Monounsaturated Fatty Acids Are Substrates for Aldehyde Generation in Tellurite-Exposed Escherichia coli

Table 1

Fatty acid ratio in E. coli carrying pBAD, pfabA, or pcfA plasmids.

Strain/plasmid	Fatty acid ratio (%)
BW25113 ΔyqhD	C16 : 1	C16	C17	C18 : 1	C19	C16 : 1 + C18 : 1
pBAD	18.2±0.5	35.3±0.5	10±0.8	36.9±0.9	0	55.2±0.5
pfabA	16.6±1.0	59.4±1.0	7.4±1.4	16.5±0.7	0	33.1±0.4
pcfa	1.7±0.5	27.7±0.7	29.3±1.1	3.6±0.6	37.7±0.8	5.3±1.0

Total fatty acids from the indicated E. coli strains were subjected to direct transesterification and analyzed by gas chromatography. Results are expressed as the percentage of total fatty acids. C16 :  1, palmitoleic acid; C16, palmitic acid; C17: margaric acid; C18 : 1, vaccenic acid; C16 : 1 + C18 : 1, and variation of total MUFA content (C16 : 1 + C18 : 1); C19: nonadecylic acid.