Open AccessOsmoregulation by potassium transport in Escherichia coli
Author(s) -
Epstein Wolfgang
Publication year - 1986
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1986.tb01845.x
Subject(s) - betaine , turgor pressure , osmotic concentration , efflux , escherichia coli , osmoregulation , potassium , osmotic pressure , biochemistry , chemistry , biophysics , biology , ecology , organic chemistry , salinity , gene
Cell turgor pressure determines the extent of K + accumulation by Escherichia coli cells. K + influx is mediated both by a constitutive system with a low affinity for K + (Trk) and by an inducible high affinity system (Kdp). K + efflux is controlled by as yet unidentified but independent systems. Cell K + concentration may be the link between growth in media of high osmolarity and the concomitant accumulation of compatible solutes such as betaine.