Uptake of glucose and maltose by Bacillus popilliae

Abstract

Results of experiments with glucose and its analog, methyl α-D-glucopyranoside, indicated that when glucose was present at low concentrations, it was transported into B. popilliae NRRL B-2309MC cells as glucose 6-phosphate by a phosphoenolpyruvate sugar phosphotransferase system. An additional mode(s) of entry may be operative at higher glucose concentrations. Maltose appeared to enter the cells by a nonphosphorylative process and was hydrolyzed intracellularly to glucose. No phosphoryl donor was necessary for this hydrolysis.