title: Location of the gene for the low-affinity tryptophan-specific permease of Escherichia coli.
abstract: L-Tryptophan uptake was assayed under conditions in which the aroT gene had been inactivated by deletion and the product of the aroP permease was competitively inhibition. A mutant carrying a deletion from bgl through tnaA showed negligible L-tryptophan uptake, in contrast to a strain possessing an intact tna region or to strains carrying point mutations in tna. The ability to take up L-tryptophan was not restored by lysogenizing the tna-deleted strain with lambda tna+.
mesh_terms: D026905:Amino Acid Transport Systems; D004926:Escherichia coli / Q000201:enzymology* / Q000235:genetics; D029968:Escherichia coli Proteins; D005798:Genes, Bacterial; D008242:Lysogeny; D026901:Membrane Transport Proteins / Q000235:genetics*; D009154:Mutation; D029701:Saccharomyces cerevisiae Proteins; D014364:Tryptophan / Q000378:metabolism
chemical_list: D026905:Amino Acid Transport Systems; D029968:Escherichia coli Proteins; D026901:Membrane Transport Proteins; D029701:Saccharomyces cerevisiae Proteins; C429825:TAT2 protein, S cerevisiae; C035131:TnaB protein, E coli; D014364:Tryptophan