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Fatty Acid Composition of Escherichia coli as a Possible Controlling Factor of the Minimal Growth Temperature.
MedLine Citation:
PMID:  16562009     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
Shaw, Maxwell K. (University of California, Davis), and John L. Ingraham. Fatty acid composition of Escherichia coli as a possible controlling factor of the minimal growth temperature. J. Bacteriol. 90:141-146. 1965.-If Escherichia coli ML30 is shifted from 37 to 10 C during exponential growth in glucose minimal medium, a 4.5-hr lag results. During this lag, the proportion of unsaturated fatty acids increases in the cellular lipids. However, the adjustment of the fatty acid composition does not appear to be prerequisite to growth at 10 C. If shifts are made to 10 C into minimal medium containing glucose after starvation for glucose at 37 C for 0.5 and 16 hr, the lag periods at 10 C are 4.5 and 6 hr, respectively. Withholding glucose during the lag periods does not affect the duration of the lag periods, but no change in fatty acid composition occurs if glucose is not present. Supplementing the medium with glucose after the lag period permits immediate growth at 10 C; however, the fatty acid composition is still typical of cells grown at 37 C. It is concluded that the fatty acid composition of cells does not determine the minimal temperature of growth.
Authors:
M K Shaw; J L Ingraham
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of bacteriology     Volume:  90     ISSN:  0021-9193     ISO Abbreviation:  J. Bacteriol.     Publication Date:  1965 Jul 
Date Detail:
Created Date:  2006-05-26     Completed Date:  2006-05-26     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  2985120R     Medline TA:  J Bacteriol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  141-6     Citation Subset:  -    
Affiliation:
Department of Bacteriology, University of California, Davis, California.
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