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Cation Transport in Escherichia Coli. VI. K Exchange

Overview
Journal J Gen Physiol
Specialty Physiology
Date 1966 Jan 1
PMID 5328217
Citations 26
Authors
W Epstein
S G Schultz
Affiliations
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Abstract

K influx and net K flux have been measured in suspensions of chloramphenicol-arrested Escherichia coli. The rate of K exchange in the steady state was independent of the K concentration of the medium over a 200-fold range. Under a number of experimental conditions the rate of exchange may be considerably increased or decreased without changing the cellular K content. These results show that under these conditions changes in K influx are associated with equal changes in K efflux, and suggest that the latter process is, at least in part, both carrier-mediated and tightly coupled to the influx process.

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