Osmotically induced excretion of putrescine by mutants of Escherichia coli defective in potassium transport.
Escherichia coli is known to excrete putrescine rapidly after a sudden elevation in the osmolarity of the medium. We report here that mutants defective in the transport of potassium ions display a greatly diminished rate of [(14)C]putrescine excretion.
D001693:Biological Transport, Active; D002250:Carbon Radioisotopes; D003470:Culture Media; D004926:Escherichia coli / Q000378:metabolism*; D009154:Mutation; D009994:Osmolar Concentration; D011188:Potassium / Q000378:metabolism*; D011700:Putrescine / Q000096:biosynthesis / Q000378:metabolism*
D002250:Carbon Radioisotopes; D003470:Culture Media; D011188:Potassium; D011700:Putrescine