title: Energy coupling to K+ uptake via the Trk system in Escherichia coli: the role of ATP.
abstract: The dual energy requirement (protonmotive force and ATP) of the Escherichia coli Trk potassium transport system has been investigated. Using inhibitors and unc mutants we show that Trk is not an ATPase but may be regulated by ATP. Possible mechanisms of energy coupling to Trk are discussed.
mesh_terms: D000255:Adenosine Triphosphate / Q000378:metabolism*; D001149:Arsenates / Q000494:pharmacology; D001692:Biological Transport / Q000187:drug effects; D004734:Energy Metabolism; D004926:Escherichia coli / Q000378:metabolism*; D007461:Iodoacetates / Q000494:pharmacology; D019807:Iodoacetic Acid; D008756:Methylgalactosides / Q000378:metabolism; D011188:Potassium / Q000378:metabolism*; D013862:Thiogalactosides / Q000378:metabolism
chemical_list: D001149:Arsenates; D007461:Iodoacetates; D008756:Methylgalactosides; D013862:Thiogalactosides; C009468:thiomethylgalactoside; D000255:Adenosine Triphosphate; D011188:Potassium; D019807:Iodoacetic Acid