TY - JOUR
T1 - Potassium transport in Escherichia coli
T2 - diverse systems with common control by osmotic forces
AU - Epstein, Wolfgang
AU - Laimins, Laimonis
PY - 1980/1
Y1 - 1980/1
N2 - Genetic analysis reveals two very different K+ transport systems in E. coli. The Kdp system has a high affinity for K+, is driven by ATP, and consists entirely of inner membrane proteins. The genetic expression of the Kdp system is regulated by the turgor pressure. In contrast, the TrkA system has a low affinity for K+, is genetically complex, and requires the protonmotive force in addition to ATP for energization. Transport activity of both systems is osmotically regulated; reduced turgor pressure stimulates K+ uptake.
AB - Genetic analysis reveals two very different K+ transport systems in E. coli. The Kdp system has a high affinity for K+, is driven by ATP, and consists entirely of inner membrane proteins. The genetic expression of the Kdp system is regulated by the turgor pressure. In contrast, the TrkA system has a low affinity for K+, is genetically complex, and requires the protonmotive force in addition to ATP for energization. Transport activity of both systems is osmotically regulated; reduced turgor pressure stimulates K+ uptake.
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U2 - 10.1016/S0968-0004(80)80072-7
DO - 10.1016/S0968-0004(80)80072-7
M3 - Review article
AN - SCOPUS:0018905661
SN - 0968-0004
VL - 5
SP - 21
EP - 23
JO - Trends in Biochemical Sciences
JF - Trends in Biochemical Sciences
IS - 1
ER -