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Low potassium-type but not high potassium-type sheep red blood cells show passive K+ transport induced by low ionic
A Erdmann1, I Bernhardt, S J Pittman
1Department of Biophysics, Humboldt University, Berlin, G.D.R.
Biochimica Et Biophysica Acta
|January 9, 1991
Abstract:
Low potassium-type (LK) sheep red blood cells show a significant increase of the residual (i.e., ouabain-insensitive) K+ influx when the ionic strength of the solution is decreased. This effect is absent from high potassium-type (HK) sheep red blood cells. The KCl cotransport system is not involved since three different manoeuvres to suppress the KCl cotransport (replacement of Cl- by NO3-, volume-decrease, inhibition by anti-L1 antibodies) have no effect on the low ionic strength-stimulated K+ influx.