@article{mbs:/content/journal/micro/10.1099/00221287-117-2-369, author = "Jones-Mortimer, M. C. and Kornberg, H. L.", title = "Amino-sugar Transport Systems of Escherichia coli K12", journal= "Microbiology", year = "1980", volume = "117", number = "2", pages = "369-376", doi = "https://doi.org/10.1099/00221287-117-2-369", url = "https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-117-2-369", publisher = "Microbiology Society", issn = "1465-2080", type = "Journal Article", abstract = "Glucosamine, mannose and 2-deoxyglucose enter Escherichia coli by the phosphotransferase system coded for by the gene ptsM. The glucosamine- and mannose-negative, deoxyglucose-resistant phenotype of ptsM mutants can be suppressed by a mutation mapping near ptsG that allows constitutive expression of the glucose phosphotransferase coded for by the gene ptsG. N-Acetylglucosamine enters E. coli by two distinct phosphotransferase systems ( White, 1970 ). One of these is the PtsM system, the other is coded for by a gene which maps near the nag A, B genes at about min 15 on the E. coli chromosome. We propose that this gene be designated ptsN. Strains with either of these components of the phosphotransferase system will utilize N-acetylglucosamine as sole carbon source.", }