the transport process obeyed hyperbolic kinetics , with a high affinity ( apparent km = 17 +/- 11 ( sem ) nm ) and low turnover number ( maximum velocity = 22.3 +/- 5.4 ( sem ) pmol h-1 mg dry wt-1 of cells or flux rate of 3.1 nmol h-1 m-2 of plasma membrane surface area ) .
C0007634
cells
C0007603
plasma membrane