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J Bacteriol. 1965 January; 89(1): 106-112
Copyright © 1965 American Society for Microbiology. All Rights Reserved.

Cyanide Formation by Chromobacterium violaceum

^a Department of Botany, Columbia University, New York, New York

ABSTRACT

MICHAELS, RUTH (Columbia University, New York, N.Y.), AND W. A. CORPE. Cyanide formation by Chromobacterium violaceum. J. Bacteriol. 89:106–112. 1965.—The formation of cyanide by a Chromobacterium violaceum strain was studied with growing cultures and with nonproliferating cells grown in complex and chemically defined media. Most of the cyanide was produced during the log-phase growth of the organism, and accumulated in the culture supernatant fluid. A synergistic effect of glycine and methionine on cyanide formation in a chemically defined medium was observed, and the amount of cyanide formed was found to be dependent on the concentrations of the two substances. Cyanide formation by nonproliferating cells was stimulated by preincubation with glycine and methionine. Cyanide formation by adapted cells in the presence of glycine and methionine was stimulated by succinate, malate, or fumarate, and depressed by azide and 2,4-dinitrophenol. Methionine could be replaced by betaine, dimethylglycine, and choline.

¹ Present address: Department of Chemistry, Wayne State University, Detroit, Mich.