Ion channel

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Ion channels are hydrophilic pores in a plasma membrane. They are gated which means they are only open when stimulated, for example by voltage. The channels are also selective, allowing only some ions to pass; for example sodium or potassium[1][2]. Ion channels can be classed into three main families: voltage gated ion channels, ligand gated ion channels and mechanically gated ion channles[3].

References

  1. Alberts,Molecular Biology of the cell 5th edition,2008,page 668
  2. Alberts,Molecular Biology of the cell 5th edition,2008,page 668
  3. Lyons. I (2011). Biomedical Science Lecture Notes. Oxford: Wiley-Blackwell. 82.
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