Potassium currents from isolated frog lens epithelial cells.
Using the perforated patch version of whole-cell recording, we have measured currents from isolated frog lens epithelial cells. Three types of currents were seen. A time-independent outwardly rectifying potassium current was identified that sets the resting voltage. This potassium current differs significantly from any of the potassium currents recorded with the whole-cell technique in mammalian lens epithelial cells. In addition to the potassium current, the two other currents present were both outwardly rectifying: one was time-independent while the other showed distinct activation.
Cooper
K
K
Department of Zoology, Arizona State University, Tempe 85287-1501.
Watsky
M
M
Rae
J
J
D000818:Animals; D001464:Barium / Q000494:pharmacology; D004848:Epithelium; D017136:Ion Transport / Q000502:physiology; D007908:Lens, Crystalline / Q000378:metabolism*; D008564:Membrane Potentials / Q000502:physiology; D011188:Potassium / Q000378:metabolism*; D015221:Potassium Channels / Q000187:drug effects / Q000378:metabolism; D011894:Rana pipiens; D019789:Tetraethylammonium; D013757:Tetraethylammonium Compounds / Q000494:pharmacology
D015221:Potassium Channels; D013757:Tetraethylammonium Compounds; D001464:Barium; D019789:Tetraethylammonium; D011188:Potassium