Computer simulation of the kinetics of the sodium pump.

A simple kinetic model for the membrane-bound enzyme, 'Na+, K(+)-ATPase', is presented. An equation for the efflux of Na+ and influx of K+ is derived. This also explains multiple ligand binding of homospecies of these cations and competition between heterospecies of these cations. The equation is computed by a small BASIC program and its validity is sought by comparing the results with a few experimental data.