Osmoregulation by potassium transport inEscherichia coli

作者：Wolfgang Epstein · 发表于：FEMS Microbiology Letters · 年份：1986 · DOI：10.1111/j.1574-6968.1986.tb01845.x · 被引用次数：330 · 研究领域：Bacterial Genetics and Biotechnology、Chemical Reaction Mechanisms、Ion Transport and Channel Regulation

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.