Mathematical modelling of the transport of low molecular weight solutes across biological membranes. The transport of Leu, His and Glu into human blood platelets.

A model describing the transport of low molecular weight solutes across cell membranes is presented. The model accounts for many different systems which may mediate the fluxes of various solutes, for the effect of Na+ ions, and for time dependence of the processes. It generalizes the classical three-parameter equation for transport. Solutions to the model were employed to interprete experimental data obtained for the uptake of DL-leu, L-his and L-glu by human blood platelets.