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Secondary messenger (calcium)

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

Several factors make calcium suitable for use as a secondary messenger:

  • its compartmentalised distribution within the cell
  • the concentration gradients which exist between storage compartments, the extracellular fluid and cytosol
  • a number of gated pathways by which calcium may flow down these concentration gradients
  • numerous proteins which calcium can bind to and so activate

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