Stages of Signalling

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  1. Receptor Activation
    a chemical signal binds to a cellular protein at the cell's surface
  2. Ligand
    • Signal Molecule
    • Small molecule that binds with specificity to a larger molecule (receptor)
  3. Signal Transduction
    binding leads to a change in the receptor that triggers a series of changes in a series of different molecules
  4. Relay Molecules
    Molecules in the signal transduction pathway
  5. Cellular Response
    The transduced signal triggers a specific cellular activity
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Stages of Signalling
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