Ion channels are pore-forming proteins that help establish and control the voltage gradient across the plasma membrane of cells (see membrane potential) by allowing the flow of ions down their electrochemical gradient. They are present in the membranes that surround all biological cells. The study of ion channels involves many scientific techniques such as voltage clamp electrophysiology (in particular patch clamp), immunohistochemistry, and RT-PCR.
Famous quotes containing the word channel:
“Eddie did not die. He is no longer on Channel 4, and our sets are tuned to Channel 4; hes on Channel 7, but hes still broadcasting. Physical incarnation is highly overrated; it is one corner of universal possibility.”
—Marianne Williamson (b. 1953)