Ion Channels
Summary :
Table of Contents
- Introduction
- The relation between primary protein structure and ion channel function
- Toxins isolated from the buttercup family
- Potassium (K+) channels
- Delayed rectifier channels
- M channels
- KATP channels
- Calcium (Ca2+) channels
- Chloride (Cl?) channels
- Conclusion
- References
Abstract
Structure and Function of Voltage-Gated ion channels Voltage-gated ion channels allow the flow of ions in response to changes in membrane voltage and are key elements in neuronal excitation and inhibition. Although ion channels can usually pass more than a single type of ion, voltage-gated channels are named according to the predominant ion that flows when the channel is open. ion channels that are selective for Na+, K+, Ca2+, or Cl- have been described in neuronal membranes. Certain ion channels that are gated directly by chemical neurotransmitters such as glutamate and acetylcholine are selective for Na+, K+, and Ca2+ but exclude Cl- and are called nonselective cationic channels.
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