messenger causing the cell to carry out the processes of glycogenolysis and or gluconeogenesis. There are certain key parts inside the second messenger systems.
Second messengers are intracellular signaling molecules released by the cell in response to exposure to extracellular signaling molecules the first messengers.
Learn vocabulary terms and more with flashcards games and other study tools. Second messenger model of hormone action. The camp the binds to a protein kinase enzyme this binding then activates the previously inactive protein kinase enzyme. The term second messenger was coined upon the discovery of these substances in order to distinguish them from hormones and other molecules that function outside the cell as first messengers in the transmission of biological information.
