Underlying every thought, heartbeat and movement are ion channels, busily conducting high-speed streams of ions into cells, like subway trains coursing through tunnels. Ion channels span the cellular ...

Do only potassium ions pass through the selectivity filter of a potassium channel, or are there water molecules between the ions? This question has been a source of controversy for years. Researchers ...

Summary: For over a century, potassium ions were viewed as mere passengers in the brain—particles that flow through channels to generate electrical signals. However, a new discovery revealed that ...