[Carbohydrate transport systems in Escherichia coli and regulation of catabolism]

The mechanism of carbohydrate uptake in E. coli with involvement of the phosphoenol pyruvate-dependent phosphotransferase system (PTS) is dealt with. The genetic structure of the glucose transport system and fructose operon is given in detail. How the products of these systems can affect the total bacterial cellular catabolism dependent of complex of cyclic 3'5'-monophosphate + protein regulator of the above nucleotide is shown. Some section is devoted to the bacterial transport of beta-glycosides with the participation of Po-independent terminator and to the role of PTS as a highly sensitive sensory system associated with carbohydrate catabolism.