scholarly journals Relation between Cyclopropane Fatty Acid Formation and Saturation of Phospholipid Species in Escherichia coli K-12

1973 ◽  
Vol 37 (11) ◽  
pp. 2647-2651 ◽  
Author(s):  
Makoto KITO ◽  
Masataka ISHINAGA ◽  
Shigeo AIBARA ◽  
Michie KATO ◽  
Tadao HATA
Keyword(s):  
Escherichia Coli ◽  
Fatty Acid ◽  
Acid Formation ◽  
Cyclopropane Fatty Acid ◽  
K 12 ◽  
Phospholipid Species

Relation between Cyclopropane Fatty Acid Formation and Saturation of Phospholipid Species inEscherichia coliK-12

1973 ◽  
Vol 37 (11) ◽  
pp. 2647-2651
Author(s):  
Makoto Kito ◽  
Masataka Ishinaga ◽  
Shigeo Aibara ◽  
Michie Kato ◽  
Tadao Hata
Keyword(s):  
Fatty Acid ◽  
Acid Formation ◽  
Cyclopropane Fatty Acid ◽  
Phospholipid Species

The effect of temperature and other growth conditions on the fatty acid composition of Escherichia coli

1981 ◽  
Vol 27 (8) ◽  
pp. 835-840 ◽  
Author(s):  
James T. McGarrity ◽  
John B. Armstrong
Keyword(s):  
Escherichia Coli ◽  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Exponential Growth ◽  
Growth Conditions ◽  
Cyclopropane Fatty Acid ◽  
Cyclopropane Fatty Acids ◽  
K 12

During exponential growth, strain AW405 of Escherichia coli K-12 did not regulate the fatty acid composition of its lipids in response either to temperature or to the addition of NaCl, KCl, or MgCl2 to the medium. Growth was severely restricted at temperatures below 21 °C. Differential scanning calorimetry (DSC) of the isolated lipids from a culture with a typical exponential-phase composition yielded a broad transition, extending from approximately 0 to 33 °C, with a midpoint at 19 °C.During late stages of growth, the fatty acid composition changed. The percentage of palmitic acid increased and cyclopropane fatty acids replaced some of the equivalent unsaturated fatty acids. The increase in palmitate seemed largely independent of growth conditions, whereas the increase in the cyclopropane fatty acids was stimulated by the addition of salts or sucrose. Cultures grown in the presence of sucrose also had higher cyclopropane fatty acid levels during exponential growth. DSC of lipids from a sucrose culture, in which the compositional changes were most pronounced, yielded a much narrower transition with a midpoint at 27 °C.

Competition betweencis, trans and Cyclopropane Fatty Acid Formation and its Impact on Membrane Fluidity

2007 ◽  
Vol 7 (1) ◽  
pp. 67-74 ◽  
Author(s):  
N. Loffhagen ◽  
C. Härtig ◽  
W. Geyer ◽  
M. Voyevoda ◽  
H. Harms
Keyword(s):  
Fatty Acid ◽  
Membrane Fluidity ◽  
Acid Formation ◽  
Cyclopropane Fatty Acid
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