title: Regulation of two forms of glutamine synthetase in Escherichia coli by the ammonia content of the growth medium.
mesh_terms: D000217:Acyltransferases; D000641:Ammonia / Q000494:pharmacology*; D003470:Culture Media; D004926:Escherichia coli; D005246:Feedback; D005973:Glutamine; D008025:Ligases / Q000037:antagonists & inhibitors / Q000096:biosynthesis*
chemical_list: D003470:Culture Media; D005973:Glutamine; D000641:Ammonia; D000217:Acyltransferases; D008025:Ligases