INFLUENCE OF X-IRRADIATION ON POTASSIUM RETENTIVITY BY ESCHERICHIA COLI

Journal Article · Fri Aug 01 00:00:00 EDT 1958 · Proc. Soc. Exptl. Biol. Med.

DOI:https://doi.org/10.3181/00379727-98-24169· OSTI ID:4290822

Harrison, Jr, A P; Bruce, A K; Stapleton, G E

Potassium efflux from stationary-phase cells of Escherichia coli takes place readily in the presence of ammonium ions. Hence, through the use of ammonium phosphate buffer, K/sup +/ efflux was studied at a set value of pH. Sodium ions, on the other hand, retard K/sup +/ efflux, a finding that has been used to advantage when sodium phosphate is uscd as buffer in delaying efflux measurement. Potassium efflux from E. coli incrsases as a result of x irradiation. Amount of x-ray damage to K/sup +/ retention mechanism varies inversely with cell concentration during irradiation. E. coli strain B is much more susceptible to this radiation damage than is its mutant B/r. (auth)

• Research Organization: Oak Ridge National Lab., Tenn.
• Sponsoring Organization: USDOE
• NSA Number: NSA-12-016892
• OSTI ID: 4290822
• Journal Information: Proc. Soc. Exptl. Biol. Med., Journal Name: Proc. Soc. Exptl. Biol. Med. Vol. Vol: 98
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BIOLOGY AND MEDICINE