Transient potassium currents in slow muscle fibers.
Transient changes in potassium conductance in chronically depolarized slow muscle fibers have been studied using a voltage clamp method. The transient behavior included current decays from initial to steady state for hyperpolarizing and depolarizing voltage clamp steps. A two-pulse voltage clamp sequence (conditioning step followed by test step) showed the initial potassium test current to depend sigmoidally on conditioning potential implicating the involvement of a membrane-bound charged group in regulating potassium current.
D000818:Animals; D001001:Anura; D008564:Membrane Potentials; D008839:Microelectrodes; D009132:Muscles / Q000378:metabolism* / Q000502:physiology; D011188:Potassium / Q000378:metabolism*; D011892:Rana catesbeiana
D011188:Potassium