ANP 1105 Chapter Notes - Chapter 5: Signal Transduction, Cell Membrane, Cytosol
30 Dec 2015
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Chapter 5: control of cells by chemical messengers. The cell receiving the signal must have a way to detect the signal"s presence. Once a cell detects a signal, a mechanism is required to transduce that signal into a biologically meaningful response. Signal transduction is initiated when the binding of a messenger to a receptor activates the receptor and it produces a cell response to that messenger. Receptors are proteins or glycoproteins located either in the cell"s plasma membrane or inside the cell (either in the cytosol or in the nucleus) The plasma membrane is the much more common location of these receptors because a very large number of messengers are water-soluble and cannot diffuse across plasma membrane.
