ON THE ACTIVE TRANSPORT OF SUCROSE AND OF 3-KETO-SUCROSE IN AGROBACTERIUM TUMEFACIENS

Abstract

The active transport of sucrose and of 3-ketosucrose into resting cells of Agrobacterium tumefaciens was established. Evidence is presented to show that these two transport systems behave differently. Their dependence on temperature, the effects of inhibitors, and the effects of stationary incubation vs. agitation are among the parameters studied. Inorganic ions had no effect on the active transport of sucrose-C14. Estimates of the degree of intracellular accumulation of sucrose-C14were made.