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Signaling transduction

Signal transduction, also known as cell signaling, is the transmission of molecular signals from a cell's exterior to its interior. Signal transduction is responsible for many processes such as cell growth, proliferation, healing, differentiation, metabolism and communication. Signal transduction pathways is the process by which a physical or chemical signal is transmitted through a cell as a series of molecular events, most commonly protein phosphorylation catalyzed by protein kinases, which ultimately results in a cellular response. The intracellular signaling transduction is highly receptor specific, thereby maintaining the specificity of the incoming signal inside the cell. Signal transduction pathways amplify the incoming signal by a signaling cascade using a network of enzymes that act on one another in specific ways to ultimately generate a precise and appropriate physiological response by the cell.


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