Intracellular Signaling / Second Messenger System

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Video Summary:
The second messenger system conveys signals from the receptor to the target proteins. It occurs by series of activation or inactivation of different second messenger molecules. Some examples of second messenger molecules are cAMP, IP3, DAG, cGMP, etc. Target protein can be transport proteins, metabolic enzymes, gene regulatory proteins, cytoskeletal proteins, or cell cycle proteins. These target proteins initiate the ultimate response by the cell. The signals are amplified as they travel deeper. Apart from this, the second messenger system integrates signals. Different ligand-receptor combinations may activate the same intracellular signaling pathway and thereby affect the same response. And the same ligand may activate a different intracellular signaling pathway in different cells and produce a different response.

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DISCLAIMER: This video is for education purposes only. Although every effort is made to ensure the accuracy of the material, viewers should refer to the appropriate regulatory body/authorized websites, guidelines, and other suitable sources of information as deemed relevant and applicable. In view of the possibility of human error or changes in medical science, any person or organization involved in the preparation of this work accepts no responsibility for any errors or omissions, or results obtained from the use of information in this video.