The Journal of General Physiology
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The Journal of General Physiology, Vol 24, 437-445, Copyright © 1941 by The Rockefeller University Press

ARTICLE

THE RATE OF BACTERIOPHAGE INACTIVATION BY FILTRATES OF ESCHERICHIA COLI CULTURES

Emory L. Ellis 1 and John Spizizen 1

1 From the William G. Kerckhoff Laboratories of the Biological Sciences, California Institute of Technology, Pasadena

1. The rate of inactivation of an anti-coli phage by filtrates of cultures of the homologous bacteria has been studied.

2. The inactivation rate at 37°C. is proportional to phage concentration and filtrate concentration.

3. At 0°C. the rate of phage inactivation becomes proportional to the square root of the filtrate concentration.

4. A reaction scheme to account for these observations is suggested and discussed.

5. This coli-phage is also inactivated by relatively large concentrations of soluble starch, inulin, gum arabic, and acetylated gum arabic.

6. The inactivation is markedly influenced by salt concentration, being rapid at moderate salt concentrations and slow at high or extremely low salt concentrations.

7. The inactivated phage cannot be regenerated by high salt concentrations, or by soaps.

 Submitted on October 18, 1940


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