Water-Filled Pores of Ion Channels

The water-filled pore of an ion channel is important in transporting ions across the cell membrane. But how does this water-filled pore work?¬†Well, we know that ions attract water because water is bipolar: it has an unequal distribution of charges. The oxygen atoms tend to attract electrons, so it has a slightly negative charge, while … Continue reading Water-Filled Pores of Ion Channels

Ion Channels and Ion Pumps

Signaling in the brain depends on the rapid response of neurons to changes in stimuli. These rapid responses are due to the presence of ion channels in the nerve cell membrane. Each ion channel is primed to respond to specific stimuli, either chemical or physical. They also have the property of heterogeneity: there are different … Continue reading Ion Channels and Ion Pumps