How is ion selectivity in voltage-gated ion channels determined? By the action potential threshold By the synaptic input By the size and charge of the ions and the structure of the channel pore By the amount of neurotransmitter released
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Explain how the crystal structures of potassium ion channels suggest the way in which the voltage-sensing domains interact with other parts of the proteins to open and close the ion channels. How does this structure-function relationship apply to other voltage-gated ion channels?
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