There are no water molecules between the ions in the selectivity filter of potassium

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 have now been able to show that water molecules do not co-migrate through the potassium channel.

from Top Technology News -- ScienceDaily https://ift.tt/33kNLnL