The Cellular Process in Which a Signal Is Conveyed to Trigger a Change in the Activity or State of a Cell. Signal Transduction Begins with Reception of a Signal (e.g. a Ligand Binding to a Receptor or Receptor Activation by a Stimulus Such As Light) or For Signal Transduction in the Absence of Ligand Signal Withdrawal or the Activity of a Constitutively Active Receptor. Signal Transduction Ends with Regulation of a Downstream Cellular Process E.g. Regulation of Transcription or Regulation of a Metabolic Process. Signal Transduction Covers Signaling From Receptors Located On the Surface of the Cell and Signaling Via Molecules Located Within the Cell. For Signaling Between Cells Signal Transduction Is Restricted to Events At and Within the Receiving Cell.
Termination of G Protein Coupled Receptor Signaling Pathway
The Signaling Process in Which G Protein Coupled Receptor Signaling Is Brought to an End. For Example Through the Action of Gtpase Activating Proteins (gaps) That Act to Accelerate Hydrolysis of GTP to GDP On G Alpha Proteins Thereby Terminating the Transduced Signal.
A Cytoplasmic Protein Complex Containing Glycogen Synthase Kinase 3 Beta (gsk 3 Beta) the Adenomatous Polyposis Coli Protein (apc) and the Scaffolding Protein Axin Among Others; Phosphorylates Beta Catenin Targets It For Degradation by the Proteasome.