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Ion channels

Ion channels are transmembrane pores which allow the passage of ions (charged particles) into and out of a cell down the electrochemical gradient. There are hundreds of different ion channels and they are distinguished based upon their ion selectivity, gating mechanism, and sequence similarity. Ion channels can be voltage-gated, ligand-gated, pH-gated, or mechanically gated. These gating criteria along with a combination of sequence similarity and ion selectivity further subdivides ion channels into several subtypes

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Channels: Scientific Animations Cell Biology

Tags: Ion channel,transmembrane pores

Uploaded by: ( Send Message ) on 09-11-2010.

Duration: 0m 53s