Activation of Sodium Channels (IMAGE)

Johns Hopkins Medicine

Activation of Sodium Channels

Caption

(1) Two activated sodium channels embedded in the cell membrane are bound to each other and to a calmodulin molecule (purple). (2) Sodium channels bound to each other and to calmodulin are poised for activation but have not yet been opened by voltage change. (3) A sodium channel not bound to another channel cannot be activated by a voltage change.

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© Anastasia Demson, 2014

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