title: Streptomycin resistance (rpsL) produces an absolute requirement for polyamines for growth of an Escherichia coli strain unable to synthesize putrescine and spermidine [delta(speA-speB) delta specC].
abstract: The presence of certain rpsL (strA) mutations in a strain of Escherichia coli that cannot synthesize putrescine or spermidine because of deletions in ornithine decarboxylase, arginine decarboxylase, and agmatine ureohydrolase, converts a partial requirement for polyamines for growth into an absolute requirement.
mesh_terms: D004352:Drug Resistance, Microbial; D004926:Escherichia coli / Q000187:drug effects / Q000235:genetics / Q000378:metabolism*; D029968:Escherichia coli Proteins; D009154:Mutation; D011700:Putrescine / Q000378:metabolism*; D000091243:Ribosomal Protein S9; D013095:Spermidine / Q000378:metabolism*; D013307:Streptomycin / Q000494:pharmacology*; D013489:Suppression, Genetic
chemical_list: D029968:Escherichia coli Proteins; D000091243:Ribosomal Protein S9; C000717190:RpsI protein, E coli; D013095:Spermidine; D011700:Putrescine; D013307:Streptomycin