Fatty acid composition of lipids of Escherichia coli W 1655 F+ and its stable protoplast type L-form
Fatty acid composition of lipids of Escherichia coli W 1655 F+ and its stable protoplast type L-form
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Date
1982
Authors
Gumpert, J.
Schade, W.
Krebs, D.
Baykousheva, S.
Ivanova, E.
Toshkov, A.
Advisor
Citation
Gumbert, J., W. Schade, D. Krebs, S. Baykousheva, E. Ivanova, and A. Toshkov. 1982. Fatty acid composition of lipids of Escherichia coli W 1655 F+ and its stable protoplast type L-form. Z. Allg. Mikrobiol. 22 (3):169-73.
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Abstract
The comparative fatty acid analysis of extractable and non-extractable lipids of Escherichia coli W 1655 F+ and its stable protoplast type L-form shows quantitative as well as qualitative differences. From 10 different fatty acids obtained, 16:0, 17:0 and 18:0 were present at about the same quantities in the lipid fractions of the bacterial and L-form. The absence of larger amounts of 12:0, 14:0, and 14:beta-hydroxy fatty acids in the non-extractable L-form lipids reflects the loss of the cell wall in L-form cells. The 16:1 fatty acid was found in L-form lipids, only. This qualitative difference and the 2-3 times higher content of 18:1 in L-form lipids and the 7 times lower content of cyc-19:0 in extractable lipids of the L-form may be interpreted as alterations characteristic of the changed composition of the cytoplasmic membrane in the L-form cells.