[Potassium channels in saccular hair cells in the bullfrog].
By means of cell-attached and excised inside-out patch clamp techniques, we studied ion channels of the basolateral membrane of hair cells isolated from the bull-frog's sacculus. Three types of K+ channels were recorded, with conductances of 19-23PS, 46PS and 78PS respectively. The reversal potential was -56 +/- 20mV. The kinetics of the high- and low-conductance type K+ channels was different. The former was identified as KCa and the latter was suspected as KDR or KIR. They have important function in the sensory coding of hair cells.
Su
Z L
ZL
PLA General Hospital, Beijing.
D000818:Animals; D004594:Electrophysiology; D006198:Hair Cells, Auditory / Q000737:chemistry*; D015221:Potassium Channels / Q000145:classification / Q000502:physiology*; D011892:Rana catesbeiana; D012444:Saccule and Utricle / Q000166:cytology*
D015221:Potassium Channels