Erdmann A, Bernhardt I, Pittman S J, Ellory J C
Department of Biophysics, Humboldt University, Berlin, G.D.R.
Biochim Biophys Acta. 1991 Jan 9;1061(1):85-8. doi: 10.1016/0005-2736(91)90271-9.
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.
