The effect of sodium on the fermentation of glutamic acid by Peptococcusaerogenes

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Abstract

The anaerobe Peptococcusaerogenes degrades glutamic acid to carbon dioxide, acetic and butyric acids and ammonia (Whiteley 1957). Horler, Westlake and McConnell (1966a) have shown using specifically labelled glutamic acid-14C that carbon five is converted to carbon dioxide and that butyric acid can be formed from the first four carbons of glutamic acid without passing through two carbon units.

Washed cells of P.aerogenes, when suspended in a potassium phosphate buffer system at pH 7, readily fermented sodium glutamate; when glutamate was added as the free acid such preparations metabolized only about 10% of the added substrate. The addition of sodium ions, e.g. sodium sulphate, resulted in rapid and complete utilization of the glutamic acid. This paper describes the affect of sodium ions on the metabolism of glutamic and other amino acids by P.aerogenes.

References (4)

  • D.F. Horler et al.

    Can. J. Microbiol

    (1966)
  • D.F. Horler et al.

    Can. J. Microbiol

    (1966)
There are more references available in the full text version of this article.

Issued as NRC No.

2

Present address: Department of Microbiology, University of Alberta, Edmonton, Alberta.

3

National Research Council of Canada Postdoctorate Fellow, 1962–1964.

4

Present address: Division of Natural Sciences, University of Saskatchewan, Regina, Saskatchewan, Canada.

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